Introduction Part I. Discourse on Thinking: 1. Puzzling about (mathematical) thinking 2. Objectification 3. Commognition: thinking as communicating 4. Thinking in language Part II. Mathematics as Discourse: 5. Mathematics as a form of communication 6. Objects of mathematical discourse: what mathematizing is all about 7. Routines: how we mathematize 8. Explorations, deeds, and rituals: what we mathematize for 9. Looking back and ahead: solving old quandaries and facing new ones.
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