Talk:Additive function
From Maths
"Warning about structure": "[math]\dots\implies f(0)=0[/math] so one must be careful!" --- I do not get the hint; naturally, additive function between groups sends 0 into 0, but why one must be careful? Boris (talk) 07:59, 19 March 2016 (UTC)
"On set functions": "for valued set functions (set functions that map to values)" --- ?? What is meant by "values"? I know what is called the value of a function; but is there a notion of a function that maps something to non-values?? Boris (talk) 08:03, 19 March 2016 (UTC)
