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