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Seth
Just some guy who likes math.
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Top Questions
30
votes
Can two topological spaces surject onto each other but not be homeomorphic?
general-topology
examples-counterexamples
asked Jul 11 '12 at 13:40
math.stackexchange.com
18
votes
Do differentiable functions preserve measure zero sets? Measurable sets?
real-analysis
measure-theory
examples-counterexamples
asked Jul 16 '14 at 1:54
math.stackexchange.com
18
votes
Good examples of Lagrange multiplier problems
undergraduate-education
calculus
problem-design
vector-calculus
asked Jul 8 '15 at 19:41
matheducators.stackexchange.com
13
votes
Hartshorne II prop 6.9
algebraic-geometry
asked Oct 16 '14 at 20:43
math.stackexchange.com
12
votes
Proof of holomorphic Lefschetz fixed point formula using currents in Griffiths and Harris
differential-geometry
complex-geometry
differential-forms
asked Nov 24 '14 at 15:44
math.stackexchange.com
10
votes
Conformal map from punctured disc to disc
complex-analysis
asked Aug 22 '12 at 23:57
math.stackexchange.com
9
votes
Hartshorne II prop 6.6
algebraic-geometry
asked Oct 15 '14 at 20:41
math.stackexchange.com
7
votes
Prove there is a unique continuous function satisfying this integral equation
real-analysis
integral-equations
asked Jun 4 '13 at 20:24
math.stackexchange.com
7
votes
Is there a nonempty open bounded subset of plane whose boundary contains no 1 dimensional interval?
general-topology
examples-counterexamples
asked Mar 20 '14 at 19:42
math.stackexchange.com
6
votes
Why would we expect the pushforward to encode the total derivative of a smooth map?
differential-geometry
manifolds
asked Oct 16 '12 at 23:03
math.stackexchange.com
1
2
next
Top Answers
22
What's a group whose group of automorphisms is non-abelian?
math.stackexchange.com
21
Abelian groups of order n.
math.stackexchange.com
19
$f: \mathbb{R} \to \mathbb{R}$ that takes each value in $\mathbb{R}$ twice
math.stackexchange.com
14
With regards to vector spaces, what does it mean to be 'closed under addition?'
math.stackexchange.com
11
There exists a unique isomorphism $M \otimes N \to N \otimes M$
math.stackexchange.com
11
In any finite graph with at least two vertices, there must be two vertices with the same degree
math.stackexchange.com
11
Can a set containing $0$ be purely imaginary?
math.stackexchange.com
10
Continuous function a.e.
math.stackexchange.com
9
Does every Noetherian ring contain at least one maximal ideal?
math.stackexchange.com
9
Gradient steepest direction and normal to surface?
math.stackexchange.com
8
Is there an injective continuous map $\mathbb{R}^2 \rightarrow \mathbb{R}$?
math.stackexchange.com
7
$A^2−A=0$, where A is a $9×9$ matrix. Then which is true?
math.stackexchange.com
7
Symbol $\Gamma$ when talking about vector fields.
math.stackexchange.com
7
tensorflow sparse categorical cross entropy with logits
stackoverflow.com
6
What kind of matrix is it that when multiplied with its transpose produces the identity?
math.stackexchange.com
6
Using Rouche's theorem to find number of roots.
math.stackexchange.com
6
Modules over commutative rings
math.stackexchange.com
6
Research in algebra.
math.stackexchange.com
6
A bijection from a disconnected space to a connected space?
math.stackexchange.com
5
Locally lipschitz on $[a,b]$ implies lipschitz
math.stackexchange.com
5
Closed subsets of Lindelöf spaces are Lindelöf
math.stackexchange.com
5
complex analysis multiple choice question
math.stackexchange.com
5
how to visualize binomial theorem geometrically?
math.stackexchange.com
5
A contractible space is path connected.
math.stackexchange.com
5
proving:Lamda is an eigenvalue of T if and only if $T-\lambda \mathrm{I}$ is not injective.
math.stackexchange.com
5
Showing that a function is not meromorphic on $\mathbb{C}$
math.stackexchange.com
5
question about continuity or discontinuity of a function
math.stackexchange.com
5
Show that $R/I$ is a field, where $R$ is a PID , where $I$ is a nonzero prime ideal.
math.stackexchange.com
5
Show $S^2$ is not homeomorphic to the closed unit disk.
math.stackexchange.com
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