Combining Texts

All the ideas for 'Through the Looking Glass', 'The Laws of Thought' and 'Anthropological Studies of Classification'

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9 ideas

4. Formal Logic / B. Propositional Logic PL / 1. Propositional Logic

8083	Boole applied normal algebra to logic, aiming at an algebra of thought [Boole, by Devlin]

7727	Boole's notation can represent syllogisms and propositional arguments, but not both at once [Boole, by Weiner]

5. Theory of Logic / A. Overview of Logic / 2. History of Logic

8686	Boole made logic more mathematical, with algebra, quantifiers and probability [Boole, by Friend]

5. Theory of Logic / H. Proof Systems / 2. Axiomatic Proof

22277

Boole's method was axiomatic, achieving economy, plus multiple interpretations [Boole, by Potter]

7. Existence / A. Nature of Existence / 3. Being / e. Being and nothing

21982

I only wish I had such eyes as to see Nobody! It's as much as I can do to see real people. [Carroll,L]

7. Existence / E. Categories / 1. Categories

10496

Monothetic categories have fixed defining features, and polythetic categories do not [Ellen]

10497

In symbolic classification, the categories are linked to rules [Ellen]

7. Existence / E. Categories / 5. Category Anti-Realism

10495

Continuous experience sometimes needs imposition of boundaries to create categories [Ellen]

13. Knowledge Criteria / E. Relativism / 4. Cultural relativism

10498

Classification is no longer held to be rooted in social institutions [Ellen]