getBasis(ZZ,Ring) -- Get a basis for a degree of a ring.

Function: getBasis
Usage:

M = getBasis(n,R)
Inputs:
- n, an integer,
- R, a ring,
Optional inputs:
- Limit => ..., default value -1, Option to specify the maximum number of basis elements to return
Outputs:
- M, a matrix, The basis of the desired degree

Description

This function was not meant for general use, but it fixes the first degree in the degree tuple of the ring R, and finds a basis of that 'slice' of the ring. It does this by using a cached version of the ring that forgets all other degrees. A Ring object in Macaulay2 will not have this cached ring by default, but the rings used internally in the DGAlgebras package will.

Ways to use this method:

getBasis(ZZ,Ring) -- Get a basis for a degree of a ring.

The source of this document is in DGAlgebras.m2:1962:0.