Results 81 to 90 of about 20,711 (219)
Reverse isoperimetric inequalities for Lagrangian intersection Floer theory
Bulletin of the London Mathematical Society, Volume 58, Issue 2, February 2026.Abstract We extend Groman and Solomon's reverse isoperimetric inequality to pseudoholomorphic curves with punctures at the boundary and whose boundary components lie in a collection of Lagrangian submanifolds with intersections locally modelled on Rn∩(Rk×−1Rn−k)$\mathbb {R}^n\cap (\mathbb {R}^{k}\times \sqrt {-1}\mathbb {R}^{n-k})$ inside Cn$\mathbb {C}
J. ‐P. Chassé, J. Hicks, Y. J. Nho
wiley +1 more source
On geodesic mappings of threesymmetric spaces
Pracì Mìžnarodnogo Geometričnogo CentruThe paper is devoted to the study of properties of pseudo-Riemannian spaces admitting nontrivial geodesic mappings. Necessary and sufficient conditions are found for A-threesymmetric spaces to admit nontrivial geodesic mappings.
Volodymyr Kiosak +2 more
doaj +1 more source
BIHARMONIC PSEUDO-RIEMANNIAN SUBMANIFOLDS IN PSEUDO-EUCLIDEAN SPACES
Kyushu Journal of Mathematics, 1998 Let \(x:M^n \to E ^m _s\) be an isometric immersion of a pseudo-Riemannian \(n\)-manifold \(M\) into the pseudo-Euclidean space \(E ^m _s\) of signature \(s\). The immersion is called biharmonic if the immersion vector \(x\) satisfies the equation \(\Delta ^2 x = 0\), where \(\Delta\) is the Laplace operator on \(M\).
CHEN, Bang-Yen, ISHIKAWA, Susumu
openaire +2 more sources
Annalen der Physik, Volume 538, Issue 1, January 2026.The BRST invariant Lagrangian of the gravitationally interacting U(1)$U(1)$ gauge theory, namely the Quantum GraviElectro Dynamics (QGED). The Yan–Mills theory with the Hilbert–Einstein gravitational Lagrangian, namely the Yang–Mills–Utiyama (YMU) theory, is defined and quantised using the standard procedure. The theory is perturbatively renormalisable,
Yoshimasa Kurihara
wiley +1 more source
Pseudo-Riemannian Geodesic Orbit Nilmanifolds of Signature (n-2,2)
The geodesic orbit property is useful and interesting in itself, and it plays a key role in Riemannian geometry. It implies homogeneity and has important classes of Riemannian manifolds as special cases.
Joseph A Wolf (20530841) +3 more
core +1 more source
Hopf hypersurfaces in pseudo-Riemannian complex and para-complex space forms
, 2015 The study of real hypersurfaces in pseudo-Riemannian complex space forms and para-complex space forms, which are the pseudo-Riemannian generalizations of the complex space forms, is addressed.
Panagiotidou, Konstantina +1 more
core +1 more source
Uniqueness of curvature measures in pseudo-Riemannian geometry
, 2020 The recently introduced Lipschitz-Killing curvature measures on pseudo-Riemannian manifolds satisfy a Weyl principle, i.e. are invariant under isometric embeddings. We show that they are uniquely characterized by this property.
Solanes, Gil +2 more
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The classification problem for pseudo-Riemannian symmetric spaces [PDF]
, 2008 Riemannian and pseudo-Riemannian symmetric spaces with semisimple transvection group are known and classified for a long time. Contrary to that the description of pseudo-Riemannian symmetric spaces with non-semisimple transvection group is an open problem. In the last years some progress on this problem was achieved.
Kath, Ines, Olbrich, Martin
openaire +2 more sources
Vector‐Based and Machine Learning Approaches for Pore Network Parameters Analysis
Geophysical Prospecting, Volume 74, Issue 1, January 2026.ABSTRACT Accurate characterization of pore structures in carbonate rocks is critical for evaluating fluid flow and storage capacity in subsurface reservoirs, a key concern in geophysical exploration and reservoir engineering. This study proposes a hybrid digital rock physics workflow that integrates deep learning–based segmentation, vectorial geometric
José Frank V. Gonçalves +4 more
wiley +1 more source
Torsional Newton Cartan gravity from non-relativistic strings
Journal of High Energy Physics, 2020 We study propagation of closed bosonic strings in torsional Newton-Cartan geometry based on a recently proposed Polyakov type action derived by dimensional reduction of the ordinary bosonic string along a null direction. We generalize the Polyakov action
A.D. Gallegos, U. Gürsoy, N. Zinnato
doaj +1 more source