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Excavator

Edit first post that was inactive for 6 months.

Awarded 9305 times.

What is the difference between $p(a,b)$ and $p(a|b)$?

Awarded 23 hours ago

Jan

1717 bronze badges

What is a causal process in time series analysis?

Awarded 23 hours ago

Paolo Totaro

32 bronze badges

Why is the Poisson Approximation to the Binomial Distribution Useful?

Awarded 23 hours ago

Jerry

33 bronze badges

Number of three-term arithmetic progressions in [n]

Awarded 23 hours ago

SFA

1177 bronze badges

Change of measure to make things "easier"?

Awarded 23 hours ago

tomathas

32 bronze badges

Expressing n mod m in terms of floor values?

Awarded 2 days ago

4LegsDrivenCat

1156 bronze badges

Do direct sums commute with colimits?

Awarded Mar 25 at 4:31

my2cents

3771 silver badge11 bronze badges

Derived functor of exact functor

Awarded Mar 24 at 4:18

TopGenAx

32 bronze badges

a question regarding subsets of basin of attraction

Awarded Mar 24 at 4:18

chloe

15811 bronze badges

What is the maximum value of $e$ given that $a+b+c+d+e=8$ and $a^2+b^2+c^2+d^2+e^2=16$ and where $a$, $b$, $c$, $d$, and $e$ are real numbers? [closed]

Awarded Mar 24 at 4:18

Stephen Gzy

12 bronze badges

Understanding an eigenspace of semi-simple elements in Lie algebra

Awarded Mar 24 at 4:18

eigenvalue

2,3459 silver badges18 bronze badges

Looking to find the largest rectangle, by area, inside a polygon

Awarded Mar 23 at 4:03

Carlos Cuartas

32 bronze badges

Prove $\phi^n = \phi F_n + \text{(another Fibonacci number)}$ using mathematical induction.

Awarded Mar 23 at 4:03

Saif

54 bronze badges

Maximum payout job scheduling

Awarded Mar 23 at 4:03

fweth

2,94812 silver badges22 bronze badges

Approximating the error function erf by analytical functions

Awarded Mar 23 at 4:03

Tesseract

1032 bronze badges

Evaluating $\int_0^{\large\frac{\pi}{4}} \log\left( \cos x\right) \, \mathrm{d}x $

Awarded Mar 22 at 13:57

Utkarsh

1,15814 bronze badges

Proving NP completeness of a graph problem

Awarded Mar 22 at 4:34

algorhythm

635 bronze badges

Integral of floor function

Awarded Mar 22 at 4:34

afaolek

1034 bronze badges

How to find corners of square from its center point?

Awarded Mar 21 at 4:18

sorayadragon

1034 bronze badges

Fibonacci / Lucas Numbers Relationship: $F_{2n} = F_n L_n$

Awarded Mar 21 at 4:18

Graeme Moss

1033 bronze badges

Countability of the set of all finite weighted graphs.

Awarded Mar 20 at 5:01

Niklas Rosencrantz

2,1985 gold badges30 silver badges44 bronze badges

Prove that a directed graph with no cycles has at least one node of indegree zero

Awarded Mar 20 at 5:01

Qingdu1729

52 bronze badges

Is $\frac{\textrm{d}y}{\textrm{d}x}$ not a ratio?

Awarded Mar 20 at 5:01

Deeponjit Bose

355 bronze badges

I am missing some point about Cantor's Theorem

Awarded Mar 20 at 5:01

Deeponjit Bose

18813 bronze badges

Changing a finite number of terms in a sequence does not affect the limit

Awarded Mar 20 at 5:01

Blitzer

1,7556 silver badges11 bronze badges

Critical value of a piecewise function

Awarded Mar 19 at 4:10

Numeral

8842 silver badges16 bronze badges

Based on historical data, should I buy lottery numbers that have not come out yet?

Awarded Mar 18 at 4:15

user132964

Almost Taylor's Theorem Proof through Integration by Parts

Awarded Mar 18 at 4:15

Peter Job

32 bronze badges

Substituting $x = \sec(u)$ to evaluate $\int\sqrt{x^2-1}\ dx$: but why is $\tan(u) = \sqrt{x^2 - 1}$ rather than $\tan(u) = -\sqrt{x^2 - 1}\ $?

