Ideas from 'The Principles of Science' by William S. Jevons [1879], by Theme Structure

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6. Mathematics / C. Sources of Mathematics / 6. Logicism / a. Early logicism
I hold that algebra and number are developments of logic
                        Full Idea: I hold that algebra is a highly developed logic, and number but logical discrimination.
                        From: William S. Jevons (The Principles of Science [1879], p.156), quoted by Gottlob Frege - Grundlagen der Arithmetik (Foundations) 15
                        A reaction: Thus Frege shows that logicism was an idea that was in the air before he started writing. Riemann's geometry and Boole's logic presumably had some influence here.