Combining Philosophers
Ideas for Melvin Fitting, J Baggini / PS Fosl and Jonathan Barnes
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6 ideas
4. Formal Logic / B. Propositional Logic PL / 2. Tools of Propositional Logic / e. Axioms of PL
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'Natural' systems of deduction are based on normal rational practice, rather than on axioms [Baggini /Fosl]
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4631
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In ideal circumstances, an axiom should be such that no rational agent could possibly object to its use [Baggini /Fosl]
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4. Formal Logic / E. Nonclassical Logics / 8. Intensional Logic
15375
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If terms change their designations in different states, they are functions from states to objects [Fitting]
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15376
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Intensional logic adds a second type of quantification, over intensional objects, or individual concepts [Fitting]
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4. Formal Logic / E. Nonclassical Logics / 9. Awareness Logic
15378
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Awareness logic adds the restriction of an awareness function to epistemic logic [Fitting]
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4. Formal Logic / E. Nonclassical Logics / 10. Justification Logics
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Justication logics make explicit the reasons for mathematical truth in proofs [Fitting]
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