Philosophy Lexicon of Arguments

 
Author Item Excerpt Meta data

 
Books on Amazon
I 48
Laws / rules / logic / Wessel: Law = tautology, with operators
I 50 Rules: statements about formulas (formulas themselves do not appear as formulas, but as quotations) = equivalences. "Equivalence" is not an operator.
I 345/46
Law / Wessel: always logical form of implication - (x) (P (x) > Q (x) - although not all true implications are laws - when a law has the form of an implication it cannot be a statement of the form Q (a) where a is an individual constant.


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Explanation of symbols: Roman numerals indicate the source, arabic numerals indicate the page number. The corresponding books are indicated on the right hand side. ((s)…): Comment by the sender of the contribution.

We I
H. Wessel
Logik Berlin 1999


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Ed. Martin Schulz, access date 2017-09-19