New posts in Arithmetic Progression

Product of arithmetic progressions

Is there an 11-term arithmetic progression of primes beginning with 11?

On the prime number theorem in arithmetic progression

Are there five consecutive primes in arithmetic progression?

Special arithmetic progressions involving perfect squares

What is the shortest route to Roth's theorem?

What are the analytic properties of Dirichlet Euler products restricted to arithmetic progressions?

Erdos Conjecture on arithmetic progressions