| Fall, 2018: I teach Math 22a this fall (Catch 22!). More Summer photos (I), (II), (III). Eulerian Edge refinements, geodesics, billiards and sphere coloring [ArXiv], see also the blog entry on the Euler Game. In the Mathtable talk on Goldbach, showed also a clip from Fermat's room. Fall photos: (I), (II) with Bacow inauguration, (III). Cartan's Magic Formula [ArXiv]. Fall/Winter photos (IV) with khipus. (IV) with CS50 fair.
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| Summer, 2018: I teach Maths21a. New in graph geometry: the paper Combinatorial manifolds are Hamiltonian. See also the Blog entry or Slides. Summer photos (I). (II). (III). Something about creativity and computer algebra. Some fundamental theorems [PDF].
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| Spring, 2018: Math 21b (Canvas). Winter photos: I, II, and III. January photos (with Vermont): I, II, and III. Dyadic zeta [ArXiv] with Blog. Hear cohomology [ArXiv]. Euler's day 2/7/18: [PDF], Talk [Youtube], Slides [Youtube]. Hydrogen [ArXiv]. AMS Apr 21-22, Notes [PDF] slides and cohomology. Summer 2018. Syntax Spring photos I, II, III.
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| Fall, 2017: I teach Math 21a Multivariable calculus (Canvas) and Teaching Math with a historical perspective (Canvas). ArXiv: "The strong ring" and as a follow up: discrete Atiyah-Singer (and blog entry), for graph geometry. Travel photos: I, II, III. Energy of a complex. Chandra (1920-2017). Fall photos: I, II, III, IV. One can hear the Euler characteristic of a complex [ArXiv].
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