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7.7.8.0. involution
Procedure from library involut.lib (see involut_lib).

Usage:
involution(m, theta); m is a poly/vector/ideal/matrix/module, theta is a map

Return:
object of the same type as m

Purpose:
applies the involution, presented by theta to the object m

Theory:
for an involution theta and two polynomials a,b from the algebra,
theta(ab) = theta(b) theta(a); theta is linear with respect to the ground field

Note:
This is generalized "theta(m)" for data types unsupported by "map".

Example:
 


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