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'fragments/reports', 'Thinking About Logic' and 'Introduction to Mathematical Logic'
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6 ideas
5. Theory of Logic / K. Features of Logics / 1. Axiomatisation
17761
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A compact axiomatisation makes it possible to understand a field as a whole [Walicki]
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17763
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Axiomatic systems are purely syntactic, and do not presuppose any interpretation [Walicki]
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5. Theory of Logic / K. Features of Logics / 6. Compactness
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Compactness is when any consequence of infinite propositions is the consequence of a finite subset [Read]
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10975
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Compactness does not deny that an inference can have infinitely many premisses [Read]
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Compactness blocks the proof of 'for every n, A(n)' (as the proof would be infinite) [Read]
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Compactness makes consequence manageable, but restricts expressive power [Read]
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