FUNCTION: IsStdTab - test whether the argument is a standard tableau

CALLING SEQUENCE:

IsStdTab(expr)

TYP[IsStdTab](expr)

PARAMETERS:

expr = any expression

SYNOPSIS:

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

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

EXAMPLES:

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