Combining Texts

All the ideas for 'Content Preservation', 'Logical Consequence' and 'Substance'

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23 ideas

5. Theory of Logic / B. Logical Consequence / 1. Logical Consequence
18755 Validity is explained as truth in all models, because that relies on the logical terms [McGee]
5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / a. Logical connectives
18751 Natural language includes connectives like 'because' which are not truth-functional [McGee]
5. Theory of Logic / G. Quantification / 5. Second-Order Quantification
18761 Second-order variables need to range over more than collections of first-order objects [McGee]
5. Theory of Logic / I. Semantics of Logic / 1. Semantics of Logic
18753 An ontologically secure semantics for predicate calculus relies on sets [McGee]
5. Theory of Logic / I. Semantics of Logic / 3. Logical Truth
18754 Logically valid sentences are analytic truths which are just true because of their logical words [McGee]
5. Theory of Logic / K. Features of Logics / 3. Soundness
18757 Soundness theorems are uninformative, because they rely on soundness in their proofs [McGee]
6. Mathematics / B. Foundations for Mathematics / 3. Axioms for Geometry
18760 The culmination of Euclidean geometry was axioms that made all models isomorphic [McGee]
8. Modes of Existence / A. Relations / 4. Formal Relations / c. Ancestral relation
12056 An ancestral relation is either direct or transitively indirect [Wiggins]
8. Modes of Existence / C. Powers and Dispositions / 4. Powers as Essence
12050 Substances contain a source of change or principle of activity [Wiggins]
9. Objects / A. Existence of Objects / 5. Individuation / e. Individuation by kind
12052 We never single out just 'this', but always 'this something-or-other' [Wiggins]
12055 Sortal predications are answers to the question 'what is x?' [Wiggins]
12059 A river may change constantly, but not in respect of being a river [Wiggins]
12063 Sortal classification becomes science, with cross reference clarifying individuals [Wiggins]
12051 If the kinds are divided realistically, they fall into substances [Wiggins]
12053 'Human being' is a better answer to 'what is it?' than 'poet', as the latter comes in degrees [Wiggins]
12054 Secondary substances correctly divide primary substances by activity-principles and relations [Wiggins]
9. Objects / B. Unity of Objects / 2. Substance / d. Substance defined
12047 We refer to persisting substances, in perception and in thought, and they aid understanding [Wiggins]
9. Objects / C. Structure of Objects / 3. Matter of an Object
12057 Matter underlies things, composes things, and brings them to be [Wiggins]
13. Knowledge Criteria / C. External Justification / 1. External Justification
9382 Subjects may be unaware of their epistemic 'entitlements', unlike their 'justifications' [Burge]
14. Science / D. Explanation / 2. Types of Explanation / k. Explanations by essence
12064 The category of substance is more important for epistemology than for ontology [Wiggins]
12049 Naming the secondary substance provides a mass of general information [Wiggins]
15. Nature of Minds / C. Capacities of Minds / 4. Objectification
12065 Seeing a group of soldiers as an army is irresistible, in ontology and explanation [Wiggins]
19. Language / F. Communication / 2. Assertion
18762 A maxim claims that if we are allowed to assert a sentence, that means it must be true [McGee]