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D.2.4.3 setglobalrings
Procedure from library grobcov.lib (see grobcov_lib).
- Usage:
- setglobalrings();
No arguments
- Return:
- After its call the rings @R=Q[a][x], @P=Q[a], @RP=Q[x,a] are
defined as global variables.
- Note:
- It is called internally by the fundamental routines of the
library grobcov, cgsdr, extend, pdivi, pnormalf, locus2d, locus2dto,
and killed before the output.
The user does not need to call it, except when it is interested
in using some internal routine of the library that
uses these rings.
The basering R, must be of the form Q[a][x], a=parameters,
x=variables, and should be defined previously.
Example:
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