Results 51 to 60 of about 409 (133)

Density‐Valued ARMA Models by Spline Mixtures

Journal of Time Series Analysis, EarlyView.
ABSTRACT This paper proposes a novel framework for modeling time series of probability density functions by extending autoregressive moving average (ARMA) models to density‐valued data. The method is based on a transformation approach, wherein each density function on a compact domain [0,1]d$$ {\left[0,1\right]}^d $$ is approximated by a B‐spline ...
Yasumasa Matsuda, Rei Iwafuchi
wiley   +1 more source

Quantum invariants: a study of knots, 3-manifolds, and their sets

, 2002
This book provides an extensive and self-contained presentation of quantum and related invariants of knots and 3-manifolds. Polynomial invariants of knots, such as the Jones and Alexander polynomials, are constructed as quantum invariants, i.e ...
Ohtsuki, Tomotada
core  

Large scale computations of 3-manifolds invariants

, 2022
La topologie est l'étude des objets à déformation près, sans couper ni coller: l'illustration la plus répandue est sans doute la transformation d'une tasse en donut.
Rouillé, Owen
core  

Penalized Convex Estimation in Dynamic Location Models

Journal of Time Series Analysis, EarlyView.
ABSTRACT This paper studies L1$$ {L}^1 $$‐penalized estimation for location models yt=mt+ϵt$$ {y}_t={m}_t+{\epsilon}_t $$, where mt$$ {m}_t $$ is defined by a possibly non‐Markovian recursion and ϵt$$ {\epsilon}_t $$ is a martingale difference sequence with possibly time‐varying conditional variance.
Reda Alami Chentoufi
wiley   +1 more source

Forecast Evaluation for Functional Data

Journal of Time Series Analysis, EarlyView.
ABSTRACT This paper proposes methods for comparing the accuracy of two competing sets of functional forecasts. This is increasingly relevant as many economic and financial forecasters are interested in predicting variables which are observed as functional data objects.
Jack Fosten, Piotr Kokoszka, Tim Kutta, Shixuan Wang   +3 more
wiley   +1 more source

Complexity of surgery manifolds and Cheeger-Gromov invariants

, 2015
We present new lower bounds on the complexity of Dehn surgery manifolds of knots, using our recent result on the Cheeger-Gromov. invariants and triangulations. As an application, we give explicit examples of closed hyperbolic 3-manifolds with fixed first
Cha, JC, Jae Choon Cha
core   +1 more source

Positive tree-like mapping classes [PDF]

, 2006
In this paper we will study special mapping classes of orientable surfaces with one boundary component. A mapping class is an element of the mapping class group. The mapping class group for an orientable surface S with boundary is defined as MCG(S) =
Gerber, Yvonne
core   +1 more source

Translating cardiovascular ion channel and Ca2+ signalling mechanisms into therapeutic insights

The Journal of Physiology, EarlyView.
Abstract figure legend This white paper integrates mechanistic discoveries across ion channel biology, Ca2+ signalling and multiscale cardiovascular physiology to highlight new opportunities for accelerating research and guiding next‐generation therapies. Printed with permission from ®Anita Impagliazzo Medical Illustration. [Correction added on 2 March
Silvia Marchianò, Miguel Martín‐Aragón Baudel, Charlotte E. R. Smith, Gonzalo Hernandez Hernandez, Donald M. Bers, Patrick M. Boyle, Dobromir Dobrev, Shanna Hamilton, Osama F. Harraz, Na Li, Thomas A. Longden, William E. Louch, Madeline Nieves‐Cintron, Matthew A. Nystoriak, Walter Lee Murfee, Przemysław B. Radwański, Swapnil K. Sonkusare, Manuel F. Navedo, Eleonora Grandi   +18 more
wiley   +1 more source

Reducing Parametric Problems With Discontinuities Using Deep Learning

Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 4, December 2026.
ABSTRACT Model order reduction becomes necessary when dealing with large‐scale engineering problems governed by parametric Partial Differential Equations (PDEs). Conventional projection based reduced basis methods, e.g., based on proper orthogonal decomposition, are not only intrusive in nature but may also demand tailored strategies to efficiently ...
Viral Chheda, Margarita Chasapi
wiley   +1 more source

The mod 2 Seiberg–Witten invariants of spin structures and spin families

Journal of Topology, Volume 19, Issue 4, December 2026.
Abstract We completely determine the mod 2 Seiberg–Witten invariants for any spin structure on any closed, oriented, smooth 4‐manifold X$X$. Our computation confirms the validity of the simple‐type conjecture mod 2 for spin structures. Our proof also works for families of spin 4‐manifolds and thus computes the mod 2 Seiberg–Witten invariants for spin ...
David Baraglia
wiley   +1 more source