• DML-CZ Home

26B25 Convexity, generalizations (25 articles)

• Pokorný, Dušan; Zajíček, Luděk: A characterization of sets in ${\mathbb R}^2$ with DC distance function. (English). Czechoslovak Mathematical Journal, vol. 72 (2022), issue 1, pp. 1-38
• Jayswal, Anurag; Baranwal, Ayushi: Relations between multidimensional interval-valued variational problems and variational inequalities. (English). Kybernetika, vol. 58 (2022), issue 4, pp. 564-577
• Kryštof, Václav: Further generalized versions of Ilmanen's lemma on insertion of $C^{1,\omega}$ or $C^{1,\omega}_{\text{\rm loc}}$ functions. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 62 (2021), issue 4, pp. 445-455
• Pokorný, Dušan; Zajíček, Luděk: Remarks on WDC sets. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 62 (2021), issue 1, pp. 81-94
• Kryštof, Václav: Generalized versions of Ilmanen lemma: Insertion of $ C^{1,\omega} $ or $ C^{1,\omega}_{{\rm loc}} $ functions. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 59 (2018), issue 2, pp. 223-231
• Dibala, Michal; Saminger-Platz, Susanne; Mesiar, Radko; Klement, Erich Peter: Defects and transformations of quasi-copulas. (English). Kybernetika, vol. 52 (2016), issue 6, pp. 848-865
• Pokorný, Dušan: Nonconvex Lipschitz function in plane which is locally convex outside a discontinuum. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 55 (2014), issue 4, pp. 509-521
• Özdemir, M. Emin; Akdemir, Ahmet Ocak; Yıldız, Çetin: On co-ordinated quasi-convex functions. (English). Czechoslovak Mathematical Journal, vol. 62 (2012), issue 4, pp. 889-900
• Zajíček, Luděk: Singular points of order $k$ of Clarke regular and arbitrary functions. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 53 (2012), issue 1, pp. 51-63
• Zajíček, Luděk: A note on propagation of singularities of semiconcave functions of two variables. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 51 (2010), issue 3, pp. 453-458
• Kačena, Miroslav: Products and projective limits of function spaces. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 49 (2008), issue 4, pp. 547-578
• Pavlica, David: A d.c. $C^1$ function need not be difference of convex $C^1$ functions. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 46 (2005), issue 1, pp. 75-83
• Šilhavý, M.: On semiconvexity properties of rotationally invariant functions in two dimensions. (English). Czechoslovak Mathematical Journal, vol. 54 (2004), issue 3, pp. 559-571
• Pavlica, David: On the points of non-differentiability of convex functions. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 45 (2004), issue 4, pp. 727-734
• Zelený, Miroslav: An example of a $\Cal C^{1,1}$ function, which is not a d.c. function. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 43 (2002), issue 1, pp. 149-154
• Barza, Sorina; Persson, Lars-Erik: Weighted multidimensional inequalities for monotone functions. (English). Mathematica Bohemica, vol. 124 (1999), issue 2, pp. 329-335
• Trif, Tiberiu: Singularities and equicontinuity of certain families of set-valued mappings. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 39 (1998), issue 2, pp. 353-365
• Veselý, Libor: The distance between subdifferentials in the terms of functions. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 34 (1993), issue 3, pp. 419-424
• Mařík, Jan Derivatives and convexity (English). Real Anal. Exchange 17 (2) (1991/92), 745–747
• Kopecká, Eva; Malý, Jan: Remarks on delta-convex functions. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 31 (1990), issue 3, pp. 501-510
• Nikodem, Kazimierz: A characterization of midconvex set-valued functions. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 30 (1989), issue 2, pp. 125-129
• Pelant, Jan; Poljak, Svatopluk; Turzík, Daniel: Limit behaviour of trajectories involving subgradients of convex functions. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 28 (1987), issue 3, pp. 457-466
• Zajíček, Luděk: A note on partial derivatives of convex functions. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 24 (1983), issue 1, pp. 89-91
• Klíma, Vlastimil; Netuka, Ivan: Smoothness of a typical convex function. (English). Czechoslovak Mathematical Journal, vol. 31 (1981), issue 4, pp. 569-572
• Nedoma, Josef: Complete extension of a convex function. (English). Czechoslovak Mathematical Journal, vol. 30 (1980), issue 1, pp. 36-40