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MathlibNt.AnalyticNumberTheory.BombieriVinogradov.Bombieri1965Richert418

Richert (4.18) normalization and a modern large-sieve producer #

Richert's 1969 paper defines

E*(N,q) = max_{2 <= x <= N} max_{(l,q)=1} |pi(x;q,l) - li(x)/phi(q)|

and cites Bombieri's Theorem 4 for its mean-value estimate. This module formalizes that exact displayed normalization from Richert.

The recovered Bombieri original was inspected separately. Its Theorem 4 is stated for the maximal von-Mangoldt error psi(z;q,a) - z / phi(q), not directly for Richert's prime-counting error. Thus the declarations below are deliberately labelled as Richert's partial-summation normalization rather than a verbatim Bombieri statement.

The final theorem is a modern replacement producer. It uses the project's large-sieve/Vaughan chain and retains only its genuine low-conductor nonprincipal primitive Siegel--Walfisz input.

Richert's li x normalization in (4.18): the literal integral from 2 to x, with no added constant.

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    The inner maximum in Richert's E*, over canonical reduced residues. The inserted zero makes the definition total at q = 0; for every modulus in (4.18), the absolute-value family is nonempty and nonnegative.

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      Richert's exact outer maximum in (4.18), over integer endpoints 2 <= x <= N. The inserted zero makes the definition total when N < 2.

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        The exact additive shift between Richert's literal integral and the project's domination-friendly Standard-BV normalization.

        Changing from the project's Standard-BV normalization to Richert's literal integral costs exactly one positive constant divided by phi(q).

        Richert's exact nested maximum is bounded by the existing Standard-BV prefix maximum plus the explicit normalization shift.

        The exact proposition displayed as Richert (4.18), with the Vinogradov symbol expanded into an explicit positive multiplicative constant.

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          Normalization adapter from the project's Standard-BV endpoint to the exact Richert (4.18) statement. The exponent is increased by one to remain positive; the smaller modulus range and the fixed li shift are paid explicitly.

          Modern large-sieve producer for Richert's exact (4.18) endpoint.

          This is not presented as a transcription of Bombieri 1965. Its sole hypothesis is the pointwise nonprincipal primitive Siegel--Walfisz input; the high-conductor Vaughan and large-sieve work is supplied by the checked modern producer chain.