Books Published

1. Encyclopedia of Mathematics, Supplement II, Kluwer Academic Publisher, a contribution "Orlicz- Lorentz space".

2. "Trends in Banach Spaces and Operator Theory", Contemporary Mathematics Book Series, AMS, 2003.

Refereed Journal Publications

1. A note on linear operations in Orlicz spaces, Funct. et Approx., 3 (1976),121-124.   

On linear operations in Orlicz spaces, ibidem, 4 (1976), 135-139.  

(with H.Hudzik), Some remarks on convergence in Orlicz spaces, Comment. Math., 21 (1979), 81-88.  

(with H.Hudzik), Equivalence of Orlicz and Luxemburg norm in generalized Orlicz spaces LM(T), Funct. et Approx., 9 (1980), 29-37.  

(with R.Pluciennik), Some theorems on compactness in generalized Orlicz spaces with application of - condition, ibidem, 10 (1980), 135-146.  

(with L.Drewnowski), Orlicz spaces of vector functions generated by a family of measures, Comment. Math., 22 (1981), 175-186.  

On comparison of Orlicz spaces and Orlicz classes, Funct. et Approx.,(1981),113-125.  

On some compactness criterion for Orlicz subspace E, Comment. Math., 22 (1981), 245-255.  

Rotundity of Orlicz-Musielak sequence spaces, Bull. Ac. Pol. Sci. Math., 29 No 3-4 (1981), 137-144.  

On uniform convexity of Orlicz spaces, Indag. Math., 44(1) (1982), 27-36.  

11. Flat Orlicz-Musielak sequence spaces, Bull. Ac.Pol. Sci. Math., 30, No 7-8 (1982), 347-352.   

Strict convexity of sequence Orlicz-Musielak spaces with Orlicz norm, Journal of Functional Analysis, 50,No 3 (1983), 285-305.  

The criteria for local uniform rotundity of Orlicz spaces, Studia Math., 79 (1984), 201-215.  

On some convexity properties of Musielak-Orlicz spaces, Sup. Rend. Circ. Mat. Palermo, Serie II, No 5 (1984), 63-72.  

Uniform rotundity in every direction of sequence Orlicz spaces, Bull. Ac. Pol. Sci. Math., 32, No 9-10 (1984), 589-594.  

On the translation in Orlicz-Musielak sequence spaces, Comment. Math., 24 (1984), 77-84.  

(with H.Hudzik), On uniformly convexifiable and B-convex Orlicz-Musielak spaces, ibidem, 25 (1985), 59-75.  

Some convexity properties of Musielak-Orlicz spaces of Bochner type, Sup. Rend. Circ. Mat. Palermo, Serie II, No 10 (1985), 63-73.  

Uniform rotundity of Musielak-Orlicz sequence spaces, J. Approx. Theory, 47, No 4 (1986), 302-322.  

(with W.Kurc), Weak uniform rotundity in Orlicz spaces, Comment. Math. Univ. Carol. Praque, 27 No 4 (1986), 651-664.  

21. (with H.Hudzik and J.Musielak), On some Banach algebras given by a modular, Colloq. Math. Soc. Janos Bolyai, Alfred Haar Memorial Conference, Budapest 1985,49, 445-463.   

(with B. Turett), Uniformly non-l1(n) Orlicz-Bochner spaces, Bull. Ac. Pol. Sci. Math., 35, No 3-4 (1987), 211-218.  

(with H.Hudzik and W.Kurc), Uniformly non-l(1)n Musielak-Orlicz spaces, Ibidem, 35, No 7-8 (1987), 441-448.  

(with H.Hudzik and J.Musielak), On the convexity coeficient of Orlicz spaces, Math. Zeit., 197 (1988), 291-295.  

(with B.Turett), Some remarks on moduli of rotundity in Banach spaces, Bull. Polish Acad. Sciences, 36 (1988), 219-223.  

(with B.Turett), Rotundity in Kothe spaces of vector valued functions, Canadian J. Math.,41 No 4 (1989), 659-675.  

with J.Musielak), On approximation by Riemann sums in generalized Orlicz spaces, Hokkaido Math. Journal., 18 No 2 (1989),223-229.  

(with J.Musielak), On convolution operator in Orlicz spaces, Revista Mathematica, 2 (1989), 157-178.  

(with C.Castaing), Kolmogorov and Riesz type criteria of compactness in Kothe spaces of vector valued functions, J. Math. Anal. Appl., 149 No 1 (1990), 96-113.  

Some remarks on Orlicz-Lorentz spaces, Math.Nachrichten, 147 (1990), 29-38.    

