Number theory · Analysis · Conjecture

Riemann hypothesis

Do all nontrivial zeros of the Riemann zeta function have real part 12\frac12?

Openper Clay · Millennium Problems · checked Oct 10, 2026

Earlier version 10 of this page. View current →

Overview

Known

Finite-height verification, asymptotic critical-line proportions, zero-density estimates, a zero-free region and heat-flow bounds establish different scopes. New AI-related claims have separate review labels.

Open questions

RH requires every nontrivial zero at every height to lie on Re(s) = 1/2. Finite checks, positive proportions, sparse possible exceptions and positive Newman upper bounds do not settle that assertion; newer proposed results do not change the canonical status.

Latest

Precise statement

Classical Riemann ζ(s)\zeta(s), meromorphically continued from ∑n=1∞n−s\sum_{n=1}^{\infty}n^{-s}. Nontrivial zeros are those in 0<Re⁡(s)<10<\operatorname{Re}(s)<1; the conjecture requires Re⁡(s)=12\operatorname{Re}(s)=\frac12 for every such zero, at every height. Trivial negative-even zeros and the pole at s=1s=1 are outside this question. GRH and finite-field analogues have distinct domains.

Definitions

Critical line
The vertical line Re(s) = 1/2. RH concerns every nontrivial zero, whereas a positive asymptotic proportion or finite-height check covers a different scope.

How to read this question

Every zero, not almost every zero

RH is a universal statement at unbounded height. A verified initial interval, a large asymptotic on-line proportion and a sparse exception bound answer different restricted questions.

Limit Even density one could allow isolated off-line zeros. The selected counts do not estimate proximity to a proof.

Sources & review

Supporting statements

Source-grounded explanation · independent explanation review: pending.

Read the numerator and denominator first

Simple and on-line, distinct, and simple or on-line are different numerators. The selected asymptotic proportion theorems use total zeros counted with multiplicity as denominator.

Limit The 83.625% distinct and 88.762% union bounds cannot be substituted for the simple-on-line proportion.

Sources & review

Supporting statements

Source-grounded explanation · independent explanation review: pending.

Question paraphrased by OpenMath. Original wording is available in the sources.

Landscape

Figures and explorable examples. Selecting a statement opens its exact wording.

Where zeros can and cannot be

Height t on a logarithmic scale. Proved regions are solid, the proposed region is dashed. RH concerns every height, above any verified range.

0½7/81Re(s) = σ110⁴10⁸10¹²10¹⁶10²⁰tVerifiedall zeros on the line, t ≤ 3·10¹²Zero-freeσ > 1 − 1/(4.896 log t)Proposedno zeros for σ > 7/8RHevery zero on σ = ½

Classical Newman constant Λ

Proved bounds pin the value inside the shaded interval. Proposed bounds are dashed and not yet assessed.

00.050.10.150.20.25proved: 0 ≤ value ≤ 0.2proposed ≤ 0.1787854

Proportion bounds

Lower bounds on proportions. Each bar is a separate statement with its own definition of the count; bars are not cumulative.

Zeros on the critical line

Each sign change of Hardy’s Z(t) is a zero ½ + iγ of ζ on the critical line. This window shows the first zeros; certified verification reaches far higher.

29 nontrivial zeros in (0, 100]
0102030405060708090100tZ(t)

Results

The question 2

  • Open
    Classical RH holds

    Every zero at every height; negative-even trivial zeros and the pole at 1 are excluded.

  • Open
    Classical RH fails

    The logical negation of the all-zero classical target, not a failure of a broader GRH variant.

Equivalent formulations 2

  • Open
    The square-root prime-counting error holds

    An open target equivalent to classical RH, stronger than the prime number theorem.

  • Open
    The classical Newman constant is zero

    A heat-flow target equivalent to classical RH; positive upper bounds leave this target open.

Computations 1

  • Proved
    RH verified to height 3,000,175,332,800

    Every zero in the stated height range is on the line; rigorous counting excludes missed off-line zeros there.

    Up to 3,000,175,332,800Platt & Trudgian 2020

Bounds 5

  • Proved
    More than 67.25% simple zeros on the line, asymptotically

    An unconditional lower bound above 67.25% for simple zeros on the line; two cited proofs support one Claim.

    ≥ k₀ = 0.6725007037…Alpöge & Furman 2026
  • Proved
    Fewer possible zeros to the right of a fixed line

    The Guth–Maynard estimate improves quantitative bounds on possible zeros away from the critical line.

