Results 101 to 110 of about 5,768 (184)

The hardness of the iconic must: Can Peirce’s existential graphs assist modal epistemology? [PDF]

open access: yes, 2009
The current of development in 20th century logic bypassed Peirce’s existential graphs, but recently much good work has been done by formal logicians excavating the graphs from Peirce’s manuscripts, regularizing them and demonstrating the soundness and ...
Legg, Catherine
core   +1 more source

AE (Aristotle-Euler) Diagrams: An Alternative Complete Method for the Categorical Syllogism

open access: yesNotre Dame Journal of Formal Logic, 1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

A cylindrical Venn diagram model for categorical syllogisms

open access: yes, 2018
One denotes A(M,*) by A1 and A(*,M) by A2, where * stands for either S or P, and the same for the O categorical operator. This allows to dispense with the four syllogistic figures and reduces the number of the 24 classically valid syllogisms (CVS) to only 8 (not 15) distinct CVS plus 6 (not 9) distinct existential import (ei) CVS. Out of the 36 (not 64!
openaire   +3 more sources

About the set theory model of categorical syllogisms

open access: yes, 2019
The Set Theoretical Model (STM) of categorical syllogisms was initially developed by George Boole and Lewis Carroll, who worked with a “universe of discourse”, U, which contains the pairwise complementary sets, or categorical terms, S,S'(non-S),P,P'(non-P),M,M'(non-M), and is thus partitioned into 8 subsets: SPM:=S∩P∩M, S'PM,...,S'P'M'. As George Boole
openaire   +3 more sources

Verbal Reasoning Impairment in Parkinson's Disease. [PDF]

open access: yesBehav Neurol, 2022
Luca A   +8 more
europepmc   +1 more source

An extension of valid syllogisms to valid categorical arguments

open access: yes, 2019
One presents the Set Theory Model (STM) of the valid categorical arguments (VCAs) as an improvement on the Classic Categorical Syllogistic (CCS) approach to the valid (categorical) syllogisms (VS) – a proper subset of the VCAs. The STM was initially developed by George Boole and Lewis Carroll, who worked with a “universe of discourse”, U, which ...
openaire   +3 more sources

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