Corpus definition canonical 2026-05-27T20:53:50+00:00
Corpus v3 · Definition cid001443DEF0213canonicalv1

Brun Sieve Count

Brun sieve: count integers in [1..n] coprime to first d primes. Inclusion-exclusion at depth d. B(30,3)=8=φ(30).

Payload

Brun Sieve Count

Brun sieve: count integers in [1..n] coprime to first d primes. Inclusion-exclusion at depth d. B(30,3)=8=φ(30).

Brun Sieve Count

Summary

Brun sieve: count integers in [1..n] coprime to first d primes. Inclusion-exclusion at depth d. B(30,3)=8=φ(30).

Statement

\label{def:brun-sieve-count}
$B(n, d) := \#\{k \in [1,n] : \gcd(k, M_d) = 1\}$, the inclusion-exclusion
count of integers coprime to the first~$d$ primes.

\textbf{Lean:} \texttt{brun\_sieve\_count}.\quad
\textbf{Registry:} III.D101.

Proof / Justification

This item is definitional. No manuscript proof is required.

Source Context

  • Registry source: book-03.jsonl line 253
  • Manuscript source: 2nd-edition/book-iii-categorical-spectrum/02_mainmatter/part10/ch81-additive-conjectures-deep.tex lines 99-105

Lean / Formalization Notes

  • Formalization: formalized
  • Module: TauLib.BookIII.Spectral.SieveInfrastructure
  • Name: brun_sieve_count

Dependencies

  • Canonical: III.D99

Generated by later projection phases.

Generated by later projection phases.

Revision Notes

  • 2026-04-24: Initial pilot migration.

Identifiers

  • Corpus ID cid001443
  • Primary alias DEF0213
  • Type Definition
  • Status canonical
  • Visibility public
  • Version v1

Aliases & legacy IDs

III.D101brun-sieve-countdef:brun-sieve-count

Release lines

corpus_v3_workingcorpus_v2

Relations

Formalized by (1)

Appears in (1)

Downstream uses (computed) (2)

Items in the corpus that reference this one via load-bearing relations. Computed from the full corpus-v3 graph at build time.

Sources

  • Monograph cid000024Book III, Part 10, Chapter 81 (Wave R1)

Version & History

  • v1 · 2026-05-10 imported from v2 registry
  • v1 · 2026-05-10 wired formalized by in wave 5

Status disclaimer

A Corpus Item page reports the program's current internal record for this item. It does not imply external verification, scientific consensus, or final proof unless explicitly stated. Read it together with its dependencies, formalization status, and the program's overall stance.

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