Results 41 to 50 of about 912,180 (214)

On the Uniqueness of Ricci Flow

open access: yesThe Journal of Geometric Analysis, 2018
All comments are welcome!
openaire   +2 more sources

Almost hyperbolic Ricci solitons on almost co-Ka¨hler manifolds

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы
This research investigates almost hyperbolic Ricci solitons on almost co-K¨ahler manifolds, an important class of odd-dimensional manifolds closely related to Ka¨hler geometry.
S. Azami, U.C. De
doaj   +1 more source

Pseudolocality for the Ricci Flow and Applications [PDF]

open access: yesCanadian 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   +2 more
openaire   +2 more sources

Geometry In The Large Of Ricci Flows [PDF]

open access: yes, 2022
Ricci flow is a powerful and fundamentally innovative tool in the field of geometric analysis introduced by Richard Hamilton [Ha82] in 1982. Many longstanding geometric and topological problems have been solved using Ricci flow. For example, the Poincaré
Ma, Zilu
core   +1 more source

Modified Naiver-Stokes equation for conceptual tests of pure field physics

open access: yesEPJ Web of Conferences, 2018
Cartesian relativistic physics has its own nondual analog of the 1915 Einstein Equation for pure field physics in nonempty space. This tensor field analog leads to the vector geodesic equations for relativistic accelerations of Ricci material densities ...
Bulyzhenkov Igor E.
doaj   +1 more source

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

open access: yesEntropy, 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   +4 more
doaj   +1 more source

Development and Validation of a Cellulose‐Coated Stir Bar Sorptive Extraction Method for a Simple, Environmentally Friendly Approach to Measuring Free Glycerol in Biodiesel

open access: yesJournal of the American Oil Chemists' Society, EarlyView.
Preparation of a highly porous cellulose‐coated stir bar for the selective, environmentally friendly extraction of free glycerol from biodiesel using the SBSE method, followed by HPLC‐DAD analysis of the extract after derivatization with benzoyl chloride.
Caroline Lopes da Silva   +3 more
wiley   +1 more source

A note on conformal Ricci flow [PDF]

open access: yesPacific 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

Advanced Mathematical Extensions of Data Field Theory: Hyperbolic Geometry, Gauge Theory, and Higher Structures

open access: yesAdvanced Physics Research, EarlyView.
This graphical abstract illustrates the unified framework of Data Field Theory (DFT), integrating hyperbolic geometry for hierarchical embedding, gauge theory for internal symmetries, renormalization group for multi‐scale dynamics, Lévy processes for heavy‐tailed fluctuations, noncommutative geometry for quantum‐inspired cognition, and higher ...
Mohammadreza Nehzati
wiley   +1 more source

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

open access: yesBusiness 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   +2 more
wiley   +1 more source

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