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MathlibNt.AnalyticNumberTheory.Chen1973.Chen1973Lemma6Equation17AlphaBridge

Chen 1973, Lemma 6, equation (17): alpha-line log-derivative bridge #

This module moves the exact finite ActualPhi identity from the unconditional Re s = 2 Bromwich representation to Chen's line Re s = alpha = 1 + 1 / log x, identifies the von Mangoldt series with -L'/L, and lifts the identity through the finite pair, primitive-character, and conductor-block sums. It does not assume an equation-(17) majorization or any later assembly conclusion.

theorem AnalyticNumberTheory.LargeSieve.chen1973Lemma6ConductorBlock_one_lt {x L level d : } (hlevel : 1 level) (hd : d chen1973Lemma6ConductorBlock x L level) :
1 < d

Conductors in a positive-level Chen block are greater than one.

theorem AnalyticNumberTheory.LargeSieve.chen1973Lemma6ActualPhi_eq_negLogDerivIntegral_alpha {x d : } [NeZero d] (χ : PrimitiveCharacter d) (_hχ : χ 1) (hx : 3 x) {pp : × } (hp₁ : 0 < pp.1) (hp₂ : 0 < pp.2) :
chen1973Lemma6ActualPhi x d χ pp = ↑(1 / (2 * Real.pi)) * (t : ), -deriv (DirichletCharacter.LFunction χ) ((chen1973Lemma6Alpha x) + t * Complex.I) / DirichletCharacter.LFunction (↑χ) ((chen1973Lemma6Alpha x) + t * Complex.I) * ((x / (pp.1 * pp.2)) ^ ((chen1973Lemma6Alpha x) + t * Complex.I) * chen1973MellinKernel (↑x) ((chen1973Lemma6Alpha x) + t * Complex.I))

The normalized full alpha-line transform for one primitive character and one prime pair. The factor is exactly 1/(2π) and the logarithmic derivative has the source sign -L'/L.

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    theorem AnalyticNumberTheory.LargeSieve.chen1973Lemma6ActualPhi_eq_alphaNegLogDerivIntegral {x d : } (χ : PrimitiveCharacter d) (hd : 1 < d) (hx : 3 x) {pp : × } (hp₁ : 0 < pp.1) (hp₂ : 0 < pp.2) :

    Totalized form of the exact alpha-line bridge, suitable for finite sums.

    Finite prime-pair lift of the alpha-line bridge.

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      theorem AnalyticNumberTheory.LargeSieve.chen1973Lemma6PrimePairSum_eq_alphaNegLogDeriv {x d B k m : } (χ : PrimitiveCharacter d) (hd : 1 < d) (hx : 3 x) :
      ppchen1973Lemma6PrimePairShell x B k m, (Real.log (x / (pp.1 * pp.2)))⁻¹ * chen1973Lemma6ActualPhi x d χ pp * χ ↑(pp.1 * pp.2) = chen1973Lemma6AlphaNegLogDerivPrimePairSum x d B k m χ

      The actual finite pair sum is exactly its alpha-line -L'/L lift.

      theorem AnalyticNumberTheory.LargeSieve.chen1973Lemma6CharacterSum_eq_alphaNegLogDeriv {x d B k m : } (hd : 1 < d) (hx : 3 x) :
      χ : PrimitiveCharacter d, star (χ x) * ppchen1973Lemma6PrimePairShell x B k m, (Real.log (x / (pp.1 * pp.2)))⁻¹ * chen1973Lemma6ActualPhi x d χ pp * χ ↑(pp.1 * pp.2) = chen1973Lemma6AlphaNegLogDerivCharacterSum x d B k m

      The actual finite primitive-character sum is exactly its alpha-line -L'/L lift.

      The conductor-block alpha-line expression, with the exact equation-(17) weight and norm retained.

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        Exact conductor-block lift. The positive level hypothesis is used only to show that each conductor in the block is greater than one, hence every primitive character in the block is nonprincipal.