Combining Texts

All the ideas for 'Set Theory and related topics (2nd ed)', 'On Aristotle's 'Metaphysics'' and 'Human Freedom and Divine choice'

expand these ideas     |    start again     |     specify just one area for these texts

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3 ideas

4. Formal Logic / F. Set Theory ST / 3. Types of Set / e. Equivalence classes

8920	Equivalence relations are reflexive, symmetric and transitive, and classify similar objects [Lipschutz]

7. Existence / E. Categories / 4. Category Realism

16655

Different genera are delimited by modes of predication, which rest on modes of being [Aquinas]

9. Objects / D. Essence of Objects / 7. Essence and Necessity / a. Essence as necessary properties

13083

The essence is the necessary properties, and the concept includes what is contingent [Leibniz]