MétaCan
Menu
Back to cohort
Record W2051680363 · doi:10.1002/zamm.200310034

The Courant‐Herrmann conjecture

2003· article· en· W2051680363 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

VenueZAMM ‐ Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik · 2003
Typearticle
Languageen
FieldMathematics
TopicNonlinear Partial Differential Equations
Canadian institutionsUniversity of CalgaryUniversity of Waterloo
Fundersnot available
KeywordsConjectureEigenfunctionSign (mathematics)CombinatoricsMathematicsEigenvalues and eigenvectorsLambdaDirichlet distributionHelmholtz equationMathematical physicsPhysicsMathematical analysisQuantum mechanics

Abstract

fetched live from OpenAlex

Abstract The Courant‐Herrmann Conjecture (CHC) concerns the sign properties of combinations of the Dirichlet eigenfunctions of elliptic pde's, the most important of which is the Helmholtz equation $\Delta u + \lambda \rho u = 0$ for \documentclass{article}\usepackage{amssymb}\pagestyle{empty}\begin{document}$D \in \mathbb{R}^N$\end{document} . If the eigenvalues are ordered increasingly, CHC states that the nodal set of a combination $v = \sum_{i=1}^nc_iu_i$ of the first $n$ eigenfunctions, divides $D$ into no more than $n$ sign domains in which $v$ has one sign. The conjecture is classically known to hold for $N=1$ , we conjecture that it is true for rectangular boxes in \documentclass{article}\usepackage{amssymb}\pagestyle{empty}\begin{document}$\mathbb{R}^N (N\geq2)$\end{document} , but show that it is false in general.

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)0.003
metaresearch head score (Gemma)0.001
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Theoretical or conceptual · Consensus signal: Theoretical or conceptual
GenreCandidate signal: Methods · Consensus signal: none
Teacher disagreement score0.527
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0030.001
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0000.000
Science and technology studies0.0010.000
Scholarly communication0.0000.000
Open science0.0010.000
Research integrity0.0000.001
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 head0.027
GPT teacher head0.304
Teacher spread0.276 · 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