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Record W2231042379 · doi:10.1093/imrn/rnv345

Upper Bounds for the First Eigenvalue of the Laplacian on Non-Orientable Surfaces

2015· article· en· W2231042379 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenueInternational Mathematics Research Notices · 2015
Typearticle
Languageen
FieldMathematics
TopicGeometric Analysis and Curvature Flows
Canadian institutionsMcGill University
Fundersnot available
KeywordsMathematicsUpper and lower boundsEigenvalues and eigenvectorsConformal mapLaplace operatorGenusSimple (philosophy)Argument (complex analysis)Manifold (fluid mechanics)Riemannian manifoldSurface (topology)Pure mathematicsCombinatoricsZero (linguistics)Mathematical analysisGeometryBotanyQuantum mechanics

Abstract

fetched live from OpenAlex

In 1980, Yang and Yau [20] proved the celebrated upper bound for the first eigenvalue on an orientable surface of genus |$\gamma $|⁠. Later Li and Yau [14] gave a simple proof of this bound by introducing the concept of conformal volume of a Riemannian manifold. In the same paper, they proposed an approach for obtaining a similar estimate for non-orientable surfaces. In the present paper, we formalize their argument and improve the bounds stated in [14].

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.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.004
metaresearch head score (Gemma)0.006
Version: codex-gemma-dda1882f352aValidation 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 score0.293
Threshold uncertainty score0.769

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0040.006
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.001
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0020.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

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 head0.216
GPT teacher head0.435
Teacher spread0.219 · 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