John Smith
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 Mar22 revised Is there Mathematical discipline that treats mathematical logic, axioms and relations as one big mathematical object? TeXify some of the content Mar22 suggested approved edit on Is there Mathematical discipline that treats mathematical logic, axioms and relations as one big mathematical object? Mar21 accepted Geometry of Pythagorean triples on the unit circle Mar21 asked Geometry of Pythagorean triples on the unit circle Feb11 comment Differentiable function for which the tangent at each point has infinitely many common points with the graph @larry01 how about rephrasing to countably infinitely many points? Oct26 awarded Yearling Sep13 awarded Good Question Aug31 comment The Shortest Distance Between 2 Points On The Earth @xavierm02 It's not obvious to me that fixing one of the points does not change the uniform distribution of the other point, or perhaps I'm just not seeing it. Can you explain? Aug19 accepted Lights out game on hexagonal grid Aug19 accepted Proof and software Aug19 accepted Enumerating necklaces Aug19 accepted Stochastic/finance monte carlo question Aug11 awarded Favorite Question Aug11 comment Logic behind dividing negative numbers I most definitely disagree with the first two sentences. Mathematics is not a game of symbols. It should have a concrete foundation and it is good that the original questioner is trying to give meaning to the abstract notion of division. Jul16 awarded Notable Question Jul2 awarded Curious Jun9 accepted Area of projected surface Jun9 comment Area of projected surface The area is still correct. Jun9 comment Area of projected surface I'm looking at the part you just added and I am not seeing the parallelogram. Instead I see a curve $z=x^2$ on the bottom of the "parallelogram" for example, and $z=x^2+4$ for the top. Jun8 asked Area of projected surface