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isScalar -- check whether a ring element is a scalar

Synopsis

Usage:

b = isScalar(f)
Inputs:
- f, a ring element, a ring element
Outputs:
- b, a Boolean value, true if f is a scalar, false otherwise.

Description

A synonym for liftable(f, coefficientRing ring f).

See also

isUnit -- whether a ring element is a unit
UnitTest -- Limit which units are to be pruned
liftable -- whether lifting to another ring is possible

Ways to use isScalar :

isScalar(RingElement)

For the programmer

The object isScalar is a method function.