Notation of several functions defined identiaclly

Question

One can consider the following functions: $$f(x):X\mapsto{R}$$ $$g(x):X\mapsto{R}$$ $$h(x):X\mapsto{R}$$ Is it correct to rewrite above mentioned in the following way: $$f,g,h:X\mapsto{R}$$ or what is the appropriate way to rewrite aforementioned in more compact way?