pl = plethysm(f,g)
pl = f @ g
Given a symmetric functions f and the character g of a virtual representation of a product of general linear and symmetric groups, the method computes the character of the plethystic composition of f and g. The result of this operation will be an element of the ring of g. We use the binary operator @ as a synonym for the plethysm function.
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The object plethysm is a method function.