Formal Logic

Keyword: Formal Logic

Dictionary Entry | Posted 11/08/2017
Quote from "Material Logic"

Formal logic classifies arguments by producing forms in which, the letters of the alphabet being replaced by any terms whatever, the result will be a valid, probable, or sophistic argument, as the...

Dictionary Entry | Posted 04/05/2015
Quote from "Philosophy in the Light of the Logic of Relatives"

Formal logic is mathematics; it is the most abstract branch of mathematics. But no other logic is called for in pure mathematics.

Dictionary Entry | Posted 04/05/2015
Quote from "Minute Logic: Chapter III. The Simplest Mathematics"

Mathematical logic is formal logic. Formal logic, however developed, is mathematics. Formal logic, however, is by no means the whole of logic, or even its principal part. It is hardly to be...

Manuscript | Posted 04/05/2015
Peirce, Charles S. (nd). Philosophy in the Light of the Logic of Relatives. MS [R] 1336

Robin Catalogue:
A. MS., n.p., n.d., pp. 1-13, unfinished.
Classification of the sciences. Some of the ways in which CSP’s classification differs from Comte’s. The relationship...