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 Mar 15 asked Prove a certain cyclic extension with prime power order is simple Mar 11 accepted Divergence of “inverse square law” vector field Mar 11 revised Divergence of “inverse square law” vector field edited tags Mar 11 asked Divergence of “inverse square law” vector field Feb 22 accepted Finite extension of field with positive characteristic Feb 22 asked Finite extension of field with positive characteristic Feb 3 asked Regarding the number of isomorphisms between splitting fields Jan 28 comment Convergence of convolution with an even summability kernel @user1952009: "even" as in each $K_n$ is an even function, $K_n(-x) = K_n(x)$ and I've linked to a description of summability kernels. Jan 28 revised Convergence of convolution with an even summability kernel added 143 characters in body Jan 28 asked Convergence of convolution with an even summability kernel Jan 27 comment Prove an equality involving Fejer Kernel @user1952009 yes, in fact. Otherwise I wouldn't have posted this question... I've since solved this problem, I'll post an answer shortly. Jan 27 revised Compute the Fourier Series of a trig function edited body Jan 27 comment Compute the Fourier Series of a trig function You're right, my typo. Thanks! Jan 27 comment Compute the Fourier Series of a trig function @GregoryGrant Given that $K_n$ is an even summability kernel, $g_n$ is indeed odd. I'll try computing just the sine terms. Jan 27 revised Prove an equality involving Fejer Kernel added 89 characters in body Jan 27 comment Prove an equality involving Fejer Kernel Yes, it's $2(n+1)$. But the summation for $K_{2n+1}$ has a constant $2$ in front of it, which cancels. Jan 27 asked Compute the Fourier Series of a trig function Jan 27 asked Prove an equality involving Fejer Kernel Jan 9 awarded Curious Jan 8 comment Integrate by changing order of integration Thanks! The answer comes quickly once the problem is set up correctly...