Singular Manual: containedQ

| #### D.8.10.13 containedQ Procedure from library `zeroset.lib` (see zeroset_lib). Usage: containedQ(data, f [, opt]); data=list; f=any type; opt=integer Purpose: test if f is an element of data. Return: int 0 if f not contained in data 1 if f contained in data Options: opt = 0 : use '==' for comparing f with elements from data opt = 1 : use `sameQ` for comparing f with elements from data

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