5.51
If ξ has only one value, then N(ξ)=p (not p), if it has two values then N (ξ)=p.~q (neither p nor q).
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- 5.511 How can the all-embracing logic which mirrors the world use such special catches and manipulations?…
- 5.512 “~p” is true if “p” is false. Therefore in the true proposition “~p” “p” is a false proposition.…
- 5.513 We could say: What is common to all symbols, which assert both p and q, is the proposition “p.q”.…
- 5.514 If a notation is fixed, there is in it a rule according to which all the propositions denying p are…
- 5.515 It must be recognized in our symbols that what is connected by “∨”, “.”, etc., must be…