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On an additive problem of unlike powers in short intervals

Qingqing Zhang (2022)

Czechoslovak Mathematical Journal

We prove that almost all positive even integers n can be represented as p 2 2 + p 3 3 + p 4 4 + p 5 5 with | p k k - 1 4 N | N 1 - 1 / 54 + ε for 2 k 5 . As a consequence, we show that each sufficiently large odd integer N can be written as p 1 + p 2 2 + p 3 3 + p 4 4 + p 5 5 with | p k k - 1 5 N | N 1 - 1 / 54 + ε for 1 k 5 .

On Linnik's theorem on Goldbach numbers in short intervals and related problems

Alessandro Languasco, Alberto Perelli (1994)

Annales de l'institut Fourier

Linnik proved, assuming the Riemann Hypothesis, that for any ϵ > 0 , the interval [ N , N + log 3 + ϵ N ] contains a number which is the sum of two primes, provided that N is sufficiently large. This has subsequently been improved to the same assertion being valid for the smaller gap C log 2 N , the added new ingredient being Selberg’s estimate for the mean-square of primes in short intervals. Here we give another proof of this sharper result which avoids the use of Selberg’s estimate and is therefore more in the spirit of Linnik’s...

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