Results 61 to 70 of about 1,647 (169)

Incompatible deformations in solids with hyperbolic thermoelasticity

Вестник Самарского университета: Естественнонаучная серия
The present study aims to develop a theory of incompatible deformations and evolutionary problems for media with hyperbolic heat conductivity. The specificity of the problem lies in the fact that, although it seems preferable to adopt Hamilton’s ...
K. G. Koifman
doaj   +1 more source

Spacetime Deformation-Induced Inertia Effects

Advances in Mathematical Physics, 2012
We construct a toy model of spacetime deformation-induced inertia effects, in which we prescribe to each and every particle individually a new fundamental constituent of hypothetical 2D, so-called master space (MS), subject to certain rules.
Gagik Ter-Kazarian
doaj   +1 more source

Topological and geometric rigidity of nonnegatively curved submanifolds

Bulletin of the London Mathematical Society, Volume 58, Issue 10, October 2026.
Abstract We investigate the topology and geometry of compact submanifolds in space forms of nonnegative curvature satisfying a lower bound on the sectional curvature that depends only on the length of the mean curvature vector of the immersion. We show that this condition imposes strong constraints on either the topology or geometry of the submanifold.
Theodoros Vlachos
wiley   +1 more source

On the geometry of WDVV equations and their Hamiltonian formalism in arbitrary dimension

Journal of the London Mathematical Society, Volume 114, Issue 4, October 2026.
Abstract It is known that in low dimensions Witten–Dijkgraaf–Verlinde–Verlinde (WDVV) equations can be rewritten as commuting quasilinear bi‐Hamiltonian systems. We extend some of these results to arbitrary dimension N$N$ and arbitrary scalar product η$\eta$.
S. Opanasenko, R. Vitolo
wiley   +1 more source

On the properties of stationary configurations of a rotating self-gravitating ideal fluid with a vortex gravitational field [PDF]

Известия Саратовского университета. Новая серия: Физика
Background and Objectives: Within the framework of Einstein’s general-relativistic theory of gravity, that is, the general theory of relativity (GR), the properties of stationary distributions of a self-gravitating rotating continuous medium in the
Krechet, Vladimir G., Oshurko, Vadim Borisovich, Kisser, Alexey Eduardovich   +2 more
doaj   +1 more source

Optimal bounds for the Kobayashi distance near C2$\mathcal {C}^2$‐smooth boundary points

Journal of the London Mathematical Society, Volume 114, Issue 4, October 2026.
Abstract It is shown that the optimal upper and lower bounds for the Kobayashi distance near C2,α$\mathcal {C}^{2,\alpha }$‐smooth strongly pseudoconvex boundary points obtained in Kosiński, Nikolov, and Ökten [Adv. Math. 478 (2025), 110388] remain true in the general C2$\mathcal {C}^2$‐smooth strongly pseudoconvex setting.
Nikolai Nikolov, Pascal J. Thomas
wiley   +1 more source

Wasserstein rigidity over Rn$\mathbb {R}^n$ with smooth norms

Mathematika, Volume 72, Issue 4, October 2026.
Abstract We study p−Wasserstein$p-{\rm Wasserstein}$ spaces Wp(Rn,dN)$ \mathcal {W}_p(\mathbb {R}^n, d_N)$ over Rn$\mathbb {R}^n$ equipped with a norm metric dN$d_N$. We show that, if the norm is smooth enough, then the Wasserstein space is isometrically rigid whenever p≠2$p \ne 2$.
Zoltán M. Balogh, Eric Ströher, Tamás Titkos, Dániel Virosztek   +3 more
wiley   +1 more source

Exact four-parameter rotating NS-NS vacuum in double field theory

Journal of High Energy Physics
We construct an exact rotating vacuum of the NS-NS sector, equivalently a Double Field Theory vacuum. The construction applies compact SO(2) S-duality to a rotating Einstein-scalar seed.
Hun Jang, Minkyoo Kim, Jeong-Hyuck Park
doaj   +1 more source

Lower Bounds for the Integrated and Minimax Risks in Intrinsic Statistical Estimation: A Geometric Approach

Mathematics
In parametric statistics, it is well established that the canonical measures of estimator performance—such as bias, variance, and mean squared error—are inherently dependent on the parameterization of the model.
José Manuel Corcuera, José María Oller   +1 more
doaj   +1 more source

Riemannian Geometry of the Local Class Transition Tensor

This supplement provides rigorous mathematical derivations of the Riemannian structure induced by the transition tensor Tcc′j. It includes: (1) the complete derivation of the Christoffel symbols, (2) the sectional curvature and its properties, (3) the Bianchi identities with proofs, (4) the Gauss-Bonnet theorem for the simplex, (5) the formal ...
openaire   +2 more sources