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Top Questions
23
votes
Error in converting a PDF to a PNG in ImageMagick
pdf
conversion
imagemagick
asked Feb 4, 2018 at 18:41
superuser.com
22
votes
How do teaching buy outs work?
funding
united-states
academic-life
salary
asked Mar 27, 2019 at 20:00
academia.stackexchange.com
17
votes
Intuition behind stability and instability in model theory
lo.logic
model-theory
intuition
asked Jul 7, 2020 at 20:48
mathoverflow.net
14
votes
Eigenvalues of $A^TA$
linear-algebra
matrices
asked May 10, 2015 at 0:50
math.stackexchange.com
10
votes
Examples of $\aleph_0$-categorical nonhomogeneous structures
lo.logic
model-theory
asked Jul 15, 2020 at 19:09
mathoverflow.net
8
votes
Who is credited for the syntax tree in synthetic linguistics
historical-linguistics
syntax-trees
asked Feb 24, 2019 at 19:15
linguistics.stackexchange.com
8
votes
How to get nth derivative of $e^{x^2/2}$
functions
derivatives
polynomials
recursion
asked Oct 19, 2015 at 22:06
math.stackexchange.com
8
votes
Are $\Pi_2$ consequences of universal theories witnessed by finitely many terms?
logic
model-theory
asked Apr 29, 2020 at 17:07
math.stackexchange.com
8
votes
What is the status of the three crises in the history of mathematics?
mathematics
terminology
asked May 8, 2019 at 19:03
hsm.stackexchange.com
6
votes
Why cumulative hierarchy of Sets is not model of ZF
set-theory
model-theory
asked Oct 29, 2017 at 19:50
math.stackexchange.com
1
2
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Top Answers
55
Frobenius norm of product of matrix
math.stackexchange.com
50
How to prove limit of measurable functions is measurable
math.stackexchange.com
40
A ring in which the two operations are equal is {0}
math.stackexchange.com
26
How to integrate $\int_0^{\infty} \frac{e^{ax} - e^{bx}}{(1 + e^{ax})(1+ e^{bx})}dx$ where $a,b > 0$.
math.stackexchange.com
13
Who are the top mathematicians who were ignored due to their unconventional approach?
hsm.stackexchange.com
13
Suppose $a_n>0$ and $\sum_{n=1}^{\infty}{a_n}$ diverges. Determine convergence of $\sum_{n=1}^{\infty}{\frac{a_n}{s_n^2}}$, where $s_n=\sum^n a_n$.
math.stackexchange.com
11
Proving the inequality $|e^z-1|\leq e^{|z|}-1$
math.stackexchange.com
10
Prove that a regular Lindelöf topological space is normal
math.stackexchange.com
10
Proof that $\partial(A\times B) = ((\partial A)\times B)\cup (A\times(\partial B))$
math.stackexchange.com
9
Let $R$ be a ring. Define a circle composition $\circ$ in $R$ by $a \circ b =a+b-ab$, $a, b \in R$.
math.stackexchange.com
9
Improper integral $\int_0^\infty \frac{\sin(x)}{x}dx$ - Showing convergence.
math.stackexchange.com
9
Power Set of $X$ is a Ring with Symmetric Difference, and Intersection
math.stackexchange.com
9
Is the matrix $A$ positive (negative) (semi-) definite?
math.stackexchange.com
9
If $f: \mathbb{C} \rightarrow \mathbb{C}$ is analytic and $\lim_{z \to \infty} f(z) = \infty$ show that $f$ is a polynomial
math.stackexchange.com
8
Proof: Derivative of $(-1)^{x}$
math.stackexchange.com
7
Show that $\lfloor(2+\sqrt{3})^n\rfloor$ is an odd integer whenever n is a nonnegative integer
math.stackexchange.com
7
Boundary of the intersection of two open sets in $\mathbb{R}^n$
math.stackexchange.com
7
Show that $\int _{-\infty}^\infty f(x) dx>0 $ .
math.stackexchange.com
7
Probability Theory, Symmetric Difference
math.stackexchange.com
7
There exist meager subsets of $\mathbb{R}$ whose complements have Lebesgue measure zero
math.stackexchange.com
7
Interior and boundary of $\mathbb{Q}$ in $\mathbb{R}$
math.stackexchange.com
7
Show there exists $\xi \in [a,b]$ such that $g(\xi)\int_a^\xi f(x)\text{d}x=f(\xi)\int_\xi^b g(x)\text{d}x$
math.stackexchange.com
7
Pointwise convergence implies $L^p$
math.stackexchange.com
7
$\sum_{n=1}^{\infty} \frac{1}{(n+1)!} \prod_{k=1}^{n} f(k)$ diverges
math.stackexchange.com
7
Counter example for $(A \times B) \cap (C \times D) = (A \cap C ) \times (B \cap D)$
math.stackexchange.com
6
Given an entire function which is real on the real axis and imaginary on the imaginary axis, prove that it is an odd function.
math.stackexchange.com
6
Find the sum of the $\sum_{m=k}^{+\infty}\binom{m}{k}(1-p)^k\cdot p^{m-k}$
math.stackexchange.com
6
Does this one line proof for equivalence of union of closures make any sense?
math.stackexchange.com
6
$\sup_x(f) = \sup_x (g)$ . Show that there exists a $t$ such that $ f^2(t) + 5f(t) = g^2 +5g(t).$
math.stackexchange.com
6
Limit of definite integral of $f(x)\cos(mx)$
math.stackexchange.com
1
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