Rename _11 and _12 into _1_1 and _1_2, respectively. These suffixes are used for A → B1 and A → B2 variants of A ↔ B1 ∧ B2 lemmas.
The previous suffixes looked like lemma number 11 and 12, respectively.
Rename _11 and _12 into _1_1 and _1_2, respectively. These suffixes are used for A → B1 and A → B2 variants of A ↔ B1 ∧ B2 lemmas.
The previous suffixes looked like lemma number 11 and 12, respectively.