Skip to content

perf: Field.toEuclideanDomain fast_instance% #39293

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
kbuzzard wants to merge 2 commits into
base: master
Choose a base branch
from
+3 −1
Open

perf: Field.toEuclideanDomain fast_instance% #39293

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
0d7dd61
perf: Field.toEuclideanDomain fast_instance%
kbuzzard May 13, 2026
4529a2d
Merge branch 'master' into kbuzzard-euclideandomain-fastinstance
kbuzzard May 13, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
4 changes: 3 additions & 1 deletion Mathlib/Algebra/EuclideanDomain/Field.lean
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,8 @@ public import Mathlib.Algebra.EuclideanDomain.Defs
public import Mathlib.Algebra.Field.Defs
public import Mathlib.Algebra.GroupWithZero.Units.Basic

import Mathlib.Tactic.FastInstance

/-!
# Instances for Euclidean domains
* `Field.toEuclideanDomain`: shows that any field is a Euclidean domain.
Expand All @@ -21,7 +23,7 @@ namespace Field
variable {K : Type*} [Field K]

-- see Note [lower instance priority]
instance (priority := 100) toEuclideanDomain : EuclideanDomain K :=
instance (priority := 100) toEuclideanDomain : EuclideanDomain K := fast_instance%
{ toCommRing := toCommRing
quotient := (· / ·), remainder := fun a b => a - a * b / b, quotient_zero := div_zero,
quotient_mul_add_remainder_eq := fun a b => by
Expand Down
Loading