A crash in WeilRestriction(F, n) for an algebraic function field F and integer n has been fixed. Reported (with supplied fix) by Yusuke Uesato.
OpenGraphFile now properly handles paths beginning with a tilde character. Reported by Primož Potočnik.
A crash using Induction on a representation of a subgroup of a pc-group has been fixed. Reported by Eamonn O'Brien.
Arithmetic in groups of Lie type defined over rings is now possible provided all ring elements encountered during the conversion of the group elements to Bruhat normal form are invertible. Reported by Heiko Dietrich.
For Coxeter groups defined by matrices $AandB$ of simple roots and simple coroots, the product A * Transpose(B) is now checked to ensure that it is a valid Cartan matrix.
Checking v in V when v is already an element of the vector space V now succeeds even if there is no echelon algorithm over the base ring.
Fixed a bug in creating quotients of modular curves when the quotient is an elliptic curve. Reported by Sachi Hashimoto.
New function Coefficients(f, b, e, d) for power, Laurent or Puiseux series f, which is equivalent to [Coefficient(f, i / d): i in [b..e]] but faster.
PowerRelation now allows the argument to have non-zero imaginary part when the maximum degree is 1. Note that this function is deprecated and it is recommended to use MinimalPolynomial instead, which already handled this case.
Powering a negative real number by a small rational number with odd denominator now returns the appropriate value instead of @NaN@.
Computing the n-th Root of a real number now raises an error if n is large, instead of (very slowly) computing a wrong result.
A bad slowdown in IsIsomorphism for G-modules defined over the rational field has been fixed. Reported by Eamonn O'Brien.
A crash in HasNonsingularPoint for a certain type of scheme defined over GF(2) has been fixed. Reported by David Zureick-Brown.
User package files which were not explicitly "frozen" were accidentally frozen automatically (since V2.28-4). This has been fixed.