Abstract:
An asymptotic formula is obtained for the number of representations of a sufficiently large natural $N$ in the form $b_1p_1+b_2p_2+b_3p_3=N$ with the conditions $$ \left|b_ip_i-\frac{N}3\right|\le H, H\ge (b_1b_2b_3)^\frac43N^\frac23(\ln N)^{60}, b_i\le(\ln N)^{B_i}, $$ where $b_1$, $b_2$$b_3$, $N$ are pairwise coprime natural numbers, $B_i$ — arbitrary fixed positive numbers.
Keywords:ternary Goldbach problem, almost equal terms, short exponential sum with primes, small neighborhood of centers of major arcs.