Combining Philosophers

All the ideas for Hermarchus, Avicenna (Abu Ibn Sina) and Dag Prawitz

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10 ideas

1. Philosophy / E. Nature of Metaphysics / 1. Nature of Metaphysics

11193

Understanding begins with the notion of being and essence [Avicenna]

5. Theory of Logic / A. Overview of Logic / 1. Overview of Logic

13831

Logic is based on transitions between sentences [Prawitz]

5. Theory of Logic / B. Logical Consequence / 1. Logical Consequence

13827

Logical consequence isn't a black box (Tarski's approach); we should explain how arguments work [Prawitz]

5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / a. Logical connectives

13825

Natural deduction introduction rules may represent 'definitions' of logical connectives [Prawitz]

5. Theory of Logic / H. Proof Systems / 4. Natural Deduction

13823

In natural deduction, inferences are atomic steps involving just one logical constant [Prawitz]

5. Theory of Logic / J. Model Theory in Logic / 1. Logical Models

13826

Model theory looks at valid sentences and consequence, but not how we know these things [Prawitz]

9. Objects / A. Existence of Objects / 5. Simples

11209

The simple's whatness is its very self [Avicenna]

9. Objects / C. Structure of Objects / 3. Matter of an Object

11204

The ultimate material of things has the unity of total formlessness [Avicenna]

9. Objects / D. Essence of Objects / 2. Types of Essence

15036

An essence can either be universal (in the mind) or singular (in concrete particulars) [Avicenna, by Panaccio]

25. Social Practice / F. Life Issues / 6. Animal Rights

6005	Animals are dangerous and nourishing, and can't form contracts of justice [Hermarchus, by Sedley]