Mathematics

81%

+7 −0

How can I choose a point from a uniform distribution within a regular polygon?

2 answers · posted 8mo ago by Karl Knechtel‭ · last activity 8mo ago by trichoplax‭

plane-geometry applied-mathematics sampling

77%

+5 −0

Notation for one-sided hypothesis testing

1 answer · posted 2y ago by tommi‭ · last activity 8mo ago by Glen_b‭

statistics notation hypothesis-testing

33%

+1 −4

Without trial and error, how can I effortlessly deduce all $n, k_i ∈ ℕ ∋ \binom n {k_1, k_2, ..., k_n} =$ given c?

1 answer · posted 8mo ago by Chgg Clou‭ · edited 8mo ago by Chgg Clou‭

combinatorics

42%

+1 −2

Picture proof for expansion of $x^n−y^n$

2 answers · posted 8mo ago by Este‭ · last activity 8mo ago by Peter Taylor‭

visualization

42%

+1 −2

1 picture proof for the triangle inequality and the reverse triangle inequality

0 answers · posted 8mo ago by Este‭ · edited 8mo ago by trichoplax‭

visualization

71%

+3 −0

Classification for involutory real infinite series

1 answer · posted 9mo ago by nsajko‭ · last activity 8mo ago by Peter Taylor‭

classification real-analysis inverse polynomials series

71%

+3 −0

Is there a quadratic version of exponential smoothing?

0 answers · posted 8mo ago by peterbalch‭

statistics signal-processing

55%

+3 −2

Intuitively, why doesn't picking unpopular integers ($> 31$) lower your probability of winning lotteries?

1 answer · posted 9mo ago by Ethen‭ · last activity 9mo ago by Derek Elkins‭

lottery

33%

+1 −4

How to decide whether to buy a lottery with a too negative EV, but passable $\Pr($you win jackpot at least once│n plays)? [closed]

0 answers · posted 9mo ago by Chgg Clou‭ · edited 9mo ago by Chgg Clou‭

lottery

60%

+1 −0

Proving that this relation implies another relation on the Coxeter group [4,3,3,4].

0 answers · posted 9mo ago by WheatWizard‭ · edited 9mo ago by WheatWizard‭

group-theory coxeter-groups

37%

+1 −3

Why do the Expected Values differ, for different wagers of the same lottery?

1 answer · posted 9mo ago by Chgg Clou‭ · last activity 9mo ago by Peter Taylor‭

lottery

80%

+6 −0

Criteria for solvable Minesweeper game?

0 answers · posted 10mo ago by Olin Lathrop‭ · edited 10mo ago by Olin Lathrop‭

algorithm

71%

+3 −0

Properties of distances between adjacent vector elements and related functions

1 answer · posted 10mo ago by stofred‭ · last activity 10mo ago by Artisian‭

analysis vector recreational-mathematics integer-sequences

71%

+3 −0

how to mathematically express a relationship in which a vector can be any 3D unit vector

2 answers · posted 10mo ago by Trevor‭ · last activity 10mo ago by trichoplax‭

notation vector

81%

+7 −0

Prove that 49 is the only prime square to be followed by twice a prime square and then a semiprime

1 answer · posted 1y ago by Peter Taylor‭ · last activity 10mo ago by Servaes‭

number-theory integer-sequences

60%

+1 −0

Considering the "type" $\Pi x:A.\Pi y:B(x).Type$

1 answer · posted 1y ago by user205‭ · last activity 10mo ago by Dan Doel‭

type-theory logic

71%

+3 −0

Average distance from circle's center to a point

1 answer · posted 10mo ago by TheCodidacter, or rather ACodidacter‭ · last activity 10mo ago by TheCodidacter, or rather ACodidacter‭

geometry calculus

44%

+2 −3

How to compare lotteries, when one has highest probability of winning the jackpot, but another the highest Expected Value?

1 answer · posted 11mo ago by Chgg Clou‭ · last activity 11mo ago by tommi‭

lottery

71%

+3 −0

Closed-form expression for sum of Modulo Arithmetic Progression

1 answer · posted 11mo ago by theabbie‭ · edited 11mo ago by trichoplax‭

formula summation sequence modular-arithmetic

77%

+5 −0

Finding a single row of Matrix after exponentiation

1 answer · posted 11mo ago by theabbie‭ · edited 11mo ago by trichoplax‭

exponent algorithm matrices

28%

+0 −3

Which other Real Analysis textbooks unusually recommend ending delta-epsilon proofs with a cluttered, bedecked $\epsilon$? [closed]

0 answers · posted 11mo ago by TextKit‭ · closed 11mo ago by Mithical‭

real-analysis

33%

+0 −2

2 construals "of 100 patients presenting with a lump like the claimant’s in Gregg v Scott, 42 will be ‘cured’ if they are treated immediately."

2 answers · posted 11mo ago by DNB‭ · last activity 11mo ago by r~~‭

statistics

22%

+0 −5

How to intuit that if you destroy someone else's lottery ticket, you didn't deprive her of a chance of winning the lottery?

0 answers · posted 12mo ago by DNB‭ · edited 12mo ago by DNB‭

lottery

80%

+6 −0

Does this generalization of path-connectedness also cover general connectedness?