    Guth & Maynard 2024
  • Proved
    An explicit zero-free region near Re(s) = 1

    The March 2026 preprint improves a logarithmic exclusion region near the edge of the strip.

    Bellotti et al. 2026
  • Proved
    The Newman constant satisfies Λ ≥ 0

    Rodgers and Tao proved Newman’s nonnegativity conjecture: if RH is true, Λ must be exactly zero.

    ≥ 0Rodgers & Tao 2018
  • Proved
    A cited upper bound Λ ≤ 0.2

    The finite-height theorem and Polymath15 criterion yield Λ ≤ 0.2; newer proposed bounds remain separate.

    ≤ 0.2Platt & Trudgian 2020

Proposed 2

  • Proposed
    A fixed zero-free half-plane Re(s) > 7/8

    A claimed fixed half-plane, stronger than a region shrinking toward 1, but weaker than RH.

    OpenAI
  • Proposed
    Λ ≤ 0.1787854

    A source-reported candidate improvement over the selected published 0.2 baseline.

    ≤ 0.1787854Gomila

Conditional implications 1

  • Proved
    Dirichlet GRH implies classical RH

    A one-way specialization; a proof of classical RH supplies no proof for every other character.

    Alpöge & Furman 2026

Supporting results 5

  • Proved
    RH is equivalent to the prime-counting error target

    An equivalent formulation of the same canonical question.

    per Bombieri (official description)
  • Proved
    RH is equivalent to Λ = 0

    The equivalence is a theorem; whether the constant is zero remains the unresolved target.

    Rodgers & Tao 2018
  • Proved
    At least 83.625% distinct zeros, asymptotically

    A multiplicity bound, regardless of whether the distinct zeros lie on the line.

    ≥ 0.8362503518…Alpöge & Furman 2026
  • Proved
    At least 88.762% simple OR on-line zeros, asymptotically

    A union bound that constrains multiple off-line zeros, without excluding simple off-line zeros.

    ≥ 0.8876200082…Lamzouri 2026
  • Proved
    An average bound for simplicity and line membership

    This constrains an average of two different counts.

    Lamzouri 2026

Variants and analogues 4

  • Open
    Generalized RH for Dirichlet L-functions

    The Dirichlet version of GRH, a broader family than classical ζ.

  • Proved
    Partial bounds for a fixed Dirichlet character

    A theorem about a related family, with fixed-character quantifiers.

    Alpöge & Furman 2026
  • Proved
    Proved analogue: curves over finite fields

    Weil’s RH analogue for curves over finite fields.

    per Bombieri (official description)
  • Open
    Separate conjecture: all nontrivial zeros are simple

    A multiplicity assertion, separate from the horizontal-position assertion of RH.

Connections

How the recorded statements connect
⇔⇔impliesanaloguerelatedrelatedthe square-root prime-counting error holds · Openthe square-root prime-countingerror holds○ Openthe classical Newman constant is zero · Openthe classical Newman constantis zero○ OpenGeneralized RH for Dirichlet L-functions · OpenGeneralized RH for DirichletL-functions○ OpenProved analogue: curves over finite fields · ProvedProved analogue: curves overfinite fields● ProvedSeparate conjecture: all nontrivial zeros are simple · OpenSeparate conjecture: allnontrivial zeros are simple○ Openclassical RH holds · Openclassical RH holds○ OpenThe Newman constant satisfies Λ ≥ 0 · ProvedThe Newman constant satisfiesΛ ≥ 0● ProvedA cited upper bound Λ ≤ 0.2 · ProvedA cited upper bound Λ ≤ 0.2● Proved
  • ━ ⇔ equivalent
  • → implies
  • ┅ analogue or related (no logical link)
  • Border colour = status
6 connections · 3 consequences. Select a statement in the graph to show only its entries.

Equivalent formulations 2

Implications 1

Analogues and related questions 3

Consequences 3

Assuming classical RH holdsOpen

Assuming classical RH failsOpen

Approaches

How the problem is attacked, and what each line of attack cannot yet reach.

Analytic estimates restrict possible exceptions

Mollifiers and moment estimates give on-line proportions; large-value estimates give zero-density bounds; explicit estimates exclude edge regions.

Cannot yet reach These methods currently leave exceptional zeros possible. Different asymptotic and height assumptions cannot be merged into one all-zero guarantee.

Sources & review

Supporting statements

Source-grounded explanation · independent explanation review: pending.

Finite certificates and the heat-flow target

Rigorous zero counting supplies finite-height certificates and feeds bounds on Λ. The heat-flow formulation makes the remaining target exactly zero.

