Combining Philosophers
Ideas for Rescher,N/Oppenheim,P, Ludwig Wittgenstein and Jean Calvin
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9 ideas
5. Theory of Logic / E. Structures of Logic / 1. Logical Form
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18268
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Apparent logical form may not be real logical form [Wittgenstein]
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18276
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A statement's logical form derives entirely from its constituents [Wittgenstein]
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18743
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Wittgenstein says we want the grammar of problems, not their first-order logical structure [Wittgenstein, by Horsten/Pettigrew]
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5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / a. Logical connectives
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10905
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My fundamental idea is that the 'logical constants' do not represent [Wittgenstein]
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6563
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'And' and 'not' are non-referring terms, which do not represent anything [Wittgenstein, by Fogelin]
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5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / c. not
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23493
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'Not' isn't an object, because not-not-p would then differ from p [Wittgenstein]
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18723
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We may correctly use 'not' without making the rule explicit [Wittgenstein]
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5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / d. and
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18718
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Saying 'and' has meaning is just saying it works in a sentence [Wittgenstein]
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5. Theory of Logic / E. Structures of Logic / 4. Variables in Logic
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7784
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'Object' is a pseudo-concept, properly indicated in logic by the variable x [Wittgenstein]
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