The definition: A spherical neighborhood of a point is itself open-a-Euclidean Space in one dimension is a finite interval-Euclidean in two dimensions is a circle and Euclidean in 3-Dimensions and spheres- The blog looks the sphere in Euclidean-Geometry, non-Euclidean geometry, like sphere in a sphere or hyperbole for example, using differential geometry, topology and algebraic topology
Tuesday, December 29, 2020
Tuesday, November 24, 2020
Thursday, October 22, 2020
Sunday, September 20, 2020
Saturday, August 22, 2020
Saturday, July 18, 2020
Sunday, June 7, 2020
Saturday, May 9, 2020
Sunday, April 19, 2020
Sunday, March 1, 2020
Wednesday, February 12, 2020
Saturday, January 18, 2020
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