Combining Texts

All the ideas for 'Intensional Logic', 'Frege' and 'Introduction to 'Evidentialism''

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10 ideas

4. Formal Logic / B. Propositional Logic PL / 1. Propositional Logic

7726	Aristotelian logic dealt with inferences about concepts, and there were also proposition inferences [Weiner]

4. Formal Logic / E. Nonclassical Logics / 8. Intensional Logic

15375

If terms change their designations in different states, they are functions from states to objects [Fitting]

15376

Intensional logic adds a second type of quantification, over intensional objects, or individual concepts [Fitting]

4. Formal Logic / E. Nonclassical Logics / 9. Awareness Logic

15378

Awareness logic adds the restriction of an awareness function to epistemic logic [Fitting]

4. Formal Logic / E. Nonclassical Logics / 10. Justification Logics

15379

Justication logics make explicit the reasons for mathematical truth in proofs [Fitting]

5. Theory of Logic / A. Overview of Logic / 8. Logic of Mathematics

11026

Classical logic is deliberately extensional, in order to model mathematics [Fitting]

5. Theory of Logic / F. Referring in Logic / 3. Property (λ-) Abstraction

11028

λ-abstraction disambiguates the scope of modal operators [Fitting]

10. Modality / E. Possible worlds / 3. Transworld Objects / a. Transworld identity

15377

Definite descriptions pick out different objects in different possible worlds [Fitting]

13. Knowledge Criteria / B. Internal Justification / 3. Evidentialism / b. Evidentialism

19518

Evidentialism says justifications supervene on the available evidence [Conee/Feldman]

20. Action / C. Motives for Action / 3. Acting on Reason / c. Reasons as causes

19519

Rational decisions are either taken to be based on evidence, or to be explained causally [Conee/Feldman]