New posts in arithmetic-progressions

Why does the primorial $23\#$ come up so often in long prime arithmetic progressions?

number-theory prime-numbers arithmetic-progressions primorial

Convex sided polygon with exterior angles in AP [duplicate]

geometry diophantine-equations polygons arithmetic-progressions

Convex n-sided polygons whose exterior angles expressed in degrees are in arithmetic progression

geometry diophantine-equations polygons arithmetic-progressions

Sum of series : $1+11+111+...$

algebra-precalculus summation arithmetic-progressions geometric-progressions

If there is one perfect square in an arithmetic progression, then there are infinitely many

sequences-and-series number-theory square-numbers arithmetic-progressions

A Series with an increment in its difference .

sequences-and-series algebra-precalculus arithmetic-progressions geometric-series

Proving $a_n = a_i + (n - i)d$ by induction

sequences-and-series induction arithmetic-progressions

The ratio of their $n$-th term.

summation arithmetic-progressions

Prove $\frac{1}{u_{0} u_{1}}+\frac{1}{u_{1} u_{2}}+\ldots+\frac{1}{u_{i} u_{i+1}}+\ldots \ldots+\frac{1}{u_{n} u_{n+1}}=\frac{n+1}{u_{0} u_{n+1}}$ [closed]

sequences-and-series arithmetic-progressions

Sum of first n natural numbers proof

algebra-precalculus summation arithmetic-progressions

Are there arbitrarily large sets $S$ of natural integers such that the difference of each pair is their GCD?

combinatorics arithmetic gcd-and-lcm arithmetic-progressions

Arrange all numbers from 1 to n such that no 3 of them are in Arithmetic Progression

combinatorics arithmetic-progressions

If $a+b+c=3$, find the greatest value of $a^2b^3c^2$.

sequences-and-series arithmetic-progressions geometric-progressions

Congruent sets of an arithmetic sequence and a geometric sequence

elementary-set-theory proof-writing quadratics arithmetic-progressions geometric-progressions

Prove that $1 + 4 + 7 + · · · + 3n − 2 = \frac {n(3n − 1)}{2}$

discrete-mathematics summation induction arithmetic-progressions

There cannot be an infinite AP of perfect squares.

number-theory elementary-number-theory proof-verification arithmetic-progressions

Given triangle ABC with $\alpha=2\beta$ and $b, c, a$ is forming an arithmetic sequence. Find $\alpha, \beta, \gamma$.

trigonometry triangles arithmetic arithmetic-progressions

A.P. terms in a Quadratic equation.

algebra-precalculus quadratics arithmetic-progressions

Arithmetic and geometric sequences: where does their name come from?

sequences-and-series terminology arithmetic-progressions geometric-progressions

Infinitely many primes of the form $4n+3$

elementary-number-theory prime-numbers arithmetic-progressions