isPurePower -- determine whether a ring element is a pure power of a variable

Synopsis

Usage:

B=isPurePower f
Inputs:
- f, a ring element, an element of a polynomial ring
Outputs:
- B, a Boolean value, true if f is a nonzero power of a variable and false otherwise

Description

isPurePower tests a ring element in a polynomial ring to determine whether or not it is nonzero and a power of a variable. isPurePower is used in the lex-plus-powers LPP code.

i1 : R=ZZ/32003[a..c];

i2 : isPurePower a^4

o2 = true

i3 : isPurePower (a*b^5)

o3 = false

i4 : isPurePower (a^3-b^3)

o4 = false

Ways to use isPurePower :

isPurePower(RingElement)

For the programmer

The object isPurePower is a method function.

isPurePower -- determine whether a ring element is a pure power of a variable

Synopsis

Description

See also

Ways to use isPurePower :

For the programmer