OAI/Algebra/AuslanderReiten/Ext/ExternalEvaluationSquare.lean

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2 declarations, 0 contain sorry, 0 declared as axioms

1. theorem OAI.ArExplicit.ExternalBalanced.horizontal_summand_natural line 22
2. theorem OAI.ArExplicit.ExternalBalanced.vertical_summand_natural line 31