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Mathematics

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Awarded 176204 times.
Is there anything special about this value? [closed]
Awarded 5 hours ago
Why does splitting a shuffled sequence result in 37%?
Awarded 5 hours ago
Prove that $A \cap A_\alpha=\emptyset$
Awarded 6 hours ago
Differential operations on tensors and scalars
Awarded 7 hours ago
On the first quadrant, we connect with a segment all pairs of points $(x,0)$ to $(0,y)$ such that $x,y\in\mathbb{R}^+$ and $x+y=10$. Find the area.
Awarded 8 hours ago
If $f_i\in\Bbb Q[x_1,\cdots,x_n]$ have no common zero in $\Bbb C$, then $(f_1,\cdots,f_m)=(1)$ in $\Bbb Q[x_1,\cdots,x_n]$
Awarded 8 hours ago
Meaning of permutation order in QR decomposition with pivoting
Awarded 9 hours ago
Visuallizing complex vectors?
Awarded 9 hours ago
Compute $\lim_{x \to \infty } x(\sqrt{x^2 +2x} -2 \sqrt {x^2 +x} +x)$
Awarded 11 hours ago
almost single-valued upper hemicontinuous function
Awarded 11 hours ago
Forming incongruent triangles
Awarded 13 hours ago
A prime number of length 9 with each digit (1-9) only appearing once? [closed]
Awarded 14 hours ago
Is "categorical geometry" a currently researched subject?
Awarded 16 hours ago
Find all functions $f:\mathbb{R}\to\mathbb{R}$ such that for all $x,y\in\mathbb{R}, f(f(x))+f(f(y))+2f(xy)=f(x^2+y^2)$.
Awarded 16 hours ago
Some questions about a particular system of inter-dependent linear recurrence relations.
Awarded 17 hours ago
Limit of confluent Hypergeometric function [closed]
Awarded 20 hours ago
When do we have $\gcd(a+b, sc)=1$, provided $\gcd(a,c)=1$, $\gcd(b,c)=1$?
Awarded 21 hours ago
Does there exist a continuous injective mapping from $\mathbb{R}$ to $\mathbb{R}^3$ whose image is compact?
Awarded 22 hours ago
How does one prove that there is no field structure on $\Bbb R^3$ with $\Bbb R$ as subfield?
Awarded 23 hours ago
Homotopy groups of $\mathbb{R}^4$ with a ring removed
Awarded yesterday
How well can $e$ be approximated?
Awarded yesterday
Probability that a sequence has any(!) element that is repeated exactly $k$ times
Awarded yesterday
Majorization of Finitary Infinite Matroids
Awarded yesterday
What is the probability that the sum of two random invertible matrices over $\mathbb{F}_2$ is invertible?
Awarded yesterday
Can this integral be done smartly?
Awarded yesterday
Number of Independent Components of a totally symmetric rank-four tensor
Awarded yesterday
Showing that the subring of rational functions defined in the complement of V(G) can be identified with a localization of the polynomial ring
Awarded yesterday
(post deleted or otherwise unavailable)
Awarded yesterday
Twice differentiable Lipschitz functions have Lipschitz gradient
Awarded yesterday
Find the number of distinct cubes that can be made by painting each face of a given cube in one of the 5 given colors
Awarded yesterday
Algebraic Proof of Equivalence
Awarded yesterday
Topology: Is it possible that, the preimage of a non-open and non-close set is open?
Awarded yesterday
Let $\pi\colon C\left(X\right) \to M_{n}\left(\mathbb{C}\right)$ be a $C^*$-algebra homomorphism. How to describe its form?
Awarded yesterday
almost surely converges and partial sum
Awarded yesterday
Randomly Generating Real-Rooted Polynomial Equations
Awarded 2 days ago
Distribution densities of random variables for normal and exponential laws.
Awarded 2 days ago
Is there a source out there which works out a Hartman-Grobman-type theorem on a manifold?
Awarded 2 days ago
Calculating the height of a kite, given the wind speed, the rate of paying out the string, and the distance to the point directly under it
Awarded 2 days ago
Finding the optimised equation for a vector line that intersects two other lines
Awarded 2 days ago
Examples of *uncountable* null and meagre sets that are not rare
Awarded 2 days ago
Is $ \mathbb{Z}_2$ mathematically the same as $\mathbb{F}_2 $? [closed]
Awarded 2 days ago
Basic linear algebra - How does $A'BA = I$ imply $AA' = B^{-1}$?
Awarded 2 days ago
An optimization problem and proof of necessity
Awarded 2 days ago
How can I arrange letters into groups of six to have the fewest groups possible? [closed]
Awarded 2 days ago
Epsilon-Delta Proof when the function is a constant and the limit equals the constant
Awarded Sep 4 at 23:54
Action of a 1-Form in $\Omega^{1}(M, End(E))$ on a Section of a Vector Bundle
Awarded Sep 4 at 21:37
Polya urn scheme by induction task
Awarded Sep 4 at 19:25
Topological property that makes it possible for an embedding not to have a continuous left inverse
Awarded Sep 4 at 19:25
Representation and the corresponding spectral measure
Awarded Sep 4 at 18:55
If two sequences $\{a_n\}$ and $\{b_n\}$ be such that $a_n>b_n$ then show that $\lim a_n\ge\lim b_n$
Awarded Sep 4 at 15:11
Calculate the derivative of the modulus of the complex matrix
Awarded Sep 4 at 13:40
Kronecker product structure of matrix
Awarded Sep 4 at 12:49
Limit of $\frac{\log(x)!}{\log(x!)}$ as x tends to infinity [closed]
Awarded Sep 4 at 11:08
Determinant of a real and a complex matrix
Awarded Sep 4 at 11:08
Using logical equivalences without propositions?
Awarded Sep 4 at 11:08
(post deleted or otherwise unavailable)
Awarded Sep 4 at 10:09
Lengthy Indefinite Integral $\int \frac{\sqrt{x^2-4x+3}}{x^2+x+1} dx$
Awarded Sep 4 at 9:17
Homeomorphism between topological subspaces
Awarded Sep 4 at 9:01
Finding a pair of functions that meets a few requirements
Awarded Sep 4 at 8:06
Limit of geometric series becoming logarithm? [duplicate]
Awarded Sep 4 at 7:50
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