31. Extreme points in Orlicz-Lorentz spaces, Archiv der Mathematik, 55 (1990), 173-180.   

 (with B.Turett), Type and cotype in Musielak-Orlicz spaces, Geometry of Banach Spaces, Cambridge University Press;London Mathematical Society, Lecture Note Series 158, (1990), 165-180.  

Uniform convexity of generalized Lorentz spaces, Archiv der Mathematik, 56 (1991), 181-188.  

(with R.J.Fleming and J.E.Jamison), Isometries of Musielak-Orlicz spaces, Function Spaces, Proceedings of the Conference in Edwardsville, 1990; Marcel Dekker; Lecture Notes in Pure and Applied Mathematics, vol 136 (1992), 139-154.  

Type and cotype in vector-valued function spaces, Math. Japonica, 37, No. 4 (1992), 743-749.  

(with J.E.Jamison and Pei Kee Lin), Isometries of Musielak - Orlicz spaces II , Studia Mathematica, 104(1) (1993), 75-89.  

Isometries of Orlicz spaces equipped with the Orlicz norm, Rocky Mountain Journal of Mathematics, 24(4) (1994), 1475-1486.  

(with Shutao Chen and Henryk Hudzik) Support functionals and smooth points in Orlicz function spaces equipped with the Orlicz norm, Math Japonica, 30, No.2 (1994), 271-280.  

(with P.Greim and J.E.Jamison) Almost transitivity of some function spaces, Math.Proc.Camb.Phil.Soc., 116 (1994), 475-488.  

41. (with H.Hudzik) Monotonicity properties of Lorentz spaces, Proc. Amer. Math. Soc., 123(9) (1995), 2715-2721.   

(with P.K. Lin and H.Sun) Uniform normal structure of Orlicz-Lorentz spaces, Interaction Between Functional Analysis, Hamonic Analysis, and Probability - edited by N.Kalton, E.Saab and St. Montgomery-Smith, Marcel Dekker, (1996), 229-238.  

(with Lech Drewnowski and Pei Kee Lin) On multipliers and L -and M- projections in Banach lattices and Kothe function spaces, J.Math. Anal. Appl., 206 (1997), 83-102.  

(with H.Hudzik and M.Mastylo) Geometric properties of some Calderon-Lozanovskii spaces and Orlicz- Lorentz spaces, Houston J. Math., 22 (1996), 639-663.  

(with H.Hudzik and M.Mastylo) Local geometry of L_1 intersection with L _ infinity and L_1 + L_infinity, Archiv der Mathematik., 68 (1997), 159 - 168.  

On Musielak-Orlicz spaces isometric to L_2 or L_ infinity , Collectanea Mathematica , 48(1997), 563- 569.  

(with H.Hudzik and M.Mastylo) On geometric properties of Orlicz-Lorentz spaces, Canad. Math. Bull., 40(1997), 316-329.  

(with L.Maligranda and L.E. Persson) Convexity, concavity, type and cotype of Lorentz spaces I,  

51. (with L.Maligranda and L.E. Persson) Convexity, concavity, type and cotype of Lorentz spaces, Indag. Mathem., N.S., 9 (1998), 367-382.   

(with Cerda, H.Hudzik and M.Mastylo) Geometric properties of symmetric spaces with applications to Orlicz-Lorentz spaces, Positivity, 2(1998), 311-337.  

Convexity, concavity and indices in Musielak-Orlicz spaces, Functiones Math., 26 (1998), 67-84; special volume on the 70th birthday of J.Musielak.  

(with M.Mastylo) The Dunford-Pettis property for symmetric spaces, Canad. J. Math., 52(2000), 789- 803.  

 (with L.Maligranda and L.E. Persson) Indices and regularizations of measurable functions, Proceedings of the Conference on Banach Function Spaces held in Poznan in 1998, Lecture Notes in Pure and Applied Mathematics, Marcel Dekker, Inc; vol. 213, (2000), 231-246.  

(with H.Hudzik and M.Mastylo) Rotundity and monotonicity properties in Banach lattices, Rocky J.Math. 30(3), (2000), 933-950.  

(with H.Hudzik and M.Mastylo) On the dual of Orlicz-Lorentz space, PAMS 130, (2002), 1645--1654.  

(with M.Mastylo) The Schur and (weak) Dunford-Pettis properties in Banach lattices, J. Austral. Math. Soc. Ser. A. 73(2), (2002), 251—278.  

61. (with L.Maligranda and L.E.Persson) Indices, convexity and concavity of Calderon-Lozanovskii spaces, Math. Scandinavica 92, (2003), 141-160.   

