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Mathematics

Excavator

 Excavator
Edit first post that was inactive for 6 months.
Awarded 10882 times.
Upper bounding the tail probability of a sum
Awarded Feb 11 at 5:01
An example to show that $\left(I \cap J\right)^{e} = I^{e} \cap J^{e} $ is not true in general.
Awarded Feb 10 at 6:25
Calculate limit with modulus
Awarded Feb 10 at 6:25
Alternative proof that $\frac{a^2+b^2}{ab+1}$ is a square when it's an integer.
Awarded Feb 10 at 6:25
Definition of zero in monomial ideals
Awarded Feb 10 at 6:25
Proving the usual distance metric in $\mathbb{R}$ is complete
Awarded Feb 9 at 5:12
Proof that the Riemann Zeta Function is holomorphic on $\Re(z)>1$
Awarded Feb 9 at 5:12
Why is arcsin represented with the ^(-1) notation? [duplicate]
Awarded Feb 8 at 4:41
solving $\tan^{-1}(x+1)+\tan^{-1}x+\tan^{-1}(x-1)=\tan^{-1}3$
Awarded Feb 8 at 4:41
The Borsuk-Ulam theorem in Allen Hatcher's "Algebraic Topology"
Awarded Feb 8 at 4:41
Optimization theory. active set
Awarded Feb 7 at 5:10
Prove the intersection of transitive relations is transitive.
Awarded Feb 6 at 5:45
In a certain city three car brands, $A, B, C$ have... Is my solution correct?
Awarded Feb 5 at 8:32
Derivative of $x^x$
Awarded Feb 5 at 4:11
Birthday probability problem
Awarded Feb 5 at 4:11
Curl of a noise field on a sphere
Awarded Feb 5 at 4:11
Integral for volume under a sphere bounded by a square
Awarded Feb 4 at 4:03
How to sketch the graph of $\sqrt x+\sqrt y=1$ in order to find the area between it and $x+y=1$?
Awarded Feb 4 at 4:03
Can the Surface Area of a Sphere be found without using Integration?
Awarded Feb 4 at 0:20
Finite Partitions of Unity in a Compact Hausdorff Space
Awarded Feb 1 at 4:03
Show that if $y = x^{1/n}$, then $y^n =x$.
Awarded Jan 31 at 4:46
Expectation and Variance of Stochastic Differential Equations
Awarded Jan 31 at 4:46
Infinite Series $\sum\limits_{n=1}^\infty\frac{(H_n)^2}{n^3}$
Awarded Jan 30 at 5:52
Theorem 2.7.1 of Friendly Introduction to Mathematical Logic, by Leary and Kristiansen
Awarded Jan 29 at 6:17
Localization of finite direct product of ring at an element
Awarded Jan 29 at 6:17
Find all positive integers $n > 1$ such that the polynomial $P(x)$ belongs to the ideal generated by the polynomial $x^2 +x +1$ in $\Bbb Z_n[x]$
Awarded Jan 29 at 6:17
Why does $\lim_{x\to0} \left(1+\frac1x\right)^x=1$?
Awarded Jan 28 at 5:03
Find a basis for orthogonal complement in R⁴
Awarded Jan 28 at 5:03
Calculating the coordinate of third point in triangle [closed]
Awarded Jan 28 at 5:03
Prove that a convex function on $\mathbb{R}^n$ is continuous
Awarded Jan 28 at 5:03
Hatcher Example 2.39
Awarded Jan 27 at 5:42
For which spaces is the natural map $\pi_n(X) \to H_n(X)$ an isomorphism in all degrees?
Awarded Jan 26 at 5:21
clarification on Riemann surfaces and branch cuts
Awarded Jan 25 at 4:25
Representation theory and character proof
Awarded Jan 25 at 4:25
Math formula with $\mathcal N$ symbol. What is it?
Awarded Jan 24 at 5:54
Determine the probability for a pair $(x, y)$
Awarded Jan 24 at 5:54
Evaluating $\int_0^\infty \frac{e^{-tx^2}-e^{-x^2}}{x}dx$
Awarded Jan 23 at 4:45
Inducing maps on the exterior products
Awarded Jan 23 at 4:45
Envelope Matching Problem
Awarded Jan 22 at 4:46
How to get a reflection vector?
Awarded Jan 22 at 4:46
What are Minkowski space and Lorentzian manifolds, formally speaking?
Awarded Jan 20 at 4:42
Smooth transition between linear functions
Awarded Jan 20 at 4:42
Law of iterated expectations
Awarded Jan 19 at 4:08
Trying to find volume by rotating a region..getting a negative value
Awarded Jan 19 at 4:08
The closure of a set is closed
Awarded Jan 17 at 4:02
Prove that $∫\limits_0^π \frac{\cos x \cos 4x}{(2 − \cos x)^2}\ \text dx\ =\ \frac π9 \left(2160 − 1247\sqrt3\right)$
Awarded Jan 16 at 4:57
Does a bijection between to sets always permit a well defined function
Awarded Jan 15 at 4:32
about weak derivative of Bochner integrable function
Awarded Jan 15 at 4:32
How to construct many smooth structures on a differentiable manifold?
Awarded Jan 13 at 4:25
On Laplace transform of periodic functions
Awarded Jan 13 at 4:25
How do you integrate Gaussian integral with contour integration method?
Awarded Jan 12 at 5:19
Locus of midpoint of chord of an ellipse whose length is constant
Awarded Jan 10 at 15:19
When can Eisenstein's Criterion never be used?
Awarded Jan 10 at 4:17
If $n$ is an odd pseudo prime number, then $M_n = 2^n-1$ is a larger one
Awarded Jan 9 at 4:06
Proof for weak (1,1)-estimate for Hilbert Transform
Awarded Jan 8 at 4:22
Meaning of "horizontal k-form"
Awarded Jan 8 at 4:22
Laplace Method - Estimation of an integral
Awarded Jan 8 at 4:22
Splitting field of $x^3-10x+10$ over $\mathbb{Q}(\sqrt{13})$
Awarded Jan 7 at 5:11
An inequality with a constraint
Awarded Jan 7 at 5:11
Prove the sequence is monotone decreasing and find the limit?
Awarded Jan 7 at 5:11
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