Products of primes in arithmetic progressions

Products of primes in arithmetic progressions. https://t.co/3bPPD5qSud

This https://t.co/EnuRkHDOIv has been replaced. Links: https://t.co/OUQNuR7DiO https://t.co/FTHFCRtbys https://t.co/1x4p7jQF5M https://t.co/BGXfKIv894

for almost all primes $p \leq q$. [6/6 of https://t.co/ZydWxQElqJ]

logarithmic density of primes in certain unions of cosets of subgroups of $\mathbb{Z}_q^\times$ of small index and study in detail the exceptional case that there exists a quadratic character $\psi \pmod{q}$ such that $\psi(p) = -1$ [5/6 of https://t.co/Zy