Mathematics

Benefactor

 Benefactor
First bounty you manually award on your own question.
Awarded 5089 times.
What equation to use when finding 6 variables?
Awarded 12 mins ago
Sieve for primes
Awarded Feb 26 at 12:16
A conditional probability problem where the next day depends on the last 3 days
Awarded Feb 26 at 11:50
Derivative and inverse
Awarded Feb 26 at 10:42
Cut-off function with first derivative property
Awarded Feb 26 at 7:51
Chain rule for functional derivates with the same variables
Awarded Feb 25 at 17:37
A simple geometric problem, solving $f'(x)=\frac{f(x)}{\sqrt{r(x)^2-f(x)^2}}$, given $r(x)$.
Awarded Feb 25 at 0:10
Expected squared deviation of the James Stein estimator
Awarded Feb 23 at 9:45
Consistency of the minimizer of the convex loss
Awarded Feb 22 at 17:11
Relationship between martingale and conditional expectation
Awarded Feb 22 at 12:43
Monster double integral
Awarded Feb 20 at 15:55
Lusin’s Theorem for Polish spaces with infinite Radon measure
Awarded Feb 20 at 0:02
Application of Dynkin's formula
Awarded Feb 19 at 17:32
Get wrong answer on $\frac{\partial \mathbf{x}^{\top} \mathbf{A} \mathbf{x}}{\partial \mathbf{x}}$ when using graph
Awarded Feb 16 at 15:21
Counterexample on two identical random variables with Poisson sum
Awarded Feb 15 at 17:26
How to prove the variance of this function of a normal random variable is decreasing?
Awarded Feb 15 at 16:42
How do I solve $\min_x \max(c_1^Tx, c_2^Tx, \dots, c_k^Tx)$ for $\lVert x \rVert_2 = 1$.
Awarded Feb 15 at 7:17
If $X_t=\int_0^t \sigma _s\,\mathrm d W_s$, how can I prove that $\mathrm d \left<X\right>_t=\sigma _t^2\,\mathrm d t$
Awarded Feb 14 at 20:33
Intuition behind universality of uniform distribution
Awarded Feb 14 at 20:17
Find process correlation function
Awarded Feb 14 at 8:56
Working out efficiently if points are within polygons for large datasets
Awarded Feb 12 at 19:07
probability of guessing a k-digit number sequentially from n trials
Awarded Feb 12 at 14:10
Let $V$ be a finite-dimensional vector space and $T:V\rightarrow V$ be linear. Suppose that $V = R(T) + N(T)$. Prove that $V = R(T)\oplus N(T)$.
Awarded Feb 10 at 1:48
Applying the Normal Equations to solve the Linear Regression Problems.
Awarded Feb 9 at 7:25
To prove that it is possible to find a prime number q with a primitive root r such that ind(p) is a prime, for a particular prime p.
Awarded Feb 7 at 11:05
Does gradient descent for linear regression select the minimal norm solution?
Awarded Feb 6 at 14:57
Harmonic functions $u$ and $v$ such that $\nabla u = a \nabla v$ for some function $a$.
Awarded Feb 6 at 10:21
Intuition for Brownian motion time-inversion formula
Awarded Feb 5 at 9:49
Basis for smooth vector fields given a Lie Group structure
Awarded Feb 4 at 23:56
On Probability Measures on $\{-1,+1\}^n$
Awarded Feb 4 at 13:51
How can I “see” that calculus works for multidimensional problems?
Awarded Feb 4 at 12:55
$A \oplus B \cong A \oplus C$ implies $B \cong C$ where $A,B,C$ are finitely generated $R$ modules and $R$ is a PID
Awarded Feb 4 at 1:08
Finding the limits of integration for the volume of a region inside a cube
Awarded Feb 2 at 4:07
Making vector subject of equation
Awarded Feb 2 at 0:42
Question related to $\operatorname{Max}_X \operatorname{Trace}(AX)$ s.t. $\|X\|=1$
Awarded Feb 1 at 23:26
How do we compute this specific $2$ variables integral?
Awarded Feb 1 at 11:04
Proved that angle subtended by a circle at centre is double at any other point on circle is wrong
Awarded Feb 1 at 5:18
What does group theory add to the understanding of error correcting codes?
Awarded Jan 31 at 12:10
Given isosceles triangles $\triangle ABC$ and $\triangle DBF$ (all spherical chords), identify the chord $\overline {DF}$ so that $|AD| = |DF| = |FC|$
Awarded Jan 31 at 0:10
How compute overall reliability based on two related (dependent) inter-rater reliability coefficients
Awarded Jan 30 at 22:35
Computing time of flight in a medium with a varying index of refraction
Awarded Jan 30 at 1:11
The Soup Problem: how to asymptotically fairly split a geometric series and a constant one using a single pattern?
Awarded Jan 29 at 19:05
If for every continuous distribution function $F$, $E[F(X_n)] \to E[F(X)]$ then $X_n \Rightarrow X$
Awarded Jan 29 at 14:11
$E[g(X,Y)|Y=y] = E[g(X,y)|Y=y]$ - Exercise $3.77$ Ross Probability Models.
Awarded Jan 29 at 11:26
Shuffle a poker deck between 4 players, with least required entropy
Awarded Jan 28 at 20:56
Unique solution of $\dot{x} = f(x), x(0) = x_0$
Awarded Jan 28 at 19:56
A positive semidefinite matrix multiplied by any matrix and its transpose is positive semidefinite?
Awarded Jan 28 at 18:31
Why has the equation $ax + by = (a + b)z$ always a solution with the given constraints?
Awarded Jan 27 at 13:32
The languages $A, B \in \Sigma^*$ are two semi-decidable but not decidable languages. Show that $A \cup B$ is semi-decidable.
Awarded Jan 26 at 18:21
Probability that $n$ random walks (1D) intersect a single point
Awarded Jan 26 at 16:41
Elliptic regularity estimate for Possion with bounded forcing term
Awarded Jan 25 at 17:32
Continuity in the Mean Value Theorem and the Implicit Function Theorem
Awarded Jan 25 at 10:36
Characteristic polynomial of a A agrees with its minimal polynomial if and only if all matrices that commutes with A is a polynomial of A
Awarded Jan 24 at 7:11
The group of additive sequences of integers
Awarded Jan 24 at 0:21
If $u$ is a solution of $F(x) \cdot \nabla u = h(u) $ and $F(x) \cdot v(x)>0 \forall x \in \partial U$ then $u\equiv 0$
Awarded Jan 23 at 18:16
Stability Analysis Finite Difference Methods Black-Scholes PDE
Awarded Jan 22 at 22:49
How to get the coefficients of Taylor series in several variables when sums are grouped by order of partial derivatives
Awarded Jan 22 at 4:01
distribution of linearly transformed variable
Awarded Jan 21 at 9:50
Some questions about determinants
Awarded Jan 20 at 16:12
The subspace $C$ of the space $(X,d)$ is compact
Awarded Jan 20 at 14:50
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