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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