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On the Infinitude of Composite NSW Numbers

2002· article· en· W3152751825 on OpenAlexaff
James A. Sellers, Hugh C. Williams

Bibliographic record

Venue˜The œFibonacci quarterly · 2002
Typearticle
Languageen
FieldMathematics
TopicAdvanced Mathematical Identities
Canadian institutionsUniversity of Manitoba
Fundersnot available
KeywordsPhilosophyMedicine

Abstract

fetched live from OpenAlex

approximately 20 years ago in connection with the order of certain simple groups. These are the numbers fn which satisfy the recurrence / » i = 6/w-/*-i 0) with initial conditions fi = l and f2 = 7. These numbers have also been studied in other contexts. For example, Bonk, Shapiro, and Simion [2] discuss them in relation to Schroder numbers and combinatorial statistics on lattice paths. Recently, Barcucci et al. [1] provided a combinatorial interpretation for the NSW numbers by defining a certain regular language 2J and studying particular properties of 2J. They close their note by asking two questions: 1. Do there exist infinitely many fn prime? 2. Do there exist infinitely many fn composite? The goal of this paper is to answer the second question affirmatively, but in a much broader context. Fix an integer k>2 and consider the sequence of values satisfying fn+l = kfn~~fn-\\> fi = l9 and f2 = k +1. Then we have the following theorem.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.005
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Theoretical or conceptual · Consensus signal: Theoretical or conceptual
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.003
Threshold uncertainty score0.011

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0010.005
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0020.001
Science and technology studies0.0020.004
Scholarly communication0.0020.005
Open science0.0010.002
Research integrity0.0010.002
Insufficient payload (model declined to judge)0.0030.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.047
GPT teacher head0.287
Teacher spread0.240 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designTheoretical or conceptual
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations4
Published2002
Admission routes1
Has abstractyes

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Same venue˜The œFibonacci quarterlySame topicAdvanced Mathematical IdentitiesFrench-language works237,207