Combining Texts

Ideas for 'works', 'Foundations without Foundationalism' and 'Carnap and Logical Truth'

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3 ideas

5. Theory of Logic / B. Logical Consequence / 1. Logical Consequence

13681

Logical consequence is marked by being preserved under all nonlogical substitutions [Quine, by Sider]

5. Theory of Logic / B. Logical Consequence / 4. Semantic Consequence |=

13626

Semantic consequence is ineffective in second-order logic [Shapiro]

13637

If a logic is incomplete, its semantic consequence relation is not effective [Shapiro]