<math>\forall A\exists B</math> B<math>\subseteq</math> A = <math>\exists B\forall A</math> B<math>\subseteq</math> A
User talk:Steeefan
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2401:4900:1F2A:8FFF:0:0:19A:5EFE • 8 days ago
Harsharose • 9 days ago
Harsharose • 14 days ago
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