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math.NT2016
Chen primes in arithmetic progressions
Paweł Lewulis
We find a lower bound for the number of Chen primes in the arithmetic progression , where . Our estimate is uniform for , where i…
math.NT2016
A Vinogradov-type problem in almost primes
Paweł Lewulis
We prove a generalisation of Vinogradov's theorem by finding for and fixed positive integers the asymptotics of the number of seq…