ParametricRegion

ParametricRegion[{f1,…,fn},{u1,…,um}] represents a region in n given by the points {f1,…,fn} for parameters ui∈.

ParametricRegion[{f1,…,fn},{{u1,a1,b1},…}] constrains parameters to an interval a1≤u1≤b1 etc. 

ParametricRegion[{{f1,…,fn},cond},…] constrains parameters to satisfy the condition cond.

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