Results 71 to 80 of about 550,626 (282)
Mathematical Methods in the Applied Sciences, EarlyView.ABSTRACT We study eigenvalue problems for the de Rham complex on varying three‐dimensional domains. Our analysis includes the Helmholtz equation as well as the Maxwell system with mixed boundary conditions and non‐constant coefficients. We provide Hadamard‐type formulas for the shape derivatives under weak regularity assumptions on the domain and its ...
Pier Domenico Lamberti +2 more
wiley +1 more source
Donaldson-Thomas invariants and wall-crossing formulas
, 2014 Notes from the report at the Fields institute in Toronto. We introduce the Donaldson-Thomas invariants and describe the wall-crossing formulas for numerical Donaldson-Thomas invariants.Comment: 18 pages.
A. Bayer +8 more
core +1 more source
Weak Solutions for a Class of Nonlocal Singular Problems Over the Nehari Manifold
Mathematical Methods in the Applied Sciences, EarlyView.ABSTRACT In this paper, we consider a nonlocal model of dilatant non‐Newtonian fluid with a Dirichlet boundary condition. By using the Nehari manifold and fibering map methods, we obtain the existence of at least two weak solutions, with sign information.
Zhenfeng Zhang +2 more
wiley +1 more source
Positive Psychology in Spain: a portrait of a vigorous field of research
Anales de PsicologiaPositive Psychology has been alive for almost two decades and it is a good moment to take stock and, most importantly, present a set of studies that allow us to identify trends, interests, methodologies and results that are being generated within our ...
Gonzalo Hervas
doaj +1 more source
, 2006 This is a monograph on the designer-maker John Hinchcliffe and charts his work from textiles to ceramics. This was published to coincide with a major exhibtion of his work at the Crafts Study Centre.
Olding, Simon
core +1 more source
PLANTS, PEOPLE, PLANET, EarlyView.The advancement of digital technologies has brought a rapid global information exchange, impacting all areas of our lives. This also applies to science. Knowledge, conservation and scientific innovation on global biodiversity are being strengthened and disseminated at unprecedented scales.
Ana Flávia Alves Versiane +9 more
wiley +1 more source
Le vieillissement des électeurs communistes à l’épreuve des vicissitudes du communisme municipal
Lien Social et Politiques, 2017 Le comportement électoral des anciens électeurs communistes au sein des quartiers populaires a souvent fait l’objet de controverses. Si une partie des recherches insistent sur la fidélité électorale qui continue de caractériser les générations ouvrières,
David Gouard
doaj +1 more source
An SO(3)-monopole cobordism formula relating Donaldson and Seiberg-Witten invariants
, 2018 We prove an analogue of the Kotschick-Morgan conjecture in the context of SO(3) monopoles, obtaining a formula relating the Donaldson and Seiberg-Witten invariants of smooth four-manifolds using the SO(3)-monopole cobordism. The main technical difficulty
Feehan, Paul M. N., Leness, Thomas G.
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Tracing holotype trajectories: Mapping the movement of the most valuable herbarium specimens
PLANTS, PEOPLE, PLANET, EarlyView.Global efforts to protect biodiversity depend on fair access to key plant specimens. This study examines the distribution of 119,361 holotypes—unique herbarium specimens used to formally describe new plant species. By linking collection and storage data, we found that holotypes are increasingly held closer to their places of origin, particularly in ...
Dominik Tomaszewski +2 more
wiley +1 more source
Matthew Burt: idea to object [PDF]
, 2008 A monograph outlining the career and the practice of the Wiltshire-based furniture designer-maker Matthew Burt.
Olding, Simon
core +1 more source