(with L.Maligranda) Order convexity and concavity in Lorentz spaces with arbitrary weights, Studia Math. 160(3) (2004), 267-286.  

 (with L.Maligranda) On the Lorentz spaces Gamma_{p,w}$ , Israel J. Math. 140 (2004), 285--318.   

(with J.Jamison and Grzegorz Lewicki) One complemented subspaces of Musielak-Orlicz sequence spaces, J. Approx. Theory 140 (2004), no. 1, 1—37.  

(with G.Lewicki) Contractive and optimal sets in modular spaces, Math. Nachr. 268 (2004), 74--95.  

(with M.Cwikel, L.Maligranda and L.Pick) Are generalized Lorentz "spaces" really spaces?, Proc. Amer. Math. Soc. 132 (2004), no. 12, 3615—3625.  

(with Changsun Choi and Han Ju Lee) Complex convexity of Orlicz-Lorentz spaces and its applications, Bull. Pol. Acad. Sci. Math. 52 (2004), no. 1, 19--38.  

 (with M.Mastylo) Abstract duality Sawyer's formula and its application, Monatsh. Math., 151, (2007), 223--245.

(with Han Ju Lee) On uniqueness of extension of homogeneous polynomials, Houston J. of Math. 32 No.1 (2006), 227—252.

(with Han Ju Lee) $M$-ideal properties in Marcinkiewicz spaces, Comment. Math., special volume for 75th birthday of Julian Musielak, (2004), 123--144.  

71. (with N.Kalton) Type and order convexity of Marcinkiewicz and Lorentz spaces, Glasgow J. Math. 47 (2005), 123—137.     

(with Yves Raynaud) Isomorphic $ell^p$-subspaces in Orlicz-Lorentz sequence spaces,  Proceedings of the Americal Mathematical Society, 134, No.8 (2006), 2317—2327.

(with S. Barza, L.E. Persson and J. Soria) Mixed norm and multidimensional Lorentz spaces, Positivity,   10, No. 3 (2006), 539—554. 

(with C. Hao and N. Tomczak-Jaegermann) Orlicz spaces with convexity or concavity constant one, J. Math Anal. Appl.,   320, Issue 1, (2006), 303--321.

(with C. Lennard, M. Masty{l}o and S. Mikulska) The uniform Kadec-Klee property for Orlicz-Lorentz spaces, Math. Proc. Cambridge Philosophical Society, 143 (2007), 349--374. 

 (with Pei-Kee Lin) On the extensions of homogeneous polynomials, Proc. Ameri. Math. Soc., 135 (2007), 2471--2482.

 (with Han Ju Lee and G. Lewicki)  Extreme and smooth points in Lorentz and Marcinkiewicz spaces with applications  for contractive projections, Rocky Mountains Journal of Mathematics,  39, No. 5 (2009), 1533--572.

 (with Yves Raynaud), Copies of $ell_p$ and $c_0$ in general quasi-normed Orlicz-Lorentz sequence spaces, Contemporary Mathematics,  435 ( 2007), 207--227.

  (with Maria Acosta)  Weak neighborhoods of the unit ball in interpolation spaces $L^1 + L^infty$ and $L^1cap L^infty$, 800x600 Indiana Univ. Math. J., 57 (1) (2008), 77--96.

 (with Anca Parrish)  The $q$-concavity and $q$-convexity constants in Lorentz spaces, Banach Spaces and their  Applications in Analysis,  Proceedings of the International Conference at Miami University May 22-27, 2006, In Honor of Nigel Kalton's 60^th Birthday, Walter de Gruyter, Berlin, New York 2007, 357-373.

 81. (with Maria Acosta)  Norm attaining operators between  Marcinkiewicz and Lorentz spaces, 800x600 J. Lond. Math. Soc. 40(2008), no. 4, 581-592.

 (with Anca Parrish) Convexity and concavity constants in Lorentz and Marcinkiewicz spaces, 800x600 J. Math. Anal. Appl. 343 (2008) 337-351.

(with Shutao Chen, Xin He, H. Hudzik) Monotonicity and best approximation in Orlicz-Sobolev spaces with Luxemburg norm, J. Math. Anal. Appl. 344 (2008), No. 2, 687--698.

(with Yves Raynaud) Isomorphic copies in the lattice $E$ and its symmetrization $E^{(*)}$ with applications to Orlicz-Lorentz spaces, J. Functional Analysis 257 (2009), 271--331.

