Results 61 to 70 of about 2,836 (190)
Süleyman Demirel Üniversitesi Fen-Edebiyat Fakültesi Fen Dergisi, 2013 : In the present note we have considered Mn to be a Riemannian manifold admitting a semi-symmetric recurrent metric connection. The aim of the present paper is to obtain the conditions under which the quasi-conformal curvature tensor and M-projective ...
Rajesh Kumar, Jagannath Chowdhury
doaj
On formal Riemannian metrics [PDF]
Analele Universitatii "Ovidius" Constanta - Seria Matematica, 2012 Abstract Formal Riemannian metrics are characterized by the property that all products of harmonic forms are again harmonic. They have been studied over the last ten years and there are still many interesting open conjectures related to geometric formality.The existence of a formal metric implies Sullivan's formality of the manifold, and hence formal ...
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Gendered Harmony and Unsung Collections: Two Debussy Rabbit Holes
Music Analysis, EarlyView.ABSTRACT This review article on Mark McFarland's The Musical Relationship between Claude Debussy and Igor Stravinsky (2024) offers a critical reading of this recent text and treats its content as a springboard for the exploration of two issues untapped in existing musicological discourse.
Rajan Lal
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Symmetry, Integrability and Geometry: Methods and Applications, 2010 In this note we prove that the Heisenberg group with a left-invariant pseudo-Riemannian metric admits a completely integrable totally geodesic distribution of codimension 1. This is on the contrary to the Riemannian case, as it was proved by T. Hangan.
Wafaa Batat, Salima Rahmani
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On the Design of Model Predictive Setpoint Controllers for Nonholonomic Multibody Systems
Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 4, December 2026.ABSTRACT Systems subject to constraints that are not integrable to position‐level constraints pose significant challenges for setpoint control. In particular, conventional linearization techniques may fail to yield controllable approximations, since certain directions of motion are only accessible through higher‐order interactions of the control inputs.
Mario Rosenfelder +2 more
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Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 4, December 2026.ABSTRACT Strain‐space reduced cubature techniques such as the Empirically Corrected Cluster Cubature (E3C) considerably reduce the integration effort incurred in computational homogenisation problems. In this work, we apply E3C in tandem with projection‐based model reduction techniques utilising both linear and quadratic approximation spaces.
Erik Faust, Dong Zhao, Lisa Scheunemann
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On the Kobayashi metrics in Riemannian manifolds
Proceedings of the American Mathematical SocietyWe define the Kobayashi distance and the Kobayashi-Royden infinitesimal metric on any smooth Riemannian manifold ( M , g
Gaussier, Hervé, Sukhov, Alexandre
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On the space of Riemannian metrics [PDF]
Bulletin of the American Mathematical Society, 1968 1. Results. In the present announcement we are concerned with the space of Riemannian metrics on a compact smooth manifold. Let M be such a manifold, 5T* the bundle of symmetric covariant twotensors on Mf and C°°(S T*) the smooth sections of this bundle, endowed with the C topology.
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A Spike‐Based Graph Surrogate for Modeling Finite Element Structures
Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 4, December 2026.ABSTRACT The use of Artificial Intelligence (AI) in structural mechanics has grown substantially in the recent years, with diverse applications ranging from constitutive laws and Gauss‐point‐level enhancements to the complete replacement of classical Finite Element Methods (FEM) with surrogate models.
Vaishnav Bhaskaran +2 more
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Inverse problems for semilinear elliptic PDE with a general nonlinearity a(x,u)$a(x,u)$
Transactions of the London Mathematical Society, Volume 13, Issue 1, December 2026.Abstract This article studies the inverse problem of recovering a nonlinearity in an elliptic equation Δu+a(x,u)=0$\Delta u + a(x,u) = 0$ from boundary measurements of solutions. Previous results based on first‐order linearization achieve this under a sign condition on ∂ua(x,u)$\partial _u a(x,u)$, and results based on higher order linearization ...
David Johansson +2 more
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