Results 41 to 50 of about 1,913,155 (139)
On Tensorial Concomitants and the Non-Existence of a Gravitational Stress-Energy Tensor [PDF]
, 2009 Based on an analysis of what it may mean for one tensor to depend in the proper way on another, I prove that, under certain natural conditions, there can be no tensor whose interpretation could be that it represents gravitational stress-energy in general
Curiel, Erik
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SYMPLECTIC CONNECTIONS WITH PARALLEL RICCI TENSOR [PDF]
, 2020 We dedicate this work to the memory of S. Zakrzewski Abstract. A variational principle introduced to select some symplectic connections leads to field equations which, in the case of the Levi Civita connection of Kähler manifolds, are equivalent to the ...
J O H N R A W N S L E Y
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Fortschritte der Physik, Volume 74, Issue 4, April 2026.Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
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Collagen organisation in the fibrous joint capsules in the digits of the human hand
Journal of Anatomy, Volume 248, Issue 4, Page 612-623, April 2026.The function of the finger joints is important for daily life. In this review of the literature, we consider the role of collagen and its organization within the fibrous finger joint capsules of the interphalangeal (IP) joints and investigate the relationships between collagen orientation and joint function. Abstract Normal function of the hand and, in
Fiona R. Saunders +3 more
wiley +1 more source
A Re‐Examination of Foundational Elements of Cosmology
Fortschritte der Physik, Volume 74, Issue 3, March 2026.ABSTRACT This paper undertakes a conceptual re‐examination of several foundational elements of cosmology through the lens of spacetime symmetries. A new derivation of the Friedmann–Lemaître–Robertson–Walker metric is obtained by a careful conceptual examination of rotations and translations on generic manifolds, followed by solving the rotational and ...
Lavinia Heisenberg
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Molecular Oncology, Volume 20, Issue S1, Page 1-692, August 2026.Abstracts submitted to the ‘EACR 2026 Congress: Innovative Cancer Science’, from 08–11 June 2026 and accepted by the Congress Organising Committee are published in this Supplement of Molecular Oncology, an affiliated journal of the European Association for Cancer Research (EACR).
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Advanced Science, Volume 13, Issue 7, 3 February 2026.This work shows, for the first time, that the stereocilia membrane in cochlear hair cells is dynamically regulated by the mechanotransduction channel to impact the membrane mechanical properties. This work provides direct evidence that the opening and closing associated with the MET channel is regulating the membrane viscosity suggesting that the MET ...
Shefin S. George, Anthony J. Ricci
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Geometry of Ricci tensor of harmonic nearly trans - Sasakian manifolds
In this paper, we study the geometry of the Ricci tensor of a harmonic nearly trans - Sasakian manifold. On the space of associated $G$-structure we introduce fundamental identities of harmonic nearly trans - Sasakian manifolds.
Svetlana Vladimirovna Kharitonova +1 more
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Weyl structures with positive Ricci tensor [PDF]
, 2003 We prove the vanishing of the first Betti number on compact manifolds admitting a Weyl structure whose Ricci tensor satisfies certain positivity conditions, thus obtaining a Bochner-type vanishing theorem in Weyl geometry. We also study compact Hermitian–
B Alexandrov +3 more
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D'Atri spaces and the total scalar curvature of hemispheres, tubes and cylinders. [PDF]
Rev Mat Complut, 2023 Csikós B, Elnashar A, Horváth M.
europepmc +1 more source