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43m
comment Show that if $f$ is analytic on a domain $D$, and if $|f|$ is constant, then $f$ is constant.
possible duplicate of If $|f|$ is constant, so is $f$ for $f$ analytic on a domain $D$.
1h
reviewed Leave Closed Why is convergence required for a series to be differentiable?
1h
reviewed No Action Needed relationship of polar unit vectors to rectangular
6h
reviewed No Action Needed Intuition of the meaning of homology groups
1d
reviewed Reviewed Is there a mathematical symbol for “the value grows”?
2d
comment Does $\Bbb{CP}^{2n} \# \Bbb{CP}^{2n}$ ever support an almost complex structure?
In the answer you link to, you use the eight-dimensional version of the Wu theorem. Is there a known $4n$-dimensional version of the Wu theorem? I didn't know about the eight-dimensional version prior to reading your answer.
2d
reviewed Reviewed Proving formula for product of first n odd numbers
Aug
29
reviewed Reviewed Riemann's Hypothesis Proof
Aug
29
reviewed No Action Needed Proof check: $(4n)!$ is divisible by $2^{3n}3^{n}$
Aug
29
reviewed Reviewed How many of each ticket were sold in one day?
Aug
28
reviewed No Action Needed Checking that a $3$-D diagram is commutative
Aug
28
comment Sums of rising factorial powers
Ah, you might not have enough reputation yet. Oh well, keep it in mind for future use.
Aug
28
reviewed Reviewed Sums of rising factorial powers
Aug
28
comment Sums of rising factorial powers
You should use the sandbox if you are part way through an answer.
Aug
28
comment Let $V=\mathbb{R}^\mathbb{R}$, let $W$ be the subset of $V$ consisting of all monotonically inc or dec functions. Is $W$ subspace of $V$?
Have you tried checking the three conditions for $W$ to be a subspace of $V$?
Aug
28
reviewed Close how many transpositions exist in this permutation?
Aug
27
reviewed Edit singular-measures tag wiki excerpt
Aug
27
revised singular-measures wiki excerpt
deleted 1 character in body
Aug
27
reviewed Approve Show that $H \times\{1_K\}$ is a normal subgroup of $H \times K$
Aug
27
reviewed Approve singular-measures tag wiki