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4.19.3 ring related functions

charstr
description of the coefficient field of a ring (see charstr)
keepring
move ring to next upper level (see keepring)
npars
number of ring parameters (see npars)
nvars
number of ring variables (see nvars)
ordstr
monomial ordering of a ring (see ordstr)
parstr
names of all ring parameters or the name of the n-th ring parameter (see parstr)
qring
quotient ring (see qring)
ringlist
decomposition of a ring into a list of its components (see ringlist)
setring
setting of a new basering (see setring)
varstr
names of all ring variables or the name of the n-th ring variable (see varstr)