FUNCTION: Ism - test whether the argument is an element of the monomial basis

CALLING SEQUENCE:

Ism(expr)

TYP[Ism](expr)

PARAMETERS:

expr = any expression

SYNOPSIS:

• The Ism function tests whether the argument expr is an element of the monomial basis, that is m[part] where part denotes a partition in non-increasing order.

• Whenever there is a conflict between the function name Ism and another name used in the same session, use the long form TYP['Ism'].

EXAMPLES:

> with(TYP):
> Ism(m[2,1,1]);
 
                                     true