OperatorApplied

OperatorApplied[f,n] represents an operator form of the function f of n arguments so that OperatorApplied[f,n][x1]…[xn] is equivalent to f[x1,…,xn].

OperatorApplied[f] represents an operator form of the function f of two arguments so that OperatorApplied[f][y][x] is equivalent to f[x,y].

OperatorApplied[f,{i1,…,in}] represents an operator form of the function f of n arguments so that OperatorApplied[f,{i1,…,in}][x1]…[xn] is equivalent to f[xi1,…,xin].

OperatorApplied[f,k->{i1,…,in}] represents an operator form that takes k arguments.

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