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4.16.2 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)
setring
- set a new basering (see setring)
varstr
- names of all ring variables or the
name of the n-th ring variable (see varstr)
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