Results 161 to 170 of about 71,844 (227)
Complex manifolds and Einstein’s equations
, 1982 We present a generalization of Penrose’s twistor theory based on the geometry of rational curves in complex manifolds. The analytical counterpart of this complex geometry consists, in the three simplest cases, of a system of differential equations closely connected with Einstein’s equations.
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Holomorphic field theories and higher algebra
Bulletin of the London Mathematical Society, EarlyView.Abstract Aimed at complex geometers and representation theorists, this survey explores higher dimensional analogs of the rich interplay between Riemann surfaces, Virasoro and Kac‐Moody Lie algebras, and conformal blocks. We introduce a panoply of examples from physics — field theories that are holomorphic in nature, such as holomorphic Chern‐Simons ...
Owen Gwilliam, Brian R. Williams
wiley +1 more source
Rigidity of Einstein manifolds of nonpositive curvature
, 1997 Man Chun Leung
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Kähler-Einstein manifolds of positive scalar curvature [PDF]
, 2001 Gang Tian
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Entropy maximizers for kinetic wave equations set on tori
Bulletin of the London Mathematical Society, EarlyView.Abstract We consider the kinetic wave equation, or phonon Boltzmann equation, set on the torus (physical system set on the lattice). We describe entropy maximizers for fixed mass and energy; our framework is very general, being valid in any dimension, for any dispersion relation, and even including the quantum kinetic wave equation.
Miguel Escobedo +3 more
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NMR in Biomedicine, Volume 38, Issue 10, October 2025.The choroid plexus (ChP) plays a key role in the brain's glymphatic system through its primary function of producing cerebrospinal fluid (CSF). In this study, we developed relaxation‐selective intravoxel incoherent motion (IVIM) MRI, including FLAIR‐IVIM, LongTE‐IVIM, and VASO‐LongTE‐IVIM, to assess age‐related changes in vascular and fluid ...
Chenyang Li +3 more
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Reading Research Quarterly, Volume 60, Issue 4, October/December 2025.ABSTRACT Critical K‐12 educators who teach students to question the status quo have always faced censorship, rebuke, and potential loss of livelihood. This risk is particularly heightened in conservative areas, like Texas, where ideological opposition to equity often results in legislative threats to ban literature and censor curriculum that addresses ...
Saba Khan Vlach
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Positional 13C enrichment analysis of aspartate determines PEPC activity in vivo
New Phytologist, Volume 248, Issue 1, Page 401-414, October 2025.Summary Photoautotrophic organisms fix inorganic carbon (Ci) by RIBULOSE‐1,5‐BISPHOSPHATE CARBOXYLASE/OXYGENASE (RUBISCO) and PHOSPHOENOLPYRUVATE CARBOXYLASE (PEPC). Monitoring Ci assimilation rates in vivo is a major challenge in analyzing photoautotrophic metabolism and engineering improved photosynthesis, as conventional methods do not distinguish ...
Luisa Wittemeier +4 more
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Broadly-Pluriminimal Submanifolds of Kaehler-Einstein Manifolds
, 2000 Isabel M. C. Salavessa, Giorgio Valli
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