elementary_vectors.utility¶

Utility functions¶

Functions

is_constant(expression)

Return whether this expression is constant.

elementary_vectors.utility.is_constant(expression)¶

Return whether this expression is constant.

Symbolic expressions are considered constant if they do not depend on any variables.

EXAMPLES:

sage: from elementary_vectors.utility import is_constant
sage: is_constant(5)
True
sage: var('a, b')
(a, b)
sage: is_constant(a)
False
sage: is_constant(-a)
False
sage: is_constant(b^2 - a)
False
sage: is_constant(SR(5))
True