Combining Philosophers
Ideas for Anaxarchus, Michael V. Wedin and Theodore Sider
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3 ideas
5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / a. Logical connectives
15019
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Define logical constants by role in proofs, or as fixed in meaning, or as topic-neutral [Sider]
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5. Theory of Logic / E. Structures of Logic / 4. Variables in Logic
13696
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When a variable is 'free' of the quantifier, the result seems incapable of truth or falsity [Sider]
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5. Theory of Logic / E. Structures of Logic / 5. Functions in Logic
13700
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A 'total' function must always produce an output for a given domain [Sider]
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