Magma V2.29-5 Patch Notes

Basic Algebras¶

• Missing error checks have been added to functions for basic algebras which compute automorphisms or test isomorphism (example input reported by Bernhard Boehmler).

Commutative Algebra¶

• A crash in Groebner basis computation for a certain kind of module defined over a multivariate polynomial ring has been fixed.

Function Fields¶

• A crash in MaximalOrder for algebraic function fields defined over multivariate function fields has been fixed. Reported by Mike Zieve.
• The infinite places of degrees greater than the relative degree of a function field are now returned by Places when the degree argument is given as a second argument. Reported by Maarten Derickx.

Galois Groups¶

• Consistent setup has been ensured even for linear polynomials. Reported by Shiva Chidambaram.

Integer Ring¶

• Hangs in MPQS have been fixed for very small inputs or for when the input has small non-squarefree factors.
• A crash in multiplication of very large integers has been fixed. Reported by N. Katz.

Lattices¶

• A bug in AdjacencyMatrix has been fixed.
• The Dual of an indefinite lattice can now be computed.

Polynomial Rings¶

• A hang in the Roots function when refining real roots of a certain integral polynomial has been fixed. Reported by Drew Sutherland.
• A hang in factorization of a certain type of integral univariate polynomial has been fixed. Reported by Drew Sutherland.

Representation Theory¶

• A crash in IrreducibleModules(G, K) for cyclotomic field $K$ has been fixed. Reported by Peter Mueller.

Sparse Matrices¶

• A crash in sparse matrix elimination for very large sparse matrices defined over the integer ring (Standard version only) has been fixed. Reported by Daniel Bassett.