Reputation
9,149
Top tag
Next privilege 10,000 Rep.
Access moderator tools
Badges
19 49
Newest
 Good Answer
Impact
~161k people reached

Oct
9
revised What is the difference between the terms 'equation' and 'algorithm'?
added tags
Oct
9
reviewed No Action Needed Let p be a prime. Prove that there are ϕ(p−1) many primitive roots mod p.
Oct
9
reviewed No Action Needed If p is prime and p|$a^n$ prove that $p^n|a^n$
Oct
8
reviewed Looks OK Integer values of $a$ for which the expression $(x+a)(2013+x)+1$ is a Perfect Square
Oct
8
reviewed Reviewed Multiplication of negative numbers is always positive
Oct
8
reviewed No Action Needed Framed Cobordism Classes of links in $\mathbb R^3$
Oct
7
reviewed Close Finding a certain subsemigroup of $(\mathbb R,+)$
Oct
7
reviewed Close Solve for a and b? $a = \frac 1{20}(b^2 + 2b + 25)$ and $-a-1=-b$
Oct
2
reviewed Leave Open How to prove that $\frac{\eta^{14}(q^4)}{\eta^{4}(q^8)}=4\eta^4(q^2)\eta^2(q^4)\eta^4(q^8)+\eta^4(q)\eta^2(q^2)\eta^4(q^4)$?
Sep
28
reviewed Reviewed If two norms are equivalent on a dense subspace of a normed space, are they equivalent?
Sep
28
reviewed No Action Needed How to understand the solution to an exponential variable equation?
Sep
28
reviewed No Action Needed Choosing the best estimator
Sep
28
reviewed Edit Inequality Proof, need help simplifying
Sep
28
revised Inequality Proof, need help simplifying
improved formatting
Sep
28
reviewed Approve Prove this statement…
Sep
28
reviewed Leave Open What are Aleph numbers intuitively?
Sep
27
reviewed Leave Open Categories, whose objects are morphisms
Sep
27
reviewed Close Example of a group in which the equation $x^2=e$ has more than two solutions
Sep
27
comment How would one define a “manifold” object in prose writing?
In layman's terms, a manifold (in the mathematical sense, but Thomas is correct that there is another) is an object which, when looked at closely, appears to be a "flat" Euclidean space (think of looking at a sphere closely and percieving a flat plane), but may have interesting global structure (i.e., the sphere isn't actually a flat plane). The dimension is a bit of a red herring - in abstract mathematics (and indeed in a huge number of applications) there isn't anything special about dimensions smaller than 4.
Sep
27
reviewed Reject Finding the inverse of a rational exponential function