Pythagorean orthogonality and additive mappings

1997 ◽  
Vol 53 (1-2) ◽  
pp. 108-126 ◽  
Author(s):  
György Szabó
Author(s):  
Najat Muthana ◽  
◽  
Asma Ali ◽  
Kapil Kumar

2003 ◽  
Vol 367 ◽  
pp. 213-224 ◽  
Author(s):  
Wu Jing ◽  
Pengtong Li ◽  
Shijie Lu

Author(s):  
Zbigniew Gajda
Keyword(s):  

In this paper we answer a question of Th. M. Rassias concerning an extension of validity of his result proved in [3].


2018 ◽  
Vol 11 (5) ◽  
pp. 735-752
Author(s):  
Pallavi Aggarwal ◽  
Steven Schlicker ◽  
Ryan Swartzentruber

1976 ◽  
Vol 14 (1-2) ◽  
pp. 67-71 ◽  
Author(s):  
J. Rätz
Keyword(s):  

2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Jianrong Wu ◽  
Lingxiao Lu

In this paper, the Hyers–Ulam–Rassias stabilities of two functional equations, f a x + b y = r f x + s f y and f x + y + z = 2 f x + y / 2 + f z , are investigated in the framework of fuzzy normed spaces.


Author(s):  
Siriporn Lapuangkham ◽  
Utsanee Leerawat

The main purpose of this paper is to describe the structure of a pair of additive mappings that are commuting on a semiprime ring. Furthermore, we prove that the existence of different commuting epimorphisms on a prime ring forces the ring to be commutative. Finally, we characterize additive mappings, which act as homomorphisms or antihomomorphisms on a semiprime ring.


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