Note 472 — Chapter I
Reading edition
This is pointed out by Schröder, Der Operationskreis des Logikkalkuls, p. 3. The two equivalences which are thus mutually deducible the one from the other may be said to be reciprocal.
Reading edition
This is pointed out by Schröder, Der Operationskreis des Logikkalkuls, p. 3. The two equivalences which are thus mutually deducible the one from the other may be said to be reciprocal.