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Record W2541916123 · doi:10.1109/icm-02.2002.1161523

A generalized transform, grouping, Fourier, Laplace and Z transforms

2004· article· en· W2541916123 on OpenAlexaff
M.J. Corinthios

Bibliographic record

Venuenot available
Typearticle
Languageen
FieldEngineering
TopicAdvanced Numerical Analysis Techniques
Canadian institutionsPolytechnique MontréalUniversité de Montréal
FundersUniversity of Cambridge
KeywordsLaplace transformLaplace transform applied to differential equationsMathematicsTwo-sided Laplace transformFourier transformMellin transformFractional Fourier transformMathematical analysisInverse Laplace transformFourier inversion theoremFourier analysis

Abstract

fetched live from OpenAlex

The following is a summary description of some research results that were taught to students over many years and communicated by the author in IEEE Proceedings submission, in the book proposals, and poster sessions. A generalized transform, grouping Fourier and Laplace transform in the continuous-time domain and Fourier and z transform in the discrete-time domain is proposed. A generalized formalism is obtained for the continuous time domain and a similar one for the discrete time domain. The key to the existence of a generalized formalism and transform is based on a generalization of the formalism of generalized functions, and the Dirac-delta impulse in particular. A generalization of the Dirac-delta impulse is proposed, both in the continuous time domain and in the discrete time domain. The generalization of the impulse leads to a considerable extension of the domain of existence of Laplace and z transforms. Functions and sequences that have impulsive Fourier transforms and hitherto no Laplace or z transform are rendered within the region of convergence of these transforms. More importantly, a large class of functions and sequences that have no Fourier transform, such as two-sided infinite duration growing exponentials and exponentially diverging sinusoids, now have Laplace and z transforms. Two generalized impulses, namely, the Xi and Zeta impulses, defined on the complex transform plane are proposed. These generalized impulses may provide the missing link that bridges the gap between the theory of generalized functions as it applies to the Fourier transform and the more general Laplace and z transforms.

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)0.002
metaresearch head score (Gemma)0.003
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: Methods · Consensus signal: Methods
Teacher disagreement score0.003
Threshold uncertainty score0.011

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0020.003
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0010.001
Bibliometrics0.0020.003
Science and technology studies0.0010.004
Scholarly communication0.0030.006
Open science0.0010.002
Research integrity0.0010.003
Insufficient payload (model declined to judge)0.0030.002

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 head0.005
GPT teacher head0.214
Teacher spread0.209 · 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
GenreMethods

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

Citations2
Published2004
Admission routes1
Has abstractyes

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