New posts in integers

For which values of $\theta$ does this equation $x^{\cos\theta} +y^{\sin\theta }=1$ have solutions in integers?

elementary-number-theory trigonometry diophantine-equations integers

Collatz divide by -2 instead

sequences-and-series convergence-divergence integers collatz-conjecture

Linear Diophantine equations with fractional coefficients

diophantine-equations integers rational-numbers

Division in $1$ variable

contest-math divisibility integers

Show $\sum_{k=1}^n \frac{1}{k^2} \le 2$ and $\ln(n!) \ge 1 -n+n\ln(n)$ for all positive integers n

sequences-and-series inequality induction integers

If $2x + 3y$ is multiple of $17$, then $9x + 5y$ is multiple of $17$

elementary-number-theory proof-verification integers

Is every property of the integers provable?

integers provability

Proving the area is irrational for triangle with integer vertices

vectors triangles inner-products 3d integers

For what integer values of $y$ is $\frac{3y-1}{y-3}$ an integer?

elementary-number-theory prime-factorization integers

Lower bound for $Pr(X > E[X])$ where $X$ is a non-negative integer random variable

probability integers upper-lower-bounds

Notation for every odd integer number

notation integers

What's special about 323 and squared rectangles?

number-theory graph-theory recreational-mathematics integers tiling

Calculating a Factorial Base Representation

elementary-number-theory number-systems integers

Showing that it is not possible that for every $q_j$ it holds that $2+\prod_{k \neq j} q_k $ is divisible by $q_j$.

elementary-number-theory prime-numbers modular-arithmetic divisibility integers

Determine all integral solutions of $a^2+b^2+c^2=a^2b^2$ [duplicate]

number-theory diophantine-equations congruences integers

When are quadratic rings of integers unique factorization domains?

number-theory commutative-algebra integers unique-factorization-domains

How to find all polynomials that map integers to integers?

polynomials integers

Why is the set of integers with the operation of addition considered a cyclic group?

group-theory cyclic-groups integers

Prove the equation $\left(2x^2+1\right)\left(2y^2+1\right)=4z^2+1$ has no solution in the positive integers

number-theory elementary-number-theory diophantine-equations integers

Are Transitions in a Hydrogen Atom Unique

physics diophantine-equations integers