(with M. Ciesielski and R. Pluciennik) Gateaux derivatives in Lorentz spaces $Gamma_{p,w}$ and applications, Math. Nachr. 282, No. 9, (2009), 1242--1264.

(with Anca Parrish) Note on extreme points in Marcinkiewicz function spaces, Banach Journal of Mathematical Analysis, volume dedicated to Professor Lars-Erik Persson on his 65th birthday, 4, No. 1 (2010), 1--12.

(with Damian Kubiak) On isometric copies of $l_infty$ and James constants in Cesaro-Orlicz sequence spaces, J. Math. Anal. Appl. 372 (2010), 574--584.

(with M. Ciesielski) The best constant approximant operators in Lorentz spaces $Gamma_{p,w}$ and their applications, J. Approx. Theory 162 (2010), 1518--1544.

(with M. M. Czerwinska) Complex rotundities and midpoint local uniform rotundity in symmetric spaces of measurable operators, Studia Math. 201 (3) (2010), 253--285.

(with Anca Parrish) Smooth points in Marcinkiewicz function spaces, J. Convex Analysis, 18, No. 2  (2011), 379--390.

91. (with M. Ciesielski, P. Kolwicz and R. Pluciennik) Monotonicity and rotundity of Lorentz spaces $Gamma_{p,w}$, Nonlinear Analysis. Theory, Methods and Applications, 75 (2012), 2713--2723.

(with Damian Kubiak) On the dual of Cesaro function space, Nonlinear Analysis. Theory, Methods and Applications, 75 (2012), 2760--2773.

(with A.I. Popov, E. Spinu, A. Tcaciuc and V.G. Troitsky) Norm closed operator ideals in Lorentz sequence spaces, J. Math. Anal. Appl. 389 (2012), 247--260.

(with M. Acosta and M. Mastylo) The Daugavet property and weak neighborhoods in Banach lattices, J. Convex Analysis, 19, No. 3 (2012), 875--912.

(with M.M. Czerwinska and D. Kubiak) Smooth points in symmetric spaces of measurable operators, Positivity 16, No. 1 (2012), 29--51.

(with M.M. Czerwinska and D. Kubiak) Exposed points in symmetric spaces of measurable operators, Houston J. Math., 39(3) (2013), 823--852.

(with M. Ciesielski) Lebesgue's Differentiation Theorem in r.i. quasi-Banach spaces and Lorentz spaces $Gamma_{p,w}$, J. Funct. Spaces Appl. (2012), Art ID 682960, 28 pp.

(with Han Ju Lee) Banach-Saks properties of Musielak-Orlicz and Nakano sequence spaces, Proceedings of Amer. Math. Soc., 142 (2014) 547-558.

(with Yves Raynaud) New formulas for decreasing rearrangements and a class of Orlicz-Lorentz spaces, Rev. Mat. Complutense, 27(2014), No. 2, 587--621.

(with M. Acosta and M. Mastylo) The Daugavet property in rearrangement invariant spaces, Transactions of Amer. Math. Soc., 367 (2015) 4061-4078.

101.  (with Pei-Kee Lin) Banach envelops of p-Banach lattices, 0

(with Yves Raynaud and Karol Lesnik),  Dual spaces to Orlicz-Lorentz spaces, Studia Mathematica, 222 No. 3 (2014), 229--261.

(with Han Ju Lee)   Banach-Saks properties, lattice convexity and concavity, type and cotype in Orlicz-Lorentz spaces,  Abstract and Applied Analysis, Volume 2014, Article ID 423198, 8 pages, http://dx.doi.org/10.1155/2014/423198.

(with M. Mastylo) Asymptotically isometric and isometric copies of $ell_1$ in some Banach function lattices, Commentationes Mathematicae, Special Volume on 85^th birthday of Julian Musielak, 53, No. 2 (2013), 383-400.

(with M.M. Czerwinska),  k-extreme points in symmetric spaces of measurable operators, Integral Equations Operator Theory 82(2015), no.2, 189-222.

(with Damian Kubiak), The Daugavet property and diameters in Musielak-Orlicz spaces, J. Math. Anal. Appl. 427 (2015), no. 2, 873-898.

Comments on the paper: N.J. Kalton, Banach envelopes of non-locally convex spaces, Can.J. Math 38 (1986), 65 published in “Nigel J. Kalton Selecta, Volume I” by Birkhauser in the series Contemporary Math-ematicians, 114-119, 2016.

Comments on the paper: N.J. Kalton and A. Kaminska, Type and order convexity of Marcinkiewicz and Lorentz spaces and applications, Glasgow Math. J. 47 (2005) 123-137; published in “Nigel J. Kalton Selecta, Volume II” by Birkhauser in the series Contemporary Mathematicians, 2016.

