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JOURNALS // Matematicheskie Zametki // Archive
Mat. Zametki, 1993 Volume 53, Issue 3, Pages 23–28 (Mi mzm3967)
Some properties of deducibility operators

A. N. Degtev

Tyumen State University

Received: 24.12.1991


 English version: Mathematical Notes, 1993, 53:3, 259–262

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© Steklov Math. Inst. of RAS, 2026