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Top Questions

0 votes
1 answer
61 views
+100

What is the local basis at $0$ of inverse limit topology?

6 votes
1 answer
81 views
+50

Hausdorff dimension of sets with positive Lebesgue measure

0 votes
0 answers
123 views
+50

Nondegenerate flat Lie algebras

0 votes
0 answers
92 views
+100

Why can we say that the limits of $f_n$ exist and $f_n\to f$ a.s. by Arzela-Ascoli's theorem?

3 votes
1 answer
99 views
+50

Exemple where tower property of conditional expectation is NOT verify

1 vote
4 answers
242 views
+100

Why $f^2(x) \ne f(x)^2$?

1 vote
1 answer
42 views
+100

a question on visualizing a state of DAE and a question from a continous time nonlinear dynamics

0 votes
0 answers
48 views
+100

How can one justify that $\|(I - \mu\mu^T)x\|_2 = \|(I - \mu\mu^T)\|_2\|x\|_2$ where $\mu$ is from the tangent-normal decomposition of the vector $x$?

6 votes
1 answer
155 views
+50

Regarding the winding number

1 vote
0 answers
46 views
+50

Absolute value of functions in $H^1(\mathbb R^n)$

4 votes
1 answer
121 views
+300

Automorphisms of an Algebra

4 votes
0 answers
54 views
+50

Haar measure on $PSL_2(\mathbb{R})$ via Iwasawa decomposition

0 votes
1 answer
34 views
+50

Input for stopping in Dubin's path dynamics?

0 votes
0 answers
40 views
+50

When does Inverse Fourier transform look close to a positive definite function?

0 votes
0 answers
33 views
+50

"Leave-on-out Correlation" between Matrices

-1 votes
0 answers
35 views
+50

What conditions are required to guarantee that my matrix is skew-Hermitian?

3 votes
0 answers
61 views
+500

Finding an envelope for a moving circular sector

1 vote
0 answers
52 views
+50

Singular points of the commutator map

2 votes
0 answers
35 views
+50

Embedded arcs staying embedded after squaring.

1 vote
0 answers
75 views
+100

Euler integration solution from system of ODE's - already estimated values

2 votes
1 answer
68 views
+200

Extending a function that gives a value to convex functions to a measure

0 votes
2 answers
66 views
+50

Shadow of a rod

1 vote
0 answers
55 views
+50

a proof for krull schmidt theorem

3 votes
0 answers
53 views
+50

Solve the PDE $(xz-y)p+(yz-x)q=xy-z$ using lagrange method

2 votes
0 answers
64 views
+50

Is it true that $ \sum_{i=1}^{\infty}\left(M_{i-2} M_{i}-M_{i-1} M_{i-2}\right)<\infty, \text { a.s? } $

4 votes
0 answers
63 views
+100

Combinatorial Laplacian for homology with $Z_2$ coefficients

3 votes
1 answer
120 views
+100

How do you prove the existence of the addition function without pre-supposing it?

1 vote
0 answers
81 views
+400

Finding the expected value of two correlated RVs

3 votes
2 answers
102 views
+200

Creating an integral to represent the volume of the intersection of two balls in cartesian coordinates

1 vote
1 answer
68 views
+50

Lagrange inversion theorem of $x^r(x+k)$ to generalize the W Lambert function

1 vote
0 answers
20 views
+100

Expected value of the distance of sample average from the overall average restricted to some random elements

-2 votes
1 answer
60 views
+100

Corrected conjecture about a possible inequality $\sum_{i=1}^{n}\sqrt{\frac{x_i+1}{4x_i^2+10x_i+4}}\leq \frac{n}{3}$ .

4 votes
1 answer
160 views
+50

New formulae for the Riemann Zeta Series

9 votes
0 answers
154 views
+100

Theorem about multiplicity set of continuous functions.

7 votes
0 answers
190 views
+250

For which values of $q$ is $\int_{\mathbb{R}^{2N}}\frac{|u(x)-u(y)|^q}{|x-y|^{N+sq}}dxdy$ is finite?

0 votes
0 answers
25 views
+50

Can we define limiting behavior function of higher order in terms of norms?

0 votes
0 answers
17 views
+50

Proving that maximum empirical likelihood estimator converges to normal under constraint

0 votes
0 answers
68 views
+50

How patch a proof about Mysior's counterexample?

2 votes
0 answers
38 views
+50

How to prove that there exists $C_1>0$ such that $ \max\{\|f_{n+1}-f_n\|_{\infty}, \|g_{n+1}-g_n\|_{\infty}\}\le 2^nC^nC_1^n\frac{T^n}{n!} $?

2 votes
0 answers
33 views
+50

Lipschitz continuity of square root of sum of matrix squares

2 votes
0 answers
32 views
+50

Multi-variable Rational Function that is always between the largest and second largest of the arguments.

3 votes
0 answers
39 views
+50

Is this a valid q-deformation of $SU(2)$ via the $SU(3)$ Lie algebra?

0 votes
1 answer
32 views
+50

Equality of infimal integral over family of functions, with and without pointwise closure

1 vote
1 answer
71 views
+50

Let p be a prime. Prove that $x^4 + 4 y^4 = p$ has integer solutions if and only if $p = 5$. In this case, find the solutions for x and y.


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