Cannot yet reach Positive upper bounds remain insufficient. A reported external formalization or numerical audit must be checked against its precise analytic inputs.

Sources & review

Supporting statements

Source-grounded explanation · independent explanation review: pending.

Geometric, positivity and spectral ideas

Bombieri describes finite-field geometry and positivity or spectral approaches as routes toward understanding zero location.

Cannot yet reach A classical proof still needs the relevant object or positivity statement. The finite-field theorem does not transfer automatically.

Sources & review

Supporting statements

Source-grounded explanation · independent explanation review: pending.

Timeline

  1. OpenAI’s proposed seven-eighths half-planeProposal

    The company release links a manuscript and formal evidence for a fixed zero-free half-plane Re(s) > 7/8.

    Independent acceptance and proof-chain correspondence are unassessed here. Even a valid bound would leave the region between 1/2 and 7/8.

  2. A second proof and separate counting boundsBound established

    Lamzouri v2 proves the same simple-on-line statement by a different argument and records further union and average bounds.

    A second proof does not count as a second increment of coverage. Simple OR on-line is not simple AND on-line.

  3. Above 67.25% simple zeros on the critical lineBound established

    Alpöge–Furman v2 presents the Claude-discovered argument, with human mathematical responsibility and reported Lean formalization.

    An asymptotic simple-and-on-line fraction over total multiplicity is not a percentage of RH solved. OpenMath has not executed the Lean code.

  4. Zeta zeros on the critical lineImproved bound

    A lower bound about 67.250% for simple critical-line zeros; a related distinct-zero bound about 83.625% is also reported.

  5. An explicit logarithmic zero-free regionBound established

    Bellotti–Trudgian–Yang excludes zeros near Re(s) = 1 with an explicit constant and t ≥ 3.

    The shrinking edge region does not cover the whole half-plane to the right of 1/2.

  6. Guth–Maynard zero-density estimateBound established

    The first preprint introduced the improved exception-count estimate; the selected v2 and 2026 journal publication support the displayed statement.

    For fixed σ ≥ 3/4 this bounds possible off-line zeros; it does not exclude every exception.

  7. Certified verification to height 3,000,175,332,800Bound established

    Platt–Trudgian uses rigorous arithmetic and counting to cover every zero through the specified ordinate; it also gives Λ ≤ 0.2.

    Height is not the number of checked zeros; no assertion about every higher zero follows.

  8. Newman’s nonnegativity conjectureBound established

    Rodgers–Tao establishes Λ ≥ 0. The selected corrected paper preserves this theorem.

    The first submission date is historical; the cited v5 has a later correction. RH still requires Λ ≤ 0.

  9. Riemann connects zeros to prime distributionFoundation

    The all-zero hypothesis arose alongside an explicit formula for counting primes.

    The conjectured all-zero location is not established by the explicit formula.

  10. From infinitely many zeros to positive proportionsFoundation

    Bombieri’s historical account follows the Hardy, Selberg, Levinson and Conrey line of work.

    This is a grouped historical bridge with no single supported event date; the modern denominator and simplicity convention must still be read separately.

  11. An individual numerical Newman-bound candidateProposal

    The pinned audit package proposes Λ ≤ 0.1787854 and attributes human–AI collaboration.

    The selected package has no independently established result date or accepted recompile here; the statement remains proposed.

Full history with sources →

Evidence

Evidence by kind
Literature

3 published papers · 4 preprints · 2 projects

Status per Clay · Millennium Problems · checked Oct 10, 2026.

Formal

None linked

Reported in sources: Anthropic and Axiom repositories report Lean proofs with exact zeta counts. OpenAI supplies targets and proof code for its proposed bound, with collection review unchecked. Comparator challenge files contain deliberate proof placeholders and must be paired with solutions. All code is linked at exact commits; OpenMath has not compiled, axiom-audited or independently reproduced it.

Computation

Certified computation

Review

Not yet reviewed

Collection last checked Oct 10, 2026.

Sources

Choose a starting point below. Each result links to its exact statement, cited passages and checks.

Start here

Bibliography 11

Research activity · 6 entries

Formalization

Individual AI-assisted submission: reported 67.35478% bound

R. Arun Chandru’s submission reports κ = 66812491/99194876 ≈ 0.6735478050. The independent challenge lists kernel verification and an attestation of GPT-6 Astra use. The displayed bound is asymptotic and counts distinct on-line zeros.

