| Summer, 2022: Math S 21a, Summer 2022 Spectra of Kirchhoff Laplacian, Tree-Forest Ratio, Graphs, Groups and Geometry, Babylonian graph. Summer travels 2022.
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| Spring, 2022: I teach Math 22b Analysis and Math E-320 Math with a Historical Perspective. Upper level coordination. Some pictures from Martha's Vineyard winter break. About analytic torsion ArXiv. Summer 2022 Website.
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| Fall, 2021: I'm teaching a section in Math 1b this fall. Updates on Graph geometry. Some work in progress [PDF]. Some pictures December 2021.
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| Summer, 2021: Maths21a. Graph arithmetic[ArXIv], Coloring manifolds [ArXiv], Curvature of products [ArXiv], Chess, DNA etc. (ArXiv). Recent Videos.
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