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 Apr 4 answered Four color theorem for volume. Apr 1 asked Second derivatives of rotations Mar 13 revised Bessel's Inequality simplification Changed typo in title Mar 13 suggested approved edit on Bessel's Inequality simplification Feb 27 answered Minimization on the Lie Group SO(3) Dec 6 asked Out of plane cross section evolution of surfaces based on local geometry information Jul 2 awarded Curious Oct 21 awarded Scholar Oct 21 accepted Derivation of weak form for variational problem Oct 10 answered How to solve this Reaction-Diffusion problem by FEM? Oct 8 awarded Yearling May 15 asked Reference request: Finite difference methods on curvilinear (body fitted) grids Apr 25 answered Transpose of matrix inverse: $(AA^T)^{-1}A^Tb \stackrel{?}{=} (A^TA)^{-1}A^Tb$ Apr 25 answered Derivative of matrix inner product Mar 6 comment Construction of a system differential equation from the projected 2D solution curves I believe this problem may not have a unique solution. If you consider the curve to be given as X(t), Y(t), Z(t) where t \in (0,1) and a continuous monotonously increasing function f so that f(0) = 0, and f(1) = 1 then X(f(t)), Y(f(t)), Z(f(t)) will as well be a solution to your problem. Mar 6 comment derivative of a function using cosine transform With the Fourier transform the function does not have to be periodic, that requirement is only given for the Fourier series approximation for a function. Mar 1 answered How to create a transition matrix that will guarantee an outcome after infinite transitions Feb 26 answered MATLAB software for graph theory Feb 25 asked Derivation of weak form for variational problem Nov 27 awarded Tumbleweed