The score is not automatically a simple-zero bound. Operator kernel checks, statement faithfulness and expert review are separate; this activity creates no accepted Claim, OpenMath Run or reproduction.

Related statements · context, not additional proved progress

Independent Riemann challenge · October 2026 submission · sources & artifacts →

Formalization

Claude discovery and Anthropic’s reported Lean verification

The paper’s human authors take responsibility for a Claude-discovered proof. The pinned Lean repository reports proofs for actual zeta, with standard axioms and comparator verification; dependencies and declarations are linked for inspection.

A model-written manuscript, an author-reviewed theorem and a kernel-check report are different evidence. OpenMath has not run the proof; no independent reproduction is asserted.

Related statements · context, not additional proved progress

Alpöge–Furman · simple zeros on the line · sources & artifacts →

Formalization

Axiom Math formalization: paper certificate and later repository

The September paper describes a finite-set certificate and a transfer assuming known analytic inputs. The later pinned repository exports all four actual-zeta proportion targets and reports comparator verification; its dependencies include PrimeNumberTheoremAnd.

Do not conflate the early conditional transfer certificate with the later full target types. OpenMath has not audited that expanded proof chain or checked manuscript-to-Lean faithfulness.

Related statements · context, not additional proved progress

Lamzouri · another proof and further proportions · sources & artifacts →

Research direction

Recent AI-related proposals awaiting assessment

OpenAI reports a seven-eighths zero-free half-plane with Lean artifacts; Gomila reports an improved positive Newman upper bound with interval certificates. Each proposed Claim has its own scope and pinned source evidence.

These are proposals in this publication, excluded from established progress. No cited source establishes the full classical RH here.

Related statements · context, not additional proved progress

OpenAI · reported seven-eighths half-plane · sources & artifacts →

Gomila · proposed improved Newman bound · sources & artifacts →

Research direction

From infinitely many on-line zeros to proportion bounds

Hardy proved infinitely many zeros lie on the line; later work established positive proportions. The August 2026 paper identifies the previous simple-on-line benchmark as 5/12 and improves it to k₀ ≈ 0.6725007. Its proportion metric differs from finite-height verification.

A historical source’s old numerical records are not today’s best bounds. The selected papers are milestones, not an exhaustive priority history; new submissions stay separately attributed.

Related statements · context, not additional proved progress

Bombieri · official RH description · sources & artifacts →

Alpöge–Furman · simple zeros on the line · sources & artifacts →

Research direction

Geometry, positivity and spectral research directions

The official exposition connects finite-field geometry, positivity criteria and spectral ideas to the classical problem. These explain possible routes and why the finite-field analogue is informative.

An analogy, positivity reformulation or proposed spectral operator does not establish the missing classical theorem. No solution is asserted by this research-direction entry.

Bombieri · official RH description · sources & artifacts →

Selected literature; source observations and coverage limits are retained in the publication details.

Contributors

The original proportion theorem credits Claude; Lamzouri’s proof is human-authored with AxiomProver formalization. OpenAI’s recent company preprint is proposed here. Individual GPT-6 Astra use and Gomila’s Claude/ChatGPT/Codex collaboration are self-reported, not company endorsements or proof of RH.

Authors & roles

Alpöge–Furman · simple zeros on the line →

Levent Alpöge · Ralph Furman

The paper credits Claude (Anthropic) with discovery and writing; Alpöge and Furman with verification, Jarred Sumner with guiding the investigation, and Eric Easley with orchestrating Lean formalization. Company attribution is source-reported, not independently reproduced here.

OpenAI · reported seven-eighths half-plane →

OpenAI

OpenAI attributes this collection to an unreleased internal model. The zero-free-region work is an exception to the usual fixed evaluation procedure; the alternate 11/12 writeup was human-edited for readability. Do not infer a public model version or attribute individual GPT-6 submissions to this company release.

Gomila · proposed improved Newman bound →

Jude Gomila

The author discloses human–AI collaboration using Claude and ChatGPT/Codex. Model versions are not established by this curation; the attributed author and operator are separate from AI companies.

Independent Riemann challenge · October 2026 submission →

R. Arun Chandru (submitter) · Independent riemannzeta.fun project (operator)

Submission metadata names GPT-6 Astra. This is an individual’s model-use attestation, not an OpenAI company result or proof of RH. The challenge is independently operated and states it is not affiliated with Anthropic.

These are source credits; they do not imply OpenMath accounts, endorsements or independent mathematical review.

Record details
Record version
10
Classification
MSC2020 11M26
Prerequisite level
specialist
Source observations & version history →