Combining Philosophers
Ideas for Marga Reimer, Jan Westerhoff and Gottlob Frege
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17 ideas
18. Thought / E. Abstraction / 1. Abstract Thought
9846
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Defining 'direction' by parallelism doesn't tell you whether direction is a line [Dummett on Frege]
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18. Thought / E. Abstraction / 2. Abstracta by Selection
9976
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Frege accepts abstraction to the concept of all sets equipollent to a given one [Tait on Frege]
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18. Thought / E. Abstraction / 3. Abstracta by Ignoring
10803
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Frege himself abstracts away from tone and color [Yablo on Frege]
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9988
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If we abstract 'from' two cats, the units are not black or white, or cats [Tait on Frege]
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9579
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Disregarding properties of two cats still leaves different objects, but what is now the difference? [Frege]
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9587
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How do you find the right level of inattention; you eliminate too many or too few characteristics [Frege]
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9890
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The modern account of real numbers detaches a ratio from its geometrical origins [Frege]
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18. Thought / E. Abstraction / 7. Abstracta by Equivalence
9855
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Frege's logical abstaction identifies a common feature as the maximal set of equivalent objects [Frege, by Dummett]
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10802
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Frege's 'parallel' and 'direction' don't have the same content, as we grasp 'parallel' first [Yablo on Frege]
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10525
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Frege put the idea of abstraction on a rigorous footing [Frege, by Fine,K]
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10526
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Fregean abstraction creates concepts which are equivalences between initial items [Frege, by Fine,K]
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10556
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We create new abstract concepts by carving up the content in a different way [Frege]
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9882
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You can't simultaneously fix the truth-conditions of a sentence and the domain of its variables [Dummett on Frege]
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9881
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From basing 'parallel' on identity of direction, Frege got all abstractions from identity statements [Frege, by Dummett]
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18. Thought / E. Abstraction / 8. Abstractionism Critique
5816
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Frege said concepts were abstract entities, not mental entities [Frege, by Putnam]
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9588
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Number-abstraction somehow makes things identical without changing them! [Frege]
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11846
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If we abstract the difference between two houses, they don't become the same house [Frege]
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