fix typo in Confluence

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wadler 2021-08-10 17:51:05 +01:00
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commit effcfb1e3e

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@ -611,7 +611,7 @@ confluence L↠M₁ L↠M₂
## Notes ## Notes
Broadly speaking, this proof of confluence, based on parallel Broadly speaking, this proof of confluence, based on parallel
reduction, is due to W. Tait and P. Martin-Löf (see Barendredgt 1984, reduction, is due to W. Tait and P. Martin-Löf (see Barendregt 1984,
Section 3.2). Details of the mechanization come from several sources. Section 3.2). Details of the mechanization come from several sources.
The `subst-par` lemma is the "strong substitutivity" lemma of Shafer, The `subst-par` lemma is the "strong substitutivity" lemma of Shafer,
Tebbi, and Smolka (ITP 2015). The proofs of `par-triangle`, `strip`, Tebbi, and Smolka (ITP 2015). The proofs of `par-triangle`, `strip`,