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Top Questions
20
votes
What follows from Axiom of Dependent Choice (DC) and what doesn't?
logic
set-theory
axiom-of-choice
foundations
asked Jun 5, 2017 at 20:16
math.stackexchange.com
15
votes
Where was $I_x/I_x^2$ first introduced? (DG or AG)
ag.algebraic-geometry
reference-request
dg.differential-geometry
ac.commutative-algebra
ho.history-overview
asked Dec 3, 2017 at 20:38
mathoverflow.net
14
votes
Are $\partial$-exact and $\bar\partial$-exact forms also $\partial\bar\partial$-exact?
dg.differential-geometry
complex-geometry
cohomology
asked Feb 6, 2017 at 23:32
mathoverflow.net
10
votes
An example of a non-geometric $C^\infty(M)$-module
dg.differential-geometry
ac.commutative-algebra
smooth-manifolds
modules
asked Jun 28, 2017 at 11:08
mathoverflow.net
8
votes
Category theory from the first order logic point of view
logic
category-theory
model-theory
foundations
asked Aug 5, 2017 at 14:33
math.stackexchange.com
8
votes
Connections and curvature in commutative algebra
reference-request
dg.differential-geometry
ac.commutative-algebra
connections
asked Dec 12, 2016 at 16:54
mathoverflow.net
7
votes
Is there an upper bound on dimension of kernel of elliptic operator for a fixed closed manifold M
dg.differential-geometry
differential-equations
smooth-manifolds
elliptic-pde
differential-operators
asked Feb 18, 2017 at 21:06
mathoverflow.net
7
votes
A naive conjecture about Taylor series convergence
real-analysis
complex-analysis
numerical-methods
asymptotics
taylor-expansion
asked Feb 5, 2018 at 20:48
math.stackexchange.com
7
votes
How to verify satisfialibility in a model? (Confusions with Gödel's Completeness Theorem)
logic
model-theory
asked Jan 16, 2017 at 0:45
math.stackexchange.com
6
votes
Existence of vector space complement and axiom of choice
linear-algebra
vector-spaces
axiom-of-choice
asked Mar 25, 2016 at 21:11
math.stackexchange.com
1
2
next
Top Answers
52
What are the open subsets of $\mathbb{R}^n$ that are diffeomorphic to $\mathbb{R}^n$
mathoverflow.net
39
Are there other kinds of bump functions than $e^\frac1{x^2-1}$?
math.stackexchange.com
21
Prove that the Lie derivative of a vector field equals the Lie bracket: $\frac{d}{dt} ((\phi_{-t})_* Y)|_{t=0} = [X,Y]$
math.stackexchange.com
12
When was the earliest appearance of Empirical Cumulative Distribution Plots?
stats.stackexchange.com
11
Isomorphism between $\Bbb{R}^2 \times \Bbb{R}^2$ and $\Bbb{R}^2 \otimes \Bbb{R}^2$
math.stackexchange.com
9
A star shaped open set in $\mathbb{R}^n$ is diffeomorphic to $\mathbb{R}^n$
math.stackexchange.com
7
Where does the sum of $\sin(n)$ formula come from?
math.stackexchange.com
6
Why is it bad to pick basis for a vector space?
math.stackexchange.com
6
What concept does an open set axiomatise?
math.stackexchange.com
6
What do people mean by "canonical"?
math.stackexchange.com
6
Why $\displaystyle\lim_{n\to+\infty}x_n\otimes y_n=x\otimes y\;?$
math.stackexchange.com
5
What is the relation between $C^\infty$-linear and tensorial?
math.stackexchange.com
5
Determinant of the Transpose of an Operator.
math.stackexchange.com
5
Basic tensor derivation
math.stackexchange.com
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