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A Three-Point Characterization of Central Symmetry

2004· article· en· W2028973787 on OpenAlexaff
G. D. Chakerian, M. S. Klamkin

Bibliographic record

VenueAmerican Mathematical Monthly · 2004
Typearticle
Languageen
FieldDecision Sciences
TopicProbability and Risk Models
Canadian institutionsUniversity of Alberta
Fundersnot available
KeywordsSubsequenceMathematicsCombinatoricsSequence (biology)Permutation (music)Longest increasing subsequenceIndependent and identically distributed random variablesCentral limit theoremLimit (mathematics)Discrete mathematicsRandom permutationRandom variableMathematical analysisSymmetric groupStatistics

Abstract

fetched live from OpenAlex

1. It is tempting to believe that any sequence (?n) that is C6saro-convergent in probability necessarily has a subsequence that is a.s. C6saro-convergent. This is not true however. As an example, take an independent identically distributed sequence that satisfies the weak but not the strong law of large numbers (e.g., any symmetric distribution without first moment but with tails slightly smaller than Cauchy). 2. If we drop the nonnegativity, Observation 1 becomes false. Consider, for example, the constants (1)n log n. But if every permutation of a sequence of arbitrarily signed random variables is a.s. C6saro-convergent to a finite limit, does the sequence satisfy condition (A)? We do not know. 3. S. D. Chatterji [4] has already given versions of the subsequence theorem for ?n in LP with p < 1, but with a factor n-'/P instead of n-1. A nice review paper is [5]. 4. More recently, E. P6ter [7] gave sufficient criteria describing general distributional limit laws for which a permutation invariant version of the subsequence principle holds, in the same way that Berkes's result improves Koml6s's 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)0.003
metaresearch head score (Gemma)0.011
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: none
Teacher disagreement score0.015
Threshold uncertainty score0.050

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0030.011
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0010.001
Bibliometrics0.0020.001
Science and technology studies0.0020.007
Scholarly communication0.0030.007
Open science0.0020.003
Research integrity0.0020.003
Insufficient payload (model declined to judge)0.0150.002

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 head0.044
GPT teacher head0.317
Teacher spread0.272 · 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

Citations3
Published2004
Admission routes1
Has abstractyes

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