Results 41 to 50 of about 801 (189)

Pseudolocality for the Ricci Flow and Applications [PDF]

Canadian Journal of Mathematics, 2011
Abstract Perelman established a differential Li-Yau-Hamilton (LYH) type inequality for fundamental solutions of the conjugate heat equation corresponding to the Ricci flow on compact manifolds. As an application of the LYH inequality, Perelman proved a pseudolocality result for the Ricci flow on compact manifolds. In this article we provide the details
Chau, Albert, Tam, Luen-Fai, Yu, Chengjie   +2 more
openaire   +2 more sources

Lymphatic Abnormalities in Noonan Syndrome Extend Beyond Clinically Apparent Disease

American Journal of Medical Genetics Part A, EarlyView.
ABSTRACT Lymphatic disease represents a well‐described manifestation of Noonan syndrome (NS), yet the full phenotypic spectrum remains incompletely characterized, especially in asymptomatic individuals. We conducted a cross‐sectional study including 10 individuals with NS (four with peripheral lymphedema and six without) and 10 age‐ and sex‐matched ...
Inger Norlyk Sheyanth, Benjamin Kelly, Sheyanth Mohanakumar, Steffen Ringgaard, Yoav Dori, Irene Kibæk Nielsen, Uffe Birk Jensen, Vibeke Elisabeth Hjortdal   +7 more
wiley   +1 more source

Entropy of Reissner–Nordström 3D Black Hole in Roegenian Economics

Entropy, 2019
The subject of this paper is to analyse the Mathematical Principia of Economic 3D Black Holes in Roegenian economics. In detail, we study two main problems: (i) mathematical origin of economic 3D black holes; and (ii) entropy and internal political ...
Constantin Udriste, Massimiliano Ferrara, Ionel Tevy, Dorel Zugravescu, Florin Munteanu   +4 more
doaj   +1 more source

Remote Roca: Integrating Data From Archaeological Survey, Remote Sensing and Geophysics in the Hinterland at the Long‐Lasting Mediterranean Site of Rocavecchia (Apulia, Italy)

Archaeological Prospection, EarlyView.
ABSTRACT This study presents a multi‐method non‐invasive investigation of an approximately 4‐ha area associated with the long‐occupied coastal settlement of Rocavecchia (Apulia, southern Italy), situated between the prehistoric fortified peninsula and the Hellenistic‐Messapian walls.
Giuseppe Guarino, Francesco Iacono, Giovanna Agostini, Davide Susini   +3 more
wiley   +1 more source

Regularising the Ricci Flow Embedding [PDF]

, 2010
This paper concerns the analysis of patterns that are specified in terms of non-Euclidean dissimilarity or proximity rather than ordinal values. In prior work we have reported a means of correcting or rectifying the similarities so that the non-Euclidean artifacts are minimized.
Weiping Xu, Edwin R. Hancock, Richard C. Wilson 0001   +2 more
openaire   +1 more source

A note on conformal Ricci flow [PDF]

Pacific Journal of Mathematics, 2014
In this note we study conformal Ricci flow introduced by Arthur Fischer. We use DeTurck's trick to rewrite conformal Ricci flow as a strong parabolic-elliptic partial differential equations. Then we prove short time existences for conformal Ricci flow on compact manifolds as well as on asymptotically flat manifolds.
Lu, Peng, Qing, Jie, Zheng, Yu
openaire   +5 more sources

Measuring Corporate Alignment With the Circular Economy: a Text‐Based Circularity Index From Mandatory Non‐Financial Disclosures

Business Strategy and the Environment, EarlyView.
ABSTRACT The transition to a circular economy (CE) has become a strategic priority for firms, yet empirical assessments of corporate circularity remain fragmented and heavily dependent on structured indicators or self‐reported metrics. This paper proposes a novel, text‐based circularity index derived from mandatory non‐financial statements of large ...
Giuseppe Pernagallo, Francesco Quatraro, Eleonora Rubichi   +2 more
wiley   +1 more source

The Impact of Socio-Economic Challenges and Technological Progress on Economic Inequality: An Estimation with the Perelman Model and Ricci Flow Methods [PDF]

SocioEconomic Challenges
The article examines the impact of 16 key parameters of the Georgian economy on economic inequality, using the Perelman model and Ricci flow mathematical methods.
Davit Gondauri
doaj   +1 more source

Climate Adequacy and Market Risk: Are They Related? Empirical Evidence From the European Equity Market Before and After the Adoption of the Paris Agreement

Business Strategy and the Environment, EarlyView.
ABSTRACT ESG ratings, and in particular environmental scores (E‐scores), are becoming increasingly relevant for financial stability and capital allocation decisions. This paper investigates the relationship between corporate environmental performance and market risk, as measured through value at risk (VaR) and expected shortfall (ES), the key metrics ...
Matilda Shini, Igor Gianfrancesco, Antonia Patrizia Iannuzzi, Vittorio Dell'Atti   +3 more
wiley   +1 more source

The Ricci flow for nilmanifolds

Journal of Modern Dynamics, 2010
We consider the Ricci flow for simply connected nilmanifolds, which translates to a Ricci flow on the space of nilpotent metric Lie algebras. We consider the evolution of the inner product and the evolution of structure constants, as well as the evolution of these quantities modulo rescaling.
openaire   +2 more sources