(with D. Kubiak), Banach envelopes of some quasi-normed spaces, submitted to Commentationes Mathematicae, Special volume to honor 70th birthday of Henryk Hudzik, 56 (2016), no. 1, 87–101.

(with M. Czerwinska), Banach envelopes of noncommutative spaces of measurable operators, Positivity, 21 (2017), no. 1, 473–492

(with Hyung-Joon Tag), Diameter of weak neighborhoods and the Radon-Nikodym property  in Orlicz-Lorentz spaces, J. Convex Anal. 24 (2017), no. 3, 969–985.

(with Li, Hongliang) Boundedness and compactness of Hardy operators on Lorentz-type spaces. Math. Nachr. 290 (2017), no. 5-6, 852–866.

(with M.M. Czerwinska), Geometric properties of noncommutative symmetric spaces of measurable operators and unitary matrix ideals. Comment. Math. 57 (2017), no. 1, 45–122.

(with Yves Raynaud), Abstract Lorentz spaces and K”othe duality, Indag. Math. (N.S.) 30 (2019), no. 4, 553–595.

(with Han Ju Lee and Hyung-Joon Tag), M-ideal properties of Orlicz-Lorentz spaces, Houston J. Math. 45 (2019), no. 1, 213–232.

(with Lee, Han Ju; Tag, Hyung Joon) Diameter two properties and the Radon-Nikodým property in Orlicz spaces. Indag. Math. (N.S.) 31 (2020), no. 5, 848–862.

A note on type of weak-L1 and weak-l1 spaces. Function spaces XII, 193–196, Banach Center Publ., 119,Polish Acad. Sci. Inst. Math., Warsaw, 2019.

(with Zyluk, Mariusz) Local geometric properties in quasi-normed Orlicz spaces. Function spaces XII, 197–221, Banach Center Publ., 119, Polish Acad. Sci. Inst. Math., Warsaw, 2019

(with Zyluk, Mariusz) Uniform convexity, reflexivity, superreflex-ivity and B convexity of generalized Sobolev spaces W1,F. J. Math. Anal. Appl. 509 (2022), no. 1, Paper No. 125925, 31 pp, https://doi.org/10.48550/arXiv.2112.05862

(with M. Zyluk), Density of smooth functions in Musielak-Orlicz spaces, 10 pp submitted December 2021 https://doi.org/10.48550/arXiv.2201.05694

(with M. Zyluk) Density of smooth functions in Musielak-Orlicz-Sobolev spaces, 66 pp. to be submitted

Non-Refereed Publications

Isometries of Orlicz spaces, Proceedings of the Orlicz Memorial Conference, March 21-23, 1991, Oxford, Mississippi.  

(with L.Maligranda and L.E.Persson), Type, cotype and convexity properties of Orlicz spaces, Colloquium Del Departamento De Analisis Matematico, Curso 1996-1997, No. 42, 113-126.  

Remarks on isometries in function spaces, Proceedings of The Nordic Summer School for Female Ph.D. Students in Mathematics, June 15 - 20, 1996.  

(with H.Hudzik and M.Mastylo), On some results in Orlicz and Musielak-Orlicz spaces (in Polish), "Viro Docto Atque Iusto Juliano Musielak", Faculty of Mathematics and Computer Sciences of The A.Mickiewicz University in Poznan, (1999 ), 49 - 69.  

(with H.Hudzik, J.Musielak and R.Pluciennik), Tingfu Wang - his life and contributions to mathematics, "Function Spaces", Proceedings of the Conference in Wroclaw in 2001, World Scientific, 2003, 1-15.  

Presentations - Conference (refereed *)

"Strict Convexity of Orlicz Spaces" Conference on Approximation and Function Spaces, Varna, Bulgaria, 1981.  

"Uniform convexity in Orlicz spaces", International Congress of Mathematicians, Warsaw, Poland, 1983.  

"Local uniform convexity of Orlicz spaces", 12th Winter School on Abstract Analysis, Czechoslovakia, 1984.  

"On some types of convexity in Orlicz spaces of vector valued functions",13th Winter School on Abstract Analysis, Czechoslovakia, 1985.  

"On some Banach algebras given by a  modular”, Alfred Haar Memorial Conference, Budapest,  Hungary, 1985. 

"Kolmogorov and Riesz type criteria on compactness in Kothe spaces of vector valued functions", International Conference on Function Spaces, Poznan, Poland, 1986.  

