Combining Texts

All the ideas for 'Intuitionism: an Introduction', 'works' and 'Mathematics without Foundations'

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8 ideas

4. Formal Logic / E. Nonclassical Logics / 5. Relevant Logic

8720	A logic is 'relevant' if premise and conclusion are connected, and 'paraconsistent' allows contradictions [Priest,G, by Friend]

4. Formal Logic / F. Set Theory ST / 3. Types of Set / d. Infinite Sets

9944	We understand some statements about all sets [Putnam]

6. Mathematics / B. Foundations for Mathematics / 1. Foundations for Mathematics

9937	I do not believe mathematics either has or needs 'foundations' [Putnam]

6. Mathematics / B. Foundations for Mathematics / 4. Axioms for Number / a. Axioms for numbers

9939	It is conceivable that the axioms of arithmetic or propositional logic might be changed [Putnam]

6. Mathematics / C. Sources of Mathematics / 4. Mathematical Empiricism / a. Mathematical empiricism

9940	Maybe mathematics is empirical in that we could try to change it [Putnam]

6. Mathematics / C. Sources of Mathematics / 4. Mathematical Empiricism / b. Indispensability of mathematics

9941	Science requires more than consistency of mathematics [Putnam]

6. Mathematics / C. Sources of Mathematics / 6. Logicism / d. Logicism critique

8754	Logic is dependent on mathematics, not the other way round [Heyting, by Shapiro]

7. Existence / D. Theories of Reality / 4. Anti-realism

9943	You can't deny a hypothesis a truth-value simply because we may never know it! [Putnam]