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Ideas for 'Works of Love', 'Beginning Logic' and 'Second Philosophy'

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2 ideas

5. Theory of Logic / A. Overview of Logic / 7. Second-Order Logic

10594

Henkin semantics is more plausible for plural logic than for second-order logic [Maddy]

5. Theory of Logic / B. Logical Consequence / 8. Material Implication

9520	The paradoxes of material implication are P |- Q → P, and ¬P |- P → Q [Lemmon]