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