Combining Texts

All the ideas for 'Logical Consequence', 'The Problem of the Essential Indexical' and 'Introduction to German Philosophy'

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18 ideas

2. Reason / A. Nature of Reason / 1. On Reason
20955 Art can make reason more all-inclusive, by articulating what seemed inexpressible [Bowie]
4. Formal Logic / A. Syllogistic Logic / 2. Syllogistic Logic
10688 'Equivocation' is when terms do not mean the same thing in premises and conclusion [Beall/Restall]
5. Theory of Logic / A. Overview of Logic / 4. Pure Logic
10690 Formal logic is invariant under permutations, or devoid of content, or gives the norms for thought [Beall/Restall]
5. Theory of Logic / B. Logical Consequence / 2. Types of Consequence
10691 Logical consequence needs either proofs, or absence of counterexamples [Beall/Restall]
5. Theory of Logic / B. Logical Consequence / 4. Semantic Consequence |=
10695 Logical consequence is either necessary truth preservation, or preservation based on interpretation [Beall/Restall]
5. Theory of Logic / B. Logical Consequence / 8. Material Implication
10689 A step is a 'material consequence' if we need contents as well as form [Beall/Restall]
5. Theory of Logic / I. Semantics of Logic / 3. Logical Truth
10696 A 'logical truth' (or 'tautology', or 'theorem') follows from empty premises [Beall/Restall]
5. Theory of Logic / J. Model Theory in Logic / 1. Logical Models
10693 Models are mathematical structures which interpret the non-logical primitives [Beall/Restall]
6. Mathematics / B. Foundations for Mathematics / 2. Proof in Mathematics
10692 Hilbert proofs have simple rules and complex axioms, and natural deduction is the opposite [Beall/Restall]
11. Knowledge Aims / A. Knowledge / 4. Belief / b. Elements of beliefs
12149 Indexicals are a problem for beliefs being just subject-proposition relations [Perry]
11. Knowledge Aims / C. Knowing Reality / 3. Idealism / d. Absolute idealism
20950 German Idealism says our thinking and nature have the same rational structure [Bowie]
16. Persons / E. Rejecting the Self / 2. Self as Social Construct
20942 Nazis think race predetermines the self [Bowie]
19. Language / C. Assigning Meanings / 9. Indexical Semantics
12151 If we replace 'I' in sentences about me, they are different beliefs and explanations of behaviour [Perry]
18412 Indexicals individuate certain belief states, helping in explanation and prediction [Perry]
19. Language / D. Propositions / 6. Propositions Critique
12150 Indexicals reveal big problems with the traditional idea of a proposition [Perry]
19. Language / F. Communication / 1. Rhetoric
20946 Rhetoric is built into language, so it cannot be stripped from philosophy [Bowie]
27. Natural Reality / D. Time / 2. Passage of Time / c. Tenses and time
15203 Tense is essential for thought and action [Perry, by Le Poidevin]
15204 Actual tensed sentences cannot be tenseless, because they can cite their own context [Perry, by Le Poidevin]