Alonso, Javier; Martini, Horst; Wu, Senlin Orthogonality types in normed linear spaces. (English) Zbl 1503.46009 Papadopoulos, Athanase (ed.), Surveys in geometry I. Cham: Springer. 97-170 (2022). Reviewer: Dirk Keppens (Gent) MSC: 46B20 46C15 51F20 52A21 PDF BibTeX XML Cite \textit{J. Alonso} et al., in: Surveys in geometry I. Cham: Springer. 97--170 (2022; Zbl 1503.46009) Full Text: DOI
Derȩgowska, Beata; Gryszka, Beata; Gryszka, Karol; Wójcik, Paweł Semi-smooth points in some classical function spaces. (English) Zbl 1486.46014 Result. Math. 77, No. 1, Paper No. 14, 16 p. (2022). Reviewer: Kallol Paul (Kolkata) MSC: 46B20 46E40 46B25 PDF BibTeX XML Cite \textit{B. Derȩgowska} et al., Result. Math. 77, No. 1, Paper No. 14, 16 p. (2022; Zbl 1486.46014) Full Text: DOI
Wójcik, Paweł Semi-smooth points in space of operators on Hilbert space. (English) Zbl 1490.46015 Oper. Matrices 14, No. 4, 951-958 (2020). MSC: 46B20 46B28 PDF BibTeX XML Cite \textit{P. Wójcik}, Oper. Matrices 14, No. 4, 951--958 (2020; Zbl 1490.46015) Full Text: DOI
Zamani, Ali; Dehghani, Mahdi On exact and approximate orthogonalities based on norm derivatives. (English) Zbl 1462.46014 Brzdęk, Janusz (ed.) et al., Ulam type stability. Based on the conferences on Ulam type stability (CUTS), Cluj-Napoca, Romania, July 4–9, 2016 and Timisoara, Romania, October 8–13, 2018. Cham: Springer. 469-507 (2019). MSC: 46B20 46C50 46-02 PDF BibTeX XML Cite \textit{A. Zamani} and \textit{M. Dehghani}, in: Ulam type stability. Based on the conferences on Ulam type stability (CUTS), Cluj-Napoca, Romania, July 4--9, 2016 and Timisoara, Romania, October 8--13, 2018. Cham: Springer. 469--507 (2019; Zbl 1462.46014) Full Text: DOI
Abed, Mohammed Y.; Dehghani, Mahdi; Jahanipur, Ruhollah Approximate \(\rho_\lambda^v\)-orthogonality and its preservation. (English) Zbl 1439.46009 Ann. Funct. Anal. 10, No. 4, 483-495 (2019). MSC: 46B20 46C50 47B99 PDF BibTeX XML Cite \textit{M. Y. Abed} et al., Ann. Funct. Anal. 10, No. 4, 483--495 (2019; Zbl 1439.46009) Full Text: DOI Euclid
Wójcik, Paweł Characterization of linear similarities through functional equation and mappings preserving orthogonalities. (English) Zbl 1427.46017 Linear Algebra Appl. 579, 206-216 (2019). Reviewer: Mohammad Sal Moslehian (Mashhad) MSC: 46C50 46B20 39B52 15A03 15A86 PDF BibTeX XML Cite \textit{P. Wójcik}, Linear Algebra Appl. 579, 206--216 (2019; Zbl 1427.46017) Full Text: DOI
Dehghani, Mahdi; Abed, Mohammed; Jahanipur, Ruhollah A generalized orthogonality relation via norm derivatives in real normed linear spaces. (English) Zbl 1428.46008 Aequationes Math. 93, No. 4, 651-667 (2019). MSC: 46B20 46C50 39B82 PDF BibTeX XML Cite \textit{M. Dehghani} et al., Aequationes Math. 93, No. 4, 651--667 (2019; Zbl 1428.46008) Full Text: DOI
Balestro, Vitor; Shonoda, Emad On a cosine function defined for smooth normed spaces. (English) Zbl 1398.46012 J. Convex Anal. 25, No. 1, 21-39 (2018). MSC: 46B20 52A10 52A21 51B20 PDF BibTeX XML Cite \textit{V. Balestro} and \textit{E. Shonoda}, J. Convex Anal. 25, No. 1, 21--39 (2018; Zbl 1398.46012) Full Text: arXiv Link
Dehghani, Mahdi; Zamani, Ali Linear mappings approximately preserving \(\rho_\ast\)-orthogonality. (English) Zbl 1383.46014 Indag. Math., New Ser. 28, No. 5, 992-1001 (2017). MSC: 46B20 PDF BibTeX XML Cite \textit{M. Dehghani} and \textit{A. Zamani}, Indag. Math., New Ser. 28, No. 5, 992--1001 (2017; Zbl 1383.46014) Full Text: DOI
Balestro, Vitor; Horváth, Ákos G.; Martini, Horst; Teixeira, Ralph Angles in normed spaces. (English) Zbl 1365.52006 Aequationes Math. 91, No. 2, 201-236 (2017). Reviewer: S. S. Kutateladze (Novosibirsk) MSC: 52A21 32A70 46B20 46C15 46C50 51M05 51M25 PDF BibTeX XML Cite \textit{V. Balestro} et al., Aequationes Math. 91, No. 2, 201--236 (2017; Zbl 1365.52006) Full Text: DOI arXiv
Wójcik, Paweł Characterizations of smooth spaces by approximate orthogonalities. (English) Zbl 1331.46013 Aequationes Math. 89, No. 4, 1189-1194 (2015). Reviewer: Maria Fernanda Botelho (Memphis) MSC: 46B20 46C50 PDF BibTeX XML Cite \textit{P. Wójcik}, Aequationes Math. 89, No. 4, 1189--1194 (2015; Zbl 1331.46013) Full Text: DOI
Zamani, Ali; Moslehian, Mohammad Sal Approximate Roberts orthogonality. (English) Zbl 1329.46019 Aequationes Math. 89, No. 3, 529-541 (2015). MSC: 46B20 46C05 PDF BibTeX XML Cite \textit{A. Zamani} and \textit{M. S. Moslehian}, Aequationes Math. 89, No. 3, 529--541 (2015; Zbl 1329.46019) Full Text: DOI
Sikorska, Justyna Orthogonalities and functional equations. (English) Zbl 1316.39008 Aequationes Math. 89, No. 2, 215-277 (2015). MSC: 39B55 39-02 39B52 39B82 46B20 47B49 15A86 PDF BibTeX XML Cite \textit{J. Sikorska}, Aequationes Math. 89, No. 2, 215--277 (2015; Zbl 1316.39008) Full Text: DOI
Wójcik, Paweł Linear mappings preserving \(\rho \)-orthogonality. (English) Zbl 1238.46014 J. Math. Anal. Appl. 386, No. 1, 171-176 (2012). MSC: 46B20 PDF BibTeX XML Cite \textit{P. Wójcik}, J. Math. Anal. Appl. 386, No. 1, 171--176 (2012; Zbl 1238.46014) Full Text: DOI