scholarly journals Cauchy’s functional equation and extensions: Goldie’s equation and inequality, the Gołąb–Schinzel equation and Beurling’s equation

2015 ◽  
Vol 89 (5) ◽  
pp. 1293-1310 ◽  
Author(s):  
N. H. Bingham ◽  
A. J. Ostaszewski
Author(s):  
Watcharapon Pimsert ◽  
Vichian Laohakosol ◽  
Sajee Pianskool

Using a method modified from that used by Pisot and Schoenberg in 1964-1965, a Cauchy's functional equation with restricted domains in the complex field is solved for uniformly continuous solutions.


1966 ◽  
Vol 9 (4) ◽  
pp. 473-480 ◽  
Author(s):  
Hiroshi Haruki

Considering Cauchy's functional equationf(z1+z2)=f(z1)+ f(z2),where f(z) is an entire function of z, we have the following functional equation:(1) |f(x+iy)|=|f(x)+f(iy)|,where x and y are real.


1989 ◽  
Vol 38 (1) ◽  
pp. 56-65
Author(s):  
Miljenko Crnjac ◽  
Harry I. Miller ◽  
Boško Živaljević

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