| Spring, 2015: After Nantucket end of year, February blizzards and snow affected also teaching. Math E320, needing some online lecture. Since I teach 21b something about Eigenvalues. Jan 12: Graphs with Eulerian Unit spheres, in graphgeometry, mini blog.
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| Fall, 2014: I teach the Harvard Multivariable calculus course this fall. Advising Lunch Aug 27. Tracing walks of Jean Piaget and Georges de Rham during visit in Salmenfee. Oct 5: a graph geometry update: Curvature from Graph Colorings and some variational problems in graph theory. Dec 22: some work on graph coloring [ArXiv] with mini blog [HTML], illustration [HTML], animation [YouTube] and slides [YouTube], [PDF].
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| Summer, 2014: I teach the Summer 2014 multivariable course this summer (Summer syllabus [PDF]) and work on a HCRP project with research page, in geometric graph theory. Update to Cauchy-Binet with miniblog. About descriptive geometry. Summer splash.
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