1 answer · posted 3y ago by celtschk‭ · last activity 12mo ago by ronno‭

topology connectedness

50%

+0 −0

Universal property of quotient spaces

2 answers · posted 1y ago by Snoopy‭ · last activity 12mo ago by ronno‭

topology

42%

+1 −2

How to intuit P(win the same lottery twice) $= p^{2}$ vs. P(win the same lottery twice | you won the lottery once) $= p$?

2 answers · posted 12mo ago by Chgg Clou‭ · edited 12mo ago by Chgg Clou‭

lottery

33%

+1 −4

What's mathematically fallacious with Edvin Hiltner's Lotterycodex patterns, to maximize your chance of winning lotteries? [closed]

0 answers · posted 1y ago by Chgg Clou‭ · closed 1y ago by Mithical‭

lottery

60%

+1 −0

Defining the two universes from Calculus of Constructions in LF

0 answers · posted 1y ago by user205‭ · edited 1y ago by user205‭

type-theory logic

66%

+2 −0

On Tarski-style universes in type theory

1 answer · posted 1y ago by user205‭ · last activity 1y ago by Derek Elkins‭

type-theory logic

66%

+2 −0

The purpose of logical frameworks in specifying type theories

1 answer · posted 1y ago by user205‭ · last activity 1y ago by Derek Elkins‭

type-theory logic

28%

+0 −3

How do I compare lotteries' chances of winning jackpot, when they differ in the maximum number of plays?

1 answer · posted 1y ago by Chgg Clou‭ · edited 1y ago by Chgg Clou‭

lottery

22%

+0 −5

If a changes to b, then doesn't a + d = b? Why a(1 + d) = b? [closed]

0 answers · posted 1y ago by Chgg Clou‭ · closed 1y ago by Peter Taylor‭

high-school-mathematics

22%

+0 −5

Isn't Ontario 49 always worse than Daily Grand? [closed]

0 answers · posted 1y ago by Chgg Clou‭ · closed 1y ago by Peter Taylor‭

lottery

60%

+1 −0

The meaning of $\pm$

2 answers · posted 1y ago by tommi‭ · last activity 1y ago by Derek Elkins‭

notation

22%

+0 −5

At what jackpot minimum is playing Lottario rational?

1 answer · posted 1y ago by Chgg Clou‭ · edited 1y ago by Chgg Clou‭

lottery

60%

+1 −0

Connection between caustics and conjugate points?

0 answers · posted 1y ago by tommi‭

differential-geometry

66%

+2 −0

Unification and generalization of limit and colimit

1 answer · posted 1y ago by celtschk‭ · last activity 1y ago by Derek Elkins‭

limits category-theory

75%

+4 −0

Generalization of categorical product

1 answer · posted 1y ago by r~~‭ · last activity 1y ago by Derek Elkins‭

category-theory

71%

+3 −0

Criterion in terms of the bases for determining whether one topology is finer than another

1 answer · posted 1y ago by Snoopy‭ · last activity 1y ago by celtschk‭

topology

54%

+4 −3

Is it worth it to replace Arabic numerals with Kaktovik numerals?

1 answer · posted 1y ago by GoldenGold‭ · last activity 1y ago by DavidCary‭

Kaktovik numerals

50%

+0 −0

Finding a quadratic that has solutions to given values

1 answer · posted 1y ago by brah‭ · last activity 1y ago by trichoplax‭

algorithm approximation numerical-analysis

75%

+4 −0

What is the probability that the convex hull of $n$ randomly distributed points has $l$ of the points on its boundary?

1 answer · posted 1y ago by siric‭ · edited 1y ago by tommi‭

probability convex-hull

77%

+5 −0

Is $f(x)=\sin(x)$ the unique function satisfying $f'(0)=1$ and $f^{(n)}(\Bbb R)\subset [-1,1]$ for all $n=0,1,\ldots$?

1 answer · posted 1y ago by Grove‭ · edited 1y ago by Pavel Kocourek‭

derivatives real-analysis

60%

+1 −0

Is there a "regular" quasi-convex function $f:\Bbb R^2 \to \Bbb R$ that is not a monotone transformation of any convex function?

0 answers · posted 1y ago by Pavel Kocourek‭

multivariable-calculus real-analysis convex-analysis monotone-functions

60%

+1 −0

Is there a two variable quartic polynomial with two strict local minima and no other critical point?

0 answers · posted 1y ago by Pavel Kocourek‭

multivariable-calculus real-analysis maxima-minima polynomials roots

30%

+1 −5

What did James Stewart mean by "the line integral reduces to an ordinary single integral in this case" ?

2 answers · posted 1y ago by TextKit‭ · edited 1y ago by trichoplax‭

line-integral

66%

+2 −0

Proving $|{\bf R}^{\bf R}|=|2^{\bf R}|$ using the Schroeder-Bernstein Theorem

2 answers · posted 1y ago by Snoopy‭ · last activity 1y ago by celtschk‭

set-theory

28%

+0 −3

Expanding the Integration problem.

1 answer · posted 1y ago by Anonymous‭ · last activity 1y ago by TextKit‭

integration

80%

+6 −0

What is the Name of Function for Probability of a Certain Sum on Random Die Rolls?

1 answer · posted 1y ago by James McLellan‭ · last activity 1y ago by Derek Elkins‭

statistics

37%

+1 −3

Find all integer solutions for $a_1(a_1+k)(a_1+2k)...(a_1+(2k+1)d)+1 = n^2$ [closed]

1 answer · posted 1y ago by beloh‭ · edited 1y ago by beloh‭

arithmetic algebra series

Communities