Combining Philosophers

Ideas for Jerry A. Fodor, Theodore Sider and Howard Robinson

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4 ideas

5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / a. Logical connectives

15019

Define logical constants by role in proofs, or as fixed in meaning, or as topic-neutral [Sider]

5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / d. and

12664

A truth-table, not inferential role, defines 'and' [Fodor]

5. Theory of Logic / E. Structures of Logic / 4. Variables in Logic

13696

When a variable is 'free' of the quantifier, the result seems incapable of truth or falsity [Sider]

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

13700

A 'total' function must always produce an output for a given domain [Sider]