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Ideas for '', 'On What There Is' and 'Oxford University Statutes'

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7 ideas

5. Theory of Logic / A. Overview of Logic / 1. Overview of Logic

11211

If a sound conclusion comes from two errors that cancel out, the path of the argument must matter [Rumfitt]

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

11210

Standardly 'and' and 'but' are held to have the same sense by having the same truth table [Rumfitt]

11212

The sense of a connective comes from primitively obvious rules of inference [Rumfitt]

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

1618	We study bound variables not to know reality, but to know what reality language asserts [Quine]

5. Theory of Logic / F. Referring in Logic / 1. Naming / f. Names eliminated

8455	Canonical notation needs quantification, variables and predicates, but not names [Quine, by Orenstein]

8456	Quine extended Russell's defining away of definite descriptions, to also define away names [Quine, by Orenstein]

5. Theory of Logic / F. Referring in Logic / 2. Descriptions / c. Theory of definite descriptions

1611	Names can be converted to descriptions, and Russell showed how to eliminate those [Quine]