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Single Idea 10688

[filed under theme 4. Formal Logic / A. Syllogistic Logic / 2. Syllogistic Logic ]

Full Idea

'Equivocation' is when the terms do not mean the same thing in the premises and in the conclusion.

Gist of Idea

'Equivocation' is when terms do not mean the same thing in premises and conclusion

Source

JC Beall / G Restall (Logical Consequence [2005], Intro)

Book Ref

'Stanford Online Encyclopaedia of Philosophy', ed/tr. Stanford University [plato.stanford.edu], p.1


The 8 ideas from 'Logical Consequence'

'Equivocation' is when terms do not mean the same thing in premises and conclusion [Beall/Restall]
Formal logic is invariant under permutations, or devoid of content, or gives the norms for thought [Beall/Restall]
Logical consequence is either necessary truth preservation, or preservation based on interpretation [Beall/Restall]
A step is a 'material consequence' if we need contents as well as form [Beall/Restall]
Models are mathematical structures which interpret the non-logical primitives [Beall/Restall]
Hilbert proofs have simple rules and complex axioms, and natural deduction is the opposite [Beall/Restall]
Logical consequence needs either proofs, or absence of counterexamples [Beall/Restall]
A 'logical truth' (or 'tautology', or 'theorem') follows from empty premises [Beall/Restall]