"Rotundity in Kothe spaces of vector valued functions", International Conference on Geometry of Banach Spaces, Mons, Belgium, 1987.  

"Extreme points in Orlicz-Lorentz spaces" Annual Meeting of A.M.S., Phoenix, 1989.  

"Type and cotype in Kothe spaces of vector valued functions", Annual Meeting of AMS, Louisville, 1990.  

"Isometries of Musielak-Orlicz spaces", Conference on Function Spaces, Edwardsville, 1990.  

"Historical review of isometries in Banach function spaces", Orlicz Memorial Conference, Oxford, Mississippi, 1991.  

"Transitivity and almost transitivity of the norm in Banach function spaces", Annual Meeting of AMS, San Antonio, Texas, 1993.  

"L- and M - projections in Kothe function spaces", Conference on Functional Analysis and Applications, Gargnano, Italy, 1993.  

"Monotonicity properties of Lorentz spaces and their applications to Orlicz-Lorentz spaces", Annual Meeting of AMS, Cincinnati, 1994.  

"Geometric properties of Calderon-Lozanovskii spaces", International Conference on Convexity, Paris, France, 1994.  

"Type and cotype in Banach spaces", one hour review lecture; Fourth Int. Conf. On Function Spaces, Zielona Gora, Poland, 1995.  

"Convexity properties of Calderon-Lozanovskii spaces", Meeting of the Swedish Mathematical Society at University of Umea, Sweden, 1996.  

"On isometries in Banach function spaces", one hour review talk at "Nordic Summer School for female Ph.D. students in Mathematics", Lulea, Sweden, 1996.  

"Dunford-Pettis property in symmetric spaces", Special Session in Banach Spaces, AMSmeeting in Atlanta, October 1997.  

"Convexity properties in Orlicz spaces and their generalizations", invited talk to a special session devoted to W. Orlicz, "Function Spaces Conference", Poznan, Poland, 1998, August 28 - September 2, 1998.    

"Convexity properties and type and cotype in Lorentz spaces", International Conference on Mathematical Analysis and its Applications, Taiwan, January 2000.  

" Convexity properties of Lorentz spaces Gamma_{p,w}", contributed talk in AMS meeting in New Orleans, January 2001.  

"Lorentz Spaces; a one-hour invited lecture", Conference "Function Spaces VI", Wroclaw, Poland, September 2001.

"Duality and classical operators in function spaces", Special session in Banach spaces, AMS meeting in Atlanta, March 2002.  

"Schur and Dunford Pettis properties in sequence spaces", Conference in Analysis, Technion, Haifa, Israel, May 23-28, 2002.  

"On uniqueness of extension of polynomials in Banach function spaces", plenary speaker on The Wladyslaw Orlicz Centenary Conference and Function Spaces VII, Poznan, July 21-25, 2003.  

"Complex convexity of Orlicz-Lorentz spaces and its applications", Special session in Banach spaces, AMS meeting in Athens, Ohio, March, 2004.  

"On uniqueness of extension of polynomials", Korea Operator Theory and its Applications Conference (KOTAC), Seoul National University, Korea, June 17-19, 2004, plenary speaker.

"Type and convexity in Marcinkiewicz and Lorentz spaces", Special session in Banach spaces and Operator Theory, AMS meeting in Pittsburgh, November 2004.

  “Complex convexity of Lorentz spaces and its applications”, Conference: Infinite Dimensional Analysis, Kent, Ohio, February 2005.       

  “On type and cotype constants one in Orlicz spaces”, Special Session in Banach Spaces,AMS meeting in Miami, Florida, April 2006.

“On copies of $ell_p$ -spaces in Orlicz-Lorentz sequence spaces”, Conference: The 5th Conference on Function Spaces, Edwardsville, Illinois, May 2006, plenary speaker.

 “On the extension of polynomials”,  Conference: Banach spaces and their applications in Analysis', in  honor of  Nigel Kalton's 60th birthday, May 22-27, 2006 at Miami University in Oxford, Ohio.

“Isomorphic structure of Orlicz-Lorentz sequence spaces”, Conference: Function Spaces VIII, Bedlewo, Poland, July, 2006, plenary speaker.  

"On isomorphic copies in Orlicz-Lorentz spaces, Conference to honor 65th birthday of Lars Erik Persson, The University of technology in lulea, Sweden, June 2009, plenary speaker

 "Isomorphic copies of $l_p$ in Orlicz-Lorentz spaces",  Joint American Chinese Mathematics meeting in Shanghai, December 2008

"Applications of differentiability of the norm of Lorentz spaces in approximation theory", 6th Conference on Function Spaces at SIUE, May 2010, plenary speaker.

