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Record W1557471974 · doi:10.18910/57676

Zero mean curvature surfaces in Lorentz--Minkowski 3-space which change type across a light-like line

2015· article· en· W1557471974 on OpenAlex
Shoichi Fujimori, Y. W. Kim, Sung Eun Koh, Wayne Rossman, Hyeonjoon Shin, Masaaki Umehara, Koji Yamada, Seong-Deog Yang

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

VenueOsaka City University (Osaka City University) · 2015
Typearticle
Languageen
FieldMathematics
TopicGeometric Analysis and Curvature Flows
Canadian institutionsToronto Metropolitan University
FundersJapan Society for the Promotion of Science
KeywordsMinkowski spaceMathematicsLorentz transformationCurvatureZero (linguistics)Mean curvatureGravitational singularityLorentz spaceSpace (punctuation)Plane (geometry)Hyperboloid modelType (biology)Line (geometry)Mathematical analysisCorollarySurface (topology)Constant-mean-curvature surfaceMathematical physicsGeometryCenter of curvaturePure mathematicsPhysicsClassical mechanics

Abstract

fetched live from OpenAlex

It is well-known that space-like maximal surfaces and time-like\nminimal surfaces in Lorentz--Minkowski $3$-space $\\boldsymbol{R}^{3}_{1}$\nhave singularities in general. They are both characterized\nas zero mean curvature surfaces. We are interested in the\ncase where the singular set consists of a light-like line,\nsince this case has not been analyzed before. As a continuation\nof a previous work by the authors, we give the first example\nof a family of such surfaces which change type across a light-like\nline. As a corollary, we also obtain a family of zero mean\ncurvature hypersurfaces in $\\boldsymbol{R}^{n+1}_{1}$ that\nchange type across an ($n-1$)-dimensional light-like plane.

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)0.001
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: Not applicable · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.782
Threshold uncertainty score0.999

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.001
Meta-epidemiology (narrow)0.0010.001
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0010.010
Science and technology studies0.0010.000
Scholarly communication0.0000.001
Open science0.0020.001
Research integrity0.0010.001
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 head0.088
GPT teacher head0.274
Teacher spread0.186 · 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