Combining Texts

Ideas for 'Metaphysics', 'Letters to Leibniz' and 'Penguin Dictionary of Philosophy'

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23 ideas

5. Theory of Logic / B. Logical Consequence / 6. Entailment
6877 Entailment is logical requirement; it may be not(p and not-q), but that has problems [Mautner]
5. Theory of Logic / B. Logical Consequence / 7. Strict Implication
6880 Strict implication says false propositions imply everything, and everything implies true propositions [Mautner]
5. Theory of Logic / B. Logical Consequence / 8. Material Implication
6879 'Material implication' is defined as 'not(p and not-q)', but seems to imply a connection between p and q [Mautner]
6878 A person who 'infers' draws the conclusion, but a person who 'implies' leaves it to the audience [Mautner]
5. Theory of Logic / D. Assumptions for Logic / 1. Bivalence
22154 For Aristotle bivalence is a feature of reality [Aristotle, by Boulter]
6889 Vagueness seems to be inconsistent with the view that every proposition is true or false [Mautner]
5. Theory of Logic / G. Quantification / 1. Quantification
6890 Quantifiers turn an open sentence into one to which a truth-value can be assigned [Mautner]
5. Theory of Logic / L. Paradox / 2. Aporiai
11264 Aporia 3: Does one science investigate all being, or does each kind of being have a science? [Aristotle, by Politis]
11258 We must start with our puzzles, and progress by solving them, as they reveal the real difficulty [Aristotle]
11265 Aporia 4: Does metaphysics just investigate pure being, or also the characteristics of being? [Aristotle, by Politis]
11262 Aporia 1: is there one science of explanation, or many? [Aristotle, by Politis]
11263 Aporia 2: Does one science investigate both ultimate and basic principles of being? [Aristotle, by Politis]
11266 Aporia 5: Do other things exist besides what is perceptible by the senses? [Aristotle, by Politis]
11270 Aporia 9: Is there one principle, or one kind of principle? [Aristotle, by Politis]
11267 Aporia 6: Are the basic principles of a thing the kinds to which it belongs, or its components? [Aristotle, by Politis]
11268 Aporia 7: Is a thing's kind the most general one, or the most specific one? [Aristotle, by Politis]
11269 Aporia 8: Are there general kinds, or merely particulars? [Aristotle, by Politis]
11271 Aporia 10: Do perishables and imperishables have the same principle? [Aristotle, by Politis]
11272 Aporia 11: Are primary being and unity distinct, or only in the things that are? [Aristotle, by Politis]
11273 Aporia 12: Do mathematical entities exist independently, or only in objects? [Aristotle, by Politis]
11274 Aporia 13: Are there kinds, as well as particulars and mathematical entities? [Aristotle, by Politis]
11276 Aporia 15: Are the causes of things universals or particulars? [Aristotle, by Politis]
11275 Aporia 14: Are ultimate causes of things potentialities, or must they be actual? [Aristotle, by Politis]