"Symmetric spaces of measurable operators", Conference: Function Spaces X, A. Mickiewicz University, Poznan, Poland, 2012, plenary speaker.

"Overview of geometric properties in symmetric spaces of measurable operators", The 7th ILJU School of Mathematics, Banach Spaces and Related Topics, January/February 2013, Gyeongju, South Korea.

"New formulas for decreasing rearrangements and a class of Orlicz-Lorentz spaces", Southeastern Sectional Meeting of Amer. Math. Soc., University of Mississippi, Oxford, March 2013.

“Duality formulas in Orlicz-Lorentz spaces”, 50 minutes lecture at “The Seventh Conference on Function Spaces”, SIUE, Edwardsville, May 2014.

“Review on Banach Envelop in quasi-normed spaces”,  International Conference “Function Spaces XI”, 1 hour lecture, Zielona Gora, July 2015.

“The Banach envelops in the spaces of measurable operators”, University of Paris VI, Paris, France, June 2016.

"Diameter two peoperies in Banach spaces", Analysis Seminar, University of Technology, July 2016

The conference “Function Spaces XII, Geometry of Banach Spaces and Related Topics”, Jagiellonian University, Krakow, 9-14 July 2018, “Abstract Lorentz spaces and Koethe duality”, Invited talk, plenary speaker, 2018

Presentations - Universities/Industry (refereed *)

"Convolution operators in Orlicz spaces" Complutense University, Madrid, Spain, 1986.  

"Various rotundity properties in Orlicz spaces", Free University, Berlin, Germany, 1987.  

"Modular and Orlicz spaces", Cleveland State University, Cleveland, Ohio, 1988.  

"Strict and uniform convexity in Orlicz spaces", The Citadel, Charleston, 1989.  

"Geometric properties of Orlicz spaces", Oakland University, Rochester, 1989.  

"Type and cotype of Musielak-Orlicz spaces", Southwest Missouri State University, Springfield, 1990.   

"Geometric properties of Orlicz spaces", University of Mississippi, Oxford, 1990.  

"New results on isometries in certain type of function spaces", Analysis Meeting, University of Arkansas, Fayetville, 1990.  

"Isometries and almost transitivity of the norm in Orlicz spaces", Claremont University, California, 1992.  

"Almost transitivity of the norm in Orlicz spaces" , Adam Mickiewicz University, Poznan, Poland, 1993.  

"Almost transitivity in Banach function spaces", Carnegie-Mellon University, Pittsburgh, 1994.  

"Convexity properties of some Banach function spaces", University of Pittsburgh, 1995.  

"Convexity and concavity in Banach lattices", colloquium at Lulea University of Technology, Sweden, 1996.  

"Convexity, type and cotype in Orlicz and Lorentz spaces", a seminar talk on "Seminaire d'Analyse", University VI, Paris, France, May 1996. 

" Lattice convexity and concavity in certain Lorentz spaces", Complutense Unuiversity, Madrid, Spain, October, 1996.  

" Review talk on convexity properties in Banach spaces", Centre de Recerca Matematica, Barcelona, Spain, October, 1996.  

"Indices and convexity properties in some nonsymmetric spaces", Ole Miss, Analysis Seminar, 1997.  

"Isometries in Banach function spaces II", colloquium at Lulea University of Technology, Sweden, May 1997.  

"Geometry of Lorentz spaces", colloquium at Miami University, Ohio; October 1998.  

"Order convexity and concavity properties in Lorentz spaces", A.Mickiewicz University, Analysis Seminar, March 1999.  

"On Hardy operators in Lorentz spaces", Lulea University of Technology, Sweden, May 1999.  

"Type and cotype in Banach function spaces", January 2000, colloquium talk at the Kyushu Institute of Technology, Japan, January 2000.  

"Order convexity properties in function lattices" and "Normal structure and fixed point in Banach spaces", two seminar talks at the Kyushu Institute of Technology, Japan, January 2000.

"On Schur property in sequence spaces", Colloquium talk at The University of Technology in Lulea, Sweden, June 2000.

"Shur and Dunford-Pettis property in Musielak- Orlicz sequence spaces", colloquium talk in Ole Miss, October, 2000.

"On isomorphic $l_p$ -subspaces in Lorentz spaces", colloquium talk, Ole Miss, November, 2001.  

"Projections in function spaces", colloquium talk at A.Mickiewicz University in Poznan, Poland, March 2002.  

"Geometric properties of Lorentz spaces", colloquium talk at KAIST, Taejon, Korea, August 2002.

