# Commit 2022-04-12 15:33 c21561a0

View on Github →feat(algebra/direct_sum): Reindexing direct sums (#13076) Lemmas to reindex direct sums, as well as to rewrite direct sums over an option or sigma type.

Mathlib v3 is deprecated. Go to Mathlib v4

feat(algebra/direct_sum): Reindexing direct sums (#13076) Lemmas to reindex direct sums, as well as to rewrite direct sums over an option or sigma type.