FUNCTION: IsStdCTab - test whether the argument is a standard contretableau

CALLING SEQUENCE:

IsStdCTab(expr)

TYP[IsStdCTab](expr)

PARAMETERS:

expr = any expression

SYNOPSIS:

• The IsStdCTab function tests whether expr is a contretableau that is contretableau filled with n distinct letters from 1 to n.

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

EXAMPLES:

> with(TYP):
> ct:=[[1], [4,2], [6,5,3]]:
> IsStdCTab(ct);
 
                                    true