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liftable -- whether a ring element can be lifted to another ring
Synopsis
Usage:
liftable(f,R)
Inputs:
f
,
a
ring element
R
,
a
ring
Outputs:
a
Boolean value
, whether f can be lifted to the ring R
Description
The ring
R
should be one of the base rings associated with the ring of
f
.
i1 : R = ZZ[x] o1 = R o1 : PolynomialRing
i2 : liftable ((x-1)*(x+1)-x^2, ZZ) o2 = true
See also
lift
-- lift to another ring
baseRings
-- store the list of base rings of a ring