Mathlib v3 is deprecated. Go to Mathlib v4

Commit 2022-03-22 14:24 1f470163

View on Github →

refactor(order/hom/complete_lattice): Fix the definition of frame_hom (#12855) I misread "preserves finite meet" as "preserves binary meet", meaning that currently a frame_hom does not have to preserve (subtly, preserving arbitrary join does not imply that either). This fixes my mistake.

Estimated changes