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Record W1994431896 · doi:10.1112/plms/pdl002

The spine of a Fourier-Stieltjes algebra

2006· article· en· W1994431896 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

VenueProceedings of the London Mathematical Society · 2006
Typearticle
Languageen
FieldMathematics
TopicAdvanced Operator Algebra Research
Canadian institutionsUniversity of WaterlooLakehead University
Fundersnot available
KeywordsMathematicsHomomorphismLocally compact spaceLocally compact groupGroup algebraAbelian groupAmenable groupBounded functionGroup (periodic table)CombinatoricsQuotientLattice (music)Algebra over a fieldPure mathematicsDiscrete mathematicsMathematical analysis

Abstract

fetched live from OpenAlex

We define the spine A *(G) of the Fourier–Stieltjes algebra B (G) of a locally compact group G. This algebra encodes information about much of the fine structure of B (G), particularly information about certain homomorphisms and idempotents. We show that A *(G) is graded over a certain semi-lattice, that of non-quotient locally precompact topologies on G. We compute the spine's spectrum G*, which admits a semi-group structure. We discuss homomorphisms from A *(G) to B (H) where H is another locally compact group; and we show that A *(H) contains the image of every completely bounded homomorphism from the Fourier algebra A (H) of any amenable group G. We also show that A *(G) contains all of the idempotents in B (G). Finally, we compute examples for vector groups, abelian lattices, minimally almost periodic groups and the (ax + b)-group; and we explore the complexity of A *(G) for the discrete rational numbers and free groups.

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)0.002
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 score0.117
Threshold uncertainty score0.504

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.002
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.001
Bibliometrics0.0000.001
Science and technology studies0.0000.001
Scholarly communication0.0000.000
Open science0.0010.000
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 head0.019
GPT teacher head0.294
Teacher spread0.275 · 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