Combining Philosophers
Ideas for Lynch,MP/Glasgow,JM, Keith Devlin and Georg W.F.Hegel
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11 ideas
5. Theory of Logic / A. Overview of Logic / 1. Overview of Logic
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8091
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Situation theory is logic that takes account of context [Devlin]
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5. Theory of Logic / A. Overview of Logic / 2. History of Logic
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8087
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Golden ages: 1900-1960 for pure logic, and 1950-1985 for applied logic [Devlin]
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8089
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Montague's intensional logic incorporated the notion of meaning [Devlin]
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5. Theory of Logic / B. Logical Consequence / 7. Strict Implication
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8082
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Where a conditional is purely formal, an implication implies a link between premise and conclusion [Devlin]
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5. Theory of Logic / D. Assumptions for Logic / 2. Excluded Middle
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21595
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Excluded middle is the maxim of definite understanding, but just produces contradictions [Hegel]
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5. Theory of Logic / E. Structures of Logic / 1. Logical Form
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8072
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Sentences of apparent identical form can have different contextual meanings [Devlin]
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5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / c. not
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21777
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Negation of negation doubles back into a self-relationship [Hegel, by Houlgate]
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5. Theory of Logic / L. Paradox / 3. Antinomies
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15628
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The idea that contradiction is essential to rational understanding is a key modern idea [Hegel]
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15629
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Tenderness for the world solves the antinomies; contradiction is in our reason, not in the essence of the world [Hegel]
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15630
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Antinomies are not just in four objects, but in all objects, all representations, all objects and all ideas [Hegel]
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5. Theory of Logic / L. Paradox / 4. Paradoxes in Logic / a. Achilles paradox
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8075
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Space and time are atomic in the arrow, and divisible in the tortoise [Devlin]
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