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feat: improve instantiateExtTheorem in grind#12319

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leodemoura merged 1 commit intomasterfrom
grind_ext_isDefEq
Feb 5, 2026
Merged

feat: improve instantiateExtTheorem in grind#12319
leodemoura merged 1 commit intomasterfrom
grind_ext_isDefEq

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This PR leverages the fact that expressions are type correct in grind and the conclusion of extensionality theorems is of the form ?a = ?b.

This PR is relevant for #12179 because it enables us to use a weaker isDefEq that does not bump the transparency level when processing implicit arguments.

This PR leverages the fact that expressions are type correct in
`grind` and the conclusion of extensionality theorems is of the form
`?a = ?b`.

This PR is relevant for #12179 because it enables us to use a weaker
`isDefEq` that does not bump the transparency level when processing
implicit arguments.
@leodemoura leodemoura added the changelog-tactics User facing tactics label Feb 5, 2026
@leodemoura leodemoura enabled auto-merge February 5, 2026 02:20
@leodemoura leodemoura added this pull request to the merge queue Feb 5, 2026
Merged via the queue into master with commit 7c350e3 Feb 5, 2026
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@github-actions github-actions bot added the toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN label Feb 5, 2026
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