Combining Philosophers

Ideas for Archimedes, Robert Hanna and Leon Horsten

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2 ideas

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

11061

Intensional consequence is based on the content of the concepts [Hanna]

5. Theory of Logic / B. Logical Consequence / 5. Modus Ponens

15341

Deduction Theorem: ψ only derivable from φ iff φ→ψ are axioms [Horsten]