Combining Texts
Ideas for
'fragments/reports', 'The Sophist' and 'Grundlagen der Arithmetik (Foundations)'
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14 ideas
7. Existence / A. Nature of Existence / 1. Nature of Existence
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8643
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Affirmation of existence is just denial of zero [Frege]
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7. Existence / A. Nature of Existence / 3. Being / d. Non-being
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11278
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What does 'that which is not' refer to? [Plato]
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7. Existence / A. Nature of Existence / 3. Being / e. Being and nothing
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1643
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If statements about non-existence are logically puzzling, so are statements about existence [Plato]
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7. Existence / A. Nature of Existence / 4. Abstract Existence
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8911
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If abstracta are non-mental, quarks are abstracta, and yet chess and God's thoughts are mental [Rosen on Frege]
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8634
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The equator is imaginary, but not fictitious; thought is needed to recognise it [Frege]
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7. Existence / A. Nature of Existence / 6. Criterion for Existence
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7022
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To be is to have a capacity, to act on other things, or to receive actions [Plato]
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7. Existence / C. Structure of Existence / 4. Ontological Dependence
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17443
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Many of us find Frege's claim that truths depend on one another an obscure idea [Heck on Frege]
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17445
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Parallelism is intuitive, so it is more fundamental than sameness of direction [Frege, by Heck]
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7. Existence / C. Structure of Existence / 7. Abstract/Concrete / a. Abstract/concrete
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10539
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Frege refers to 'concrete' objects, but they are no different in principle from abstract ones [Frege, by Dummett]
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7. Existence / D. Theories of Reality / 6. Physicalism
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1641
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Some alarming thinkers think that only things which you can touch exist [Plato]
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7. Existence / D. Theories of Reality / 10. Vagueness / d. Vagueness as linguistic
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17431
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Vagueness is incomplete definition [Frege, by Koslicki]
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7. Existence / D. Theories of Reality / 11. Ontological Commitment / a. Ontological commitment
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10784
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Whenever there's speech it has to be about something [Plato]
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13879
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For Frege, ontological questions are to be settled by reference to syntactic structures [Frege, by Wright,C]
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7. Existence / D. Theories of Reality / 11. Ontological Commitment / c. Commitment of predicates
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10642
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Second-order quantifiers are committed to concepts, as first-order commits to objects [Frege, by Linnebo]
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