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Expansion for Modality

900 1. Philosophy
550 2. Reason
576 3. Truth
763 4. Formal Logic
1166 5. Theory of Logic
1139 6. Mathematics
926 7. Existence
839 8. Modes of Existence
1474 9. Objects

768 10. Modality
A. Necessity
8 1. Types of Modality
22 2. Nature of Necessity
26 3. Types of Necessity
14 4. De re / De dicto modality
29 5. Metaphysical Necessity
39 6. Logical Necessity
19 7. Natural Necessity
6 8. Transcendental Necessity
1 9. Normative Necessity
6 10. Impossibility
20 11. Denial of Necessity
B. Possibility
37 1. Possibility
3 2. Epistemic possibility
4 3. Combinatorial possibility
12 4. Potentiality
9 5. Contingency
14 6. Probability
9 7. Chance
11 8. Conditionals a. Conditionals
6 b. Types of conditional
24 c. Truth-function conditionals
15 d. Non-truthfunction conditionals
5 e. Supposition conditionals
6 f. Pragmatics of conditionals
21 9. Counterfactuals
C. Sources of Modality
28 1. Sources of Necessity
3 2. Necessity as Primitive
11 3. Necessity by Convention
11 4. Necessity from Concepts
15 5. Modality from Actuality
16 6. Necessity from Essence
D. Knowledge of Modality
19 1. A Priori Necessary
6 2. A Priori Contingent
10 3. A Posteriori Necessary
23 4. Conceivable as Possible a. Conceivable as possible
10 b. Conceivable but impossible
6 c. Possible but inconceivable
E. Possible worlds
31 1. Possible Worlds a. Possible worlds
8 b. Impossible worlds
13 c. Possible worlds realism
13 d. Possible worlds actualism
26 e. Against possible worlds
30 2. Nature of Possible Worlds a. Nature of possible worlds
8 b. Worlds as fictions
7 c. Worlds as propositions
30 3. Transworld Objects a. Transworld identity
22 b. Rigid designation
31 c. Counterparts
16 d. Haecceitism
9 e. Possible Objects

403 11. Knowledge Aims
631 12. Knowledge Sources
584 13. Knowledge Criteria
627 14. Science
472 15. Nature of Minds
424 16. Persons
474 17. Mind and Body
696 18. Thought
765 19. Language
210 20. Action
197 21. Aesthetics
726 22. Metaethics
824 23. Ethics
179 24. Applied Ethics
973 25. Society
934 26. Natural Theory
584 27. Natural Reality
393 28. God
267 29. Religion