"Is Lorentz space always a linear space?", colloquium talk at The University of Missouri in Columbia, February, 2003.  

"On some geometric properties in Lorentz spaces", colloquium talk at Miami University, Oxford OH, March, 2003.  

"On type in quasi-Banach spaces", colloquium talk at Mathematical Institute of Polish Academy of Sciences, Warsaw, May, 2003.  

"On type and order convexity in Marcinkiewicz spaces", Universite de Paris VI, Paris, May, 2004. 

 “Complex convexity and its applications to the Bishop-Phelps theorem for bilinear operators”,     Universite de Paris VI, Paris, May, 2005

 “On type in Lorentz and Marcinkiewicz spaces in case of quasi-Banach spaces”, Uppsala  University, Uppsala, Sweden, June 2005.

 “On type in Lorentz and Marcinkiewicz spaces in case of quasi-Banach spaces”, Lulea   University of Technology, Lulea, Sweden, June 2005.

 “Review on type and cotype in quasi-Banach spaces”, A. Mickiewicz University, Poznan, Poland, 2005. 

“On extension of polynomials in Banach spaces”,  Universite de Paris VI, Paris, June, 2006.

“On the Daugavet property in certain Banach function spaces”, March 2007, Granada University, Spain. 

  “Review on the local geometry in Banach function lattices”, April 2007, University of Florida, Tampa. 

 “On the best convexity and concavity constants in Lorentz and Marcinkiewicz spaces”, University of  Paris VI, May 2007.                                                                                                                                     

"On weak neighborhoods and the Daugavet property", Universite de Paris VI, Pierre et Marie Curie, May 2008.

" On the isomorphic structure of rearrangement invariant spaces", A.Mickiewicz University, Poznan, Poland, June 2008.

"Isomorphic structure of certain rearrangement invariant spaces", The University of New South Wales, Sydney, Australia, March 2010.

"On l_p order isomorphic copies in rearrangement invariant spaces", The University of Alberta, Canada, January 2011.

"On the Daugavet property in Orlicz spaces", Complutense University, Madrid, Spain, April 2011.

"On the Daugavet property in Koethe spaces", Universite de Paris VI, Pierre et Marie Curie, May 2011.

"The Daugavet property in rearrangement invariant spaces", A. Mickiewicz University, Poznan, Poland, June 2011.

"The spaces of symmetric operators", Universite de Paris VI, Pierre et Marie Curie, France, June 2013.

“Banach Envelops in quasi-Banach spaces”, University of Technology, Poznan, Poland, June 2015.

“Banach envelops and Mackey topology in function spaces”, Analysis Seminar in UoM, September 2015   

“Some formulas for decreasing rearrangements and applica-tions”, “Noncommutative spaces of measurable operators”, January 2017The 12th ILJU School of Mathematics Banach Spaces and Related Topics; three one hour lectures in the workshop in South Korea, 2017

“Diameter of weak neighborhoods and the Radon-Nikod'ym property in Orlicz-Lorentz spaces”, June 2017, Geometry of Banach Spaces and Related Topics, June 8th-10th 2017, Krak'ow, Poland; one hour plenary lecture, 2017

“Geometric properties of noncommutative spaces of measurable operators”, Banach Spaces and Operator Theory with Applications for 60th birthday of professor Mieczys{l}aw Masty{l}o} July 4 - 7, 2017; one hour plenary lecture, 2017

“Generalized Lorentz spaces and K"othe duality” Conference on Non Linear Functional Analysis, Universitat Politecnica de Va-lencia, Spain, 17-20 October 2017; one hour plenary lecture, 2017

The conference at NUI Galway, Ireland, on the occasion of 65th birthday of Raymond Ryan, three day meeting covering Topics in Functional Analysis, 6 -11 July 2018, lecture “Banach Envelops”, 2018

Colloquium, The Claremont Center for the Mathematical Sciences Colloquium Series in the Spring 2018, 2 February 2018, “Noncommutative spaces of measurable operators”, 2018

Research visit at Sorbonne University, University of Pierre and Marie Curie, Paris VI, four weeks in May/June 2018, lecture on "Cesaro spaces", 2018

"Geometric properties of noncommutative spaces of measurable operators", colloquium talk at Ohio State University, Fall 2018

International Conference on Elliptic and Parabolic Problems, Gaeta, Italy, 05/20 - 05/24, 2019, talk in special session organized by Agnieszka Kalamajska and Elvira Zappale, "Density of smooth functions in Musielak-Orlicz spaces", 2019

Appendix A

Appendix B

Appendix C