Question: ApplyRule to generic functions


Does anyone know how to use applyrule to generic functions? I have a set of functions in 4D of the form name(t,x,y,z) and I would like to replace all of them by taking

name(t,x,y,z)-> name_1(t,x)*name_2(y,z)

I think I can use ApplyRule to do this but I am not sure how.



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