INSTYTUT MATEMATYKI
Uniwersytet ¦l±ski
40-007 Katowice, ul. Bankowa 14

tel/fax (032) 2582976
e-mail:im@ux2.math.us.edu.pl



           Roman Badora – SPIS PUBLIKACJI

  1. On an invariant mean for J-essentially bounded functions, Facta Univ. Ser.  Math. Infor. 6 (1991), 95-106.

  2. On a joint generalization of Cauchy's and d'Alembert's functional equations, Aequationes Math. 43 (1992), no. 1,  72-89.

  3. On some generalized invariant means and their application to the stability of the Hyers-Ulam type, Ann. Polon. Math. 58 (1993), no. 2, 147-159.

  4. On some generalized invariant means and almost approximately additive functions, Publ. Math. Debrecen 44 (1994), no. 1-2, 123-135.

  5. On approximately additive functions, Polish-Austrian Seminar on Functional Equations and Iteration Theory (Cieszyn, 1994),Ann. Math. Sil. 8 (1994), 111-126.

  6. On the separation with n-additive functions, General Inequalities, 7 (Oberwolfach, 1995), 219-230, Internat. Ser. Numer. Math., 123, Birkhäuser, Basel, 1997.

  7. On the stability of the cosine functional equation, Rocznik Nauk.-Dydakt. Prace Mat. 15 (1998), 5-14.

  8. Monomial selections of set-valued maps, Aequationes Math. 58 (1999), no. 3, 214-222  (wspólnie zZs. Pálesem, L. Székelyhidim).

  9. On the stability of a functional equation for generalized trigonometric functions, Functional equations and inequalities, 1-5, Math. Appl., 518, Kluwer Acad. Publ., Dordrecht, 2000.

  10. Note on the superstability of the Cauchy functional equation, Publ. Math. Debrecen  57 (2000), no. 3-4, 421-424.

  11. On Hyers-Ulam stability of Wilson's functional equation, Aequationes Math. 60 (2000), no. 3, 211-218.

  12. On the d'Alembert type functional equation in Hilbert algebras, Funkcial. Ekvac. 43 (2000), no. 3, 405-418.

  13. On some trigonometric functional inequalities, Functional equations – results and advances, 3-15, Adv. Math. (Dordr.), 3, Kluwer Acad. Publ., Dordrecht, 2002 (wspólnie z R. Gerem).

  14. On approximate ring homomorphisms, J. Math. Anal. Appl. 276 (2002), no. 2, 589-597.

  15. Additive selections and the stability of the Cauchy functional equation, ANZIAM J. 44 (2003), no. 3, 323-337(wspólnie z  R. Gerem, Zs. Pálesem).

  16. Invariant means, set ideals and separation theorems, JIPAM. J. Inequal. Pure Appl. Math. 6 (2005), no. 1, Art. 18, 9 pp. (electronic).

  17. Decomposition of mappings approximately inner product preserving, Nonlinear Anal. 62 (2005), no. 6, 1015-1023 (wspólnie z J. Chmielińskim).

  18. On a generalized Wilson functional equation, Georgian Math. J. 12 (2005), no. 4, 595-606.

  19. On approximate derivations, Math. Inequal. Appl. 9 (2006), no. 1, 167-173.

  20. On generalized invariant means and separation theorems, JIPAM. J. Inequal. Pure Appl. Math. 7 (2006), no. 1, Art. 12, 8 pp. (electronic).

  21. On the Hahn-Banach theorem for groups, Arch. Math. (Basel), 86 (2006), no. 6, 517-528.





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