Combining Philosophers
Ideas for Friedrich Schlegel, Hilary Putnam and ZoltÃƒÆ’Ã‚Â¡n Gendler SzabÃƒÆ’Ã‚Â³
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10 ideas
5. Theory of Logic / A. Overview of Logic / 2. History of Logic
18954

Before the late 19th century logic was trivialised by not dealing with relations [Putnam]

5. Theory of Logic / A. Overview of Logic / 5. FirstOrder Logic
18956

Asserting firstorder validity implicitly involves secondorder reference to classes [Putnam]

5. Theory of Logic / C. Ontology of Logic / 1. Ontology of Logic
18962

Unfashionably, I think logic has an empirical foundation [Putnam]

5. Theory of Logic / C. Ontology of Logic / 3. IfThenism
10066

Putnam coined the term 'ifthenism' [Putnam, by Musgrave]

5. Theory of Logic / E. Structures of Logic / 5. Functions in Logic
18961

We can identify functions with certain sets  or identify sets with certain functions [Putnam]

5. Theory of Logic / F. Referring in Logic / 1. Naming / a. Names
17505

Using proper names properly doesn't involve necessary and sufficient conditions [Putnam]

5. Theory of Logic / I. Semantics of Logic / 3. Logical Truth
18955

Having a valid form doesn't ensure truth, as it may be meaningless [Putnam]

5. Theory of Logic / I. Semantics of Logic / 6. Intensionalism
14203

Intension is not meaning, as 'cube' and 'squarefaced polyhedron' are intensionally the same [Putnam]

5. Theory of Logic / J. Model Theory in Logic / 2. Isomorphisms
14207

If cats equal cherries, model theory allows reinterpretation of the whole language preserving truth [Putnam]

5. Theory of Logic / J. Model Theory in Logic / 3. LöwenheimSkolem Theorems
9913

The LöwenheimSkolem Theorem is close to an antinomy in philosophy of language [Putnam]
