Dan H
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 Feb 25 revised Interpolation using barycentric coordinates of a triangle deleted 157 characters in body Feb 25 asked Interpolation using barycentric coordinates of a triangle Feb 24 revised What is the general name for a surface of form $z = f(x, y)$? added 389 characters in body Dec 23 comment How to put roughly equidistan points on the surface of a sphere, each with 4 neighbors? Now that I've added my "Option 3" (in my answer), I see you are describing the same thing with "pyramids on a cube". Dec 23 revised How to put roughly equidistan points on the surface of a sphere, each with 4 neighbors? added option 3 Dec 23 answered How to put roughly equidistan points on the surface of a sphere, each with 4 neighbors? Dec 23 awarded Student Dec 23 asked What is the general name for a surface of form $z = f(x, y)$? May 15 awarded Supporter Mar 16 awarded Teacher Mar 16 awarded Editor Mar 16 revised How can one efficiently generate n small relatively prime integers? added comment re: linear time Mar 16 answered How can one efficiently generate n small relatively prime integers?