gb

gb f -- compute the Groebner basis for the image of a Matrix f.

If the computation is interrupted, then the partially completed Groebner basis is available as f#{t,i} , where t is true or false depending on whether syzygies or the change of basis matrix are to be computed, and i is the number of rows of the syzygy matrix to be retained. The computation can be continued by repeating the gb command with the same options.

Optional arguments and flags:

  • Compute -- whether to start the computation
  • DegreeLimit -- compute only up to this degree
  • GeneratorLimit -- stop when this number of generators are obtained
  • SyzygyLimit -- stop when this number of syzygies are obtained
  • PairLimit -- stop when this number of pairs are handled
  • CodimensionLimit -- stop when this codimension is reached
  • Minimal -- whether to produce a set of minimal generators
  • NextExponentSize -- the number of bits to use for each exponent the next time expansion occurs.
  • Syzygies -- whether to collect syzygies
  • ChangeMatrix -- whether to produce the change of basis matrix
  • SyzygyRows -- if syzygies are to be collected, the number rows of the syzygy matrix to collect
  • Strategy -- change the strategy used to compute Groebner bases
  • See also GroebnerBasis.

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