Mathematics

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First question with score of 1 or more.
Awarded 255469 times.
If a deck of 54 cards (including 2 jokers) is evenly split into 3 groups of 18, what is the probability that any one group contains both jokers?
Awarded 1 hour ago
Asymptotic expression for Fourier Transform of $e^{-|x|^n}$?
Awarded 1 hour ago
Let $A \subset \{1, 4, 7, 10, \ldots, 100\}$ such that $|A| = 19$. Prove that there are 2 distinct elements in $A$ whose sum is 104. How to do it? [closed]
Awarded 1 hour ago
Let $A$ be an abelian group of order $2^{100}$. Prove that $A$ is not a subgroup of $S_n$ for $n<200$.
Awarded 2 hours ago
Prove that the general formula for a sequence $a_n$ is $\frac{(-1)^n}{n!}$
Awarded 3 hours ago
proving an ODE with a specific solution can't exist using the existence and uniqueness theorem
Awarded 5 hours ago
Parametrising the intersection of a double cone and a plane?
Awarded 5 hours ago
Principal submatrix of a unitary matrix is unitary
Awarded 5 hours ago
Taylor Expansion Subseries
Awarded 8 hours ago
Need a PDA for L={ a^n b^m c^m d^n n,m>=1 }
Awarded 8 hours ago
How to calculate the principal curvature of a fitted surface by hessian matrix?
Awarded 8 hours ago
Event checksum calculation in the contact ID protocol via tcp/ip
Awarded 9 hours ago
How to algebraically calculate the difference in days for an inverse-proportion or more people=worse problem?
Awarded 9 hours ago
How to get the Power Set Axiom from accepting "Subset Axiom"?
Awarded 9 hours ago
Formula to figure out who owes who how much money for shared expenses
Awarded 9 hours ago
How to prove $f \in L^p(0,1)$
Awarded 9 hours ago
Finding flux of a vector field through a hemisphere
Awarded 9 hours ago
Conjecture: If $\sum_{i=1}^n \frac{1}{x_i}=1$ then $x_i | x_j$
Awarded 11 hours ago
(post deleted or otherwise unavailable)
Awarded 11 hours ago
(post deleted or otherwise unavailable)
Awarded 11 hours ago
(post deleted or otherwise unavailable)
Awarded 11 hours ago
Continuity of identiy mapping in the weak topology
Awarded 12 hours ago
Strassen factorization for $n \geq 3$
Awarded 12 hours ago
integration by parts in academic paper that incorporates a discontinity
Awarded 13 hours ago
Is the predictor-corrector scheme A-stable?
Awarded 14 hours ago
Proof linear independence of column vectors of a matrix
Awarded 14 hours ago
(post deleted or otherwise unavailable)
Awarded 14 hours ago
Permutations Math Practice
Awarded 16 hours ago
Calculating the probability of a set of 4 players with at least one hand with more than D doubles (in double 6 dominoes)
Awarded 16 hours ago
Let $f(z)=\exp(z)\cos(z)$ prove $f(z)=a$ has infinite solutions outside any circunference.
Awarded 17 hours ago
Projection that preserves pairwise distance of $n$ data points
Awarded 17 hours ago
Is the xth root of x always irrational [closed]
Awarded 18 hours ago
Why does the minimization trick still work for infinite dimensional inner product spaces?
Awarded 18 hours ago
How to Rewrite Sums $\lim_{N \to \infty} \sum_{k=0}^{N}$
Awarded 18 hours ago
Is there an injective function $f:\mathbb{R}^2\rightarrow\mathbb{R}^2$ that maps circles to $n$-gons?
Awarded 18 hours ago
Does proving the injectivity of an inverse function imply that the original function must be surjective?
Awarded 19 hours ago
How can I find the general term for a nonlinear recursive formula of a sequence? [closed]
Awarded 19 hours ago
Counter example for Riesz representation theorem when $p=\infty$.
Awarded 19 hours ago
I'm asked to find laurent series of f(z) with given anulus, and i saw that the singularities of f(z) its not on anulus
Awarded 19 hours ago
Get the formula to calculate sales compounded growth per month based on Yearly expected income
Awarded 19 hours ago
Set Problem:find the minimum number of d
Awarded 19 hours ago
What is a Function [closed]
Awarded 19 hours ago
About the sequence $a_{(n+1)} = a_n + \frac{(a_n)^2}{2}$, [closed]
Awarded 19 hours ago
A group equation and free product
Awarded 20 hours ago
How can I find the result of $ \sum_{n=1}^{\infty} \frac{\cos(n)}{n(n+1)} $ without computationally evaluating it
Awarded 20 hours ago
Predicate Logic - How Specific to Be When Converting From English Sentence
Awarded 21 hours ago
Computing $\mathbb{P}(X=Y)$ for a joint discrete probability distribution
Awarded 22 hours ago
The number of triangles in the fractal, which is formed from a square by the additional construction of isosceles right triangles
Awarded 22 hours ago
Dual PI controller and criterias for a stable system
Awarded 22 hours ago
Why $\ker \varphi \neq G$ in this application of Sylow's theorems
Awarded 23 hours ago
What does "dx" mean in ∫𝑓(𝑥)𝑑𝑥? [duplicate]
Awarded 23 hours ago
Formulation of an integer linear programming problem
Awarded 23 hours ago
Pseudo Thomae's function
Awarded yesterday
Proof of Marcinkiewicz-Zygmund strong law of large numbers
Awarded yesterday
Proving two circles are concentric given some conditions involving an isosceles trapezium and reflections.
Awarded yesterday
An (Incorrect) Solution to Problem 20(b) in Chapter 3 of Spivak's Calculus
Awarded yesterday
Book recommendations for relearning precalculus, for taking the GRE?
Awarded yesterday
Dirichlet’s approximation Theorem (Simultaneous version): In case Q is not interger
Awarded yesterday
Determine the two-term expansion for large roots of the transcendental equation $\tan(x) =\frac 1x$
Awarded yesterday
Why does $\sqrt{\cos x+1} = \sqrt{2}\left|\cos\left(\frac{x}{2}\right)\right|$?
Awarded yesterday
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