Anthony Peter
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 Apr 12 comment Prove that if $\sum{a_n}$ converges absolutely, then $\sum{a_n^2}$ converges absolutely Is it fair to just use the ratio test on the squares as well? Apr 12 comment Convergence of sequence of differentiable functions Really you only need convergence of $f_n$ at a single point for this to still work Apr 12 answered Continuously differentiable function definition? Apr 12 comment Discrete Measure of Interval bounty expires soon... Apr 12 answered If $\sigma_n=\frac{s_1+s_2+\cdots+s_n}{n}$ then $\operatorname{{lim sup}}\sigma_n \leq \operatorname{lim sup} s_n$ Apr 12 answered limsup of average smaller than limsup Apr 5 comment Is the Limit of the derivative of a $C^1$ function always the equal to the one-sided derivative? Do you know that $\nabla_v f(x) = \nabla f(x) \cdot v$? Apr 5 comment Discrete Measure of Interval no worries, thank you Apr 5 comment Discrete Measure of Interval @user254665 I meant if $B \subseteq A$, $$\frac{1}{N} \# \left(B \cap \frac{\mathbb Z}{N} \right) \leq \frac{1}{N} \# \left(A \cap \frac{\mathbb Z}{N} \right)$$ Apr 5 comment Discrete Measure of Interval comments on what I've provided? Apr 5 comment Discrete Measure of Interval @user254665 I meant w.r.t inclusion Apr 1 comment Injective or Surjective and Same Dimension Implies Vector Space Isomorphism @ClémentGuérin Sure, works just as well since the kernel is trivial Apr 1 revised Injective or Surjective and Same Dimension Implies Vector Space Isomorphism edited body Apr 1 revised Discrete Measure of Interval added 19 characters in body Apr 1 asked Injective or Surjective and Same Dimension Implies Vector Space Isomorphism Apr 1 comment Condition for a tensor to be decomposable Suarez-Alvarez So to be clear, the sufficiency just comes from the fact that you have 6 unknowns and the condition will just give 6 equations to determine these unknown coefficients? Mar 30 revised Discrete Measure of Interval added 1 character in body; deleted 3 characters in body Mar 30 revised Discrete Measure of Interval added 154 characters in body Mar 30 asked Discrete Measure of Interval Mar 30 accepted Simple Question About Partition of Interval