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'What is Logic?st1=Ian Hacking', 'Identity and Essence' and 'When Does a Life Begin?'
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5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / a. Logical connectives
13837
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With a pure notion of truth and consequence, the meanings of connectives are fixed syntactically [Hacking]
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5. Theory of Logic / E. Structures of Logic / 4. Variables in Logic
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Perhaps variables could be dispensed with, by arrows joining places in the scope of quantifiers [Hacking]
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