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D.2.8.4 defring
Procedure from library ring.lib (see ring_lib).
- Usage:
- defring(ch,n,va,or); ch,va,or=strings, n=integer
- Return:
- ring R with characteristic 'ch', ordering 'or' and n variables with
names derived from va.
If va is a single letter, say va="a", and if n<=26 then a and the
following n-1 letters from the alphabet (cyclic order) are taken as
variables. If n>26 or if va is a single letter followed by a bracket,
say va="T(", the variables are T(1),...,T(n).
- Note:
- This proc is useful for defining a ring in a procedure.
This proc uses 'execute' or calls a procedure using 'execute'.
Example:
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