Awarded Mar 18 at 4:15

qianqian07

3631 silver badge13 bronze badges

Intersection of the kernel with the interpolation space

Awarded Mar 18 at 4:15

cs89

2461 silver badge7 bronze badges

How To Find The Unit Eigenvectors

Awarded Mar 18 at 4:15

Lassi

135 bronze badges

$\triangle ABC$ is inscribed in a circle, Find $\angle{BAC}$

Awarded Mar 17 at 22:00

TShiong

1,2641 gold badge5 silver badges12 bronze badges

Does symmetry of $AB$ imply symmetry of $A^\dagger B^T$

Awarded Mar 17 at 15:10

Wurstcake

12010 bronze badges

Prove $f(x) = 0$ for all $x \in [0, \infty)$ when $|f'(x)| \leq |f(x)|$

Awarded Mar 17 at 5:04

xfireskyx

1499 bronze badges

$kx\equiv l\pmod{\!m}$ solvable $\!\iff\! d:=(k,m)\mid l$. If so it has $d$ solutions

Awarded Mar 17 at 5:04

vina

13 bronze badges

Solution manual for " How to Prove it by D. Vellemen "

Awarded Mar 17 at 5:04

Sophie Clad

2,16516 silver badges36 bronze badges

Prove that EFZY is a cyclic quadrilateral

Awarded Mar 17 at 5:04

dan_fulea

28.2k1 gold badge16 silver badges46 bronze badges

Multiplicative Inverse of Modulo n is UNIQUE

Awarded Mar 17 at 5:04

BakedPotato66

32 bronze badges

Measurable Cardinals are Mahlo Cardinals

Awarded Mar 16 at 4:57

fantasie

1,3958 silver badges20 bronze badges

Get a Fisher information matrix for linear model with the normal distribution for measurement error?

Awarded Mar 15 at 5:48

nico

33 bronze badges

Find the scalars

Awarded Mar 15 at 5:48

Dominique

7726 silver badges19 bronze badges

The good, the bad and the ugly with conditional probability/expectation

Awarded Mar 14 at 16:10

Lorents

3141 silver badge8 bronze badges

Origin of the dot and cross product?

Awarded Mar 14 at 4:16

Matthew Smith

233 bronze badges

Is it allowed to swap 2 columns in gaussian elimination?

Awarded Mar 14 at 4:16

H. H.

1931 silver badge7 bronze badges

Given a line and a point in 3D, how to find the closest point on the line?

Awarded Mar 13 at 4:55

saxbophone

1034 bronze badges

Power Series: Proving that converges or diverges

Awarded Mar 13 at 0:08

Brendan Darrer

2491 silver badge9 bronze badges

Evaluate the integral $\int \:\frac{\sqrt{x^2+2x+2}}{x}dx$

Awarded Mar 12 at 4:17

bb_823

1437 bronze badges

Does topology apply to the integers?

Awarded Mar 12 at 4:17

aschepler

7,38017 silver badges26 bronze badges

Prove: $<S>$ $= G$, and every $x \in G$ can be written as $x = s_{1}s_{2}$ with $s_{1}, s_{2} \in S$

Awarded Mar 12 at 4:17

JLGL

516 bronze badges

$(z-1)e^{-iα}+(z-1)^{-1}e^{i α}$ whose imaginary part is 0.What is equation on which it lies?

Awarded Mar 11 at 5:43

hemant kumar

1378 bronze badges

corresponding isomorphism real number

Awarded Mar 11 at 5:43

Izak Schmidlkofer

258 bronze badges

Why binomial expansion approximation works?

Awarded Mar 11 at 5:43

David Hartley

1,6791 gold badge10 silver badges12 bronze badges

Uniform convergence and differentiation proof of remark 7.17 in Rudin's mathematical analysis

Awarded Mar 10 at 4:35

BF9

36 bronze badges

Real analysis- Bernoulli's inequality [closed]

Awarded Mar 10 at 4:35

Alex Ruiz

2921 silver badge12 bronze badges

What sequences are in the $l^p$ space?

Awarded Mar 10 at 4:35

Juan David Rengifo Castro

32 bronze badges

Determine the Topology induced by a discrete metric. [closed]

Awarded Mar 10 at 4:35

PGibbon

1034 bronze badges

Dimensions of tensor product

Awarded Mar 8 at 4:09

Евген

1033 bronze badges

Combinatorics: How many possible paths?

Awarded Mar 8 at 4:09

Jay

33 bronze badges

Ordinal tetration: The issue of ${}^{\epsilon_0}\omega$

Awarded Mar 8 at 4:09

John

3,50416 silver badges36 bronze badges

Orthonormal basis for Sobolev Space $H^1[0,1]$ in one dimension

Awarded Mar 7 at 5:28

Clarent

1439 bronze badges

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