KrylovKit

KrylovKit v0.10.0

Diff since v0.9.5

KrylovKit v0.10 does not include major breaking changes, but does include two new algorithms for eigenvalue problems, namely BlockLanczos for hermitian problems where repeated eigenvalues are expected and targetted, and BiArnoldi (accessible via the new bieigsolve method) for nonhermitian problems where both left and right eigenvectors are requested.

One small breaking change is that KrylovKit v0.10 changes the default verbosity to WARN_LEVEL, meaning that warnings are printed by default.

Finally, this release contains a number a bugfix in the LSMR algorithm (accesible via lssolve).

Merged pull requests:

• try more stable svd ad rule computation (#123) (@Jutho)
• Add Two-sided Arnoldi method (#124) (@tipfom)
• Block Lanczos for Multiple eigenvalues (#125) (@yuiyuiui)
• improve gkl and fix lssolve (#134) (@Jutho)
• Improve field types of blocklanczos methods (#135) (@gdalle)

Closed issues:

• A bug about degenerated eigsolve ad (#98)
• Consider increase verbosity for AD? (#104)
• BoundsError (#122)
• Different types for x and b? (#131)
• lssolve fails where linsolve succeeds on I x = [1, 0] (#133)