07/20/2019, 10:16 PM
If you have a Schröder solution \( s(f(x))=cs(x) \) then you also have an Abel solution \( a(f(x))=1+a(x) \), by \( a(x)=\log_c(s(x)) \). Can't remember where the Schröder solution was introduced (am on travel - limited resources).
