Magma

MAGMA Computational Algebra System

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Next: Finite Soluble Groups Up: Groups Previous: Permutation Groups


Matrix Groups


New Features:

  • Construction of orbits for a matrix group has been modernised to use new matrix action code. This improves both the Orbit function and construction of base and strong generating set.
  • RandomSchreierBounded function installed. Construction stops if a basic orbit length exceeds the given bound. Intended for deciding whether or not to use BSGS methods for a matrix group.
  • Improved algorithms for computing the soluble radical of matrix groups over the integers and rationals (with a BSGS) have been included.
  • Generators for the special and general linear groups over the integers have been included.
  • A package developed by Alla Detinko, Dane Flannery and Eamonn O'Brien allows the user to determine whether or not a matrix group defined over a rational function field is finite. If it is finite then functions are provided which return the order and an isomorphic matrix group defined over a finite field.


next up previous
Next: Finite Soluble Groups Up: Groups Previous: Permutation Groups

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