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Fall 2020 M*A*T*H Colloquium Presents: “The Poincaré Disk and the Hyperquilt: Easing into models of the hyperbolic plane”

  • Darwin 103 or ZOOM 1801 E Cotati Ave Rohnert Park, CA, 94928 United States (map)

In hyperbolic geometry, given line l and point p not on line l, there exist multiple lines through point p parallel to line l. Wait, what? This can be challenging to model or even to imagine; mathematician Giovanni Girolamo Saccheri, after rigorous investigation, stated this to be "repugnant to the nature of straight lines." In this talk, we will briefly take stock of how we visualize Euclidean plane geometry, vanishing points, and spherical geometry, and then attempt to slide from there into visualizing models of hyperbolic geometry, starting with a partial model in the form of a homemade patchwork quilt, and moving to the Poincaré Disk model.

Earlier Event: November 16
Medieval Feast ft. Game of Thrones
Later Event: November 16
InMotion Jazzercise