Results 51 to 60 of about 462,161 (175)

A relative Poincaré–Birkhoff theorem

open access: yesBulletin of the London Mathematical Society, Volume 58, Issue 7, July 2026.
Abstract A. Moreno and Otto van Koert proved a generalised version of the classical Poincaré–Birkhoff theorem, for Liouville domains of any dimension. In this article, we prove a relative version for Lagrangians with Legendrian boundary. This gives interior chords of arbitrary large length, provided that the twist condition introduced by Moreno and van
Agustin Moreno, Arthur Limoge
wiley   +1 more source

Ideal CR submanifolds in non-flat complex space forms [PDF]

open access: yes, 2014
summary:An explicit representation for ideal CR submanifolds of a complex hyperbolic space has been derived in T. Sasahara (2002). We simplify and reformulate the representation in terms of certain Kähler submanifolds.
Sasahara, Toru
core   +1 more source

Wall–chamber decompositions for generalised Monge–Ampère equations

open access: yesJournal of the London Mathematical Society, Volume 114, Issue 1, July 2026.
Abstract Generalised Monge–Ampère (gMA) equations form a large class of PDE including Donaldson's J‐equation, inverse Hessian equations, some supercritical deformed Hermitian–Yang–Mills (dHYM) equations and some Z‐critical equations. Solvability of these equations is characterised by numerical criteria involving intersection numbers over all ...
Sohaib Khalid   +1 more
wiley   +1 more source

A generalization of Cayley submanifolds

open access: yes, 2000
Given a Kaehler manifold of complex dimension 4, we consider submanifolds of (real) dimension 4, whose Kaehler angles coincide. We call these submanifolds Cayley. We investigate some of their basic properties, and prove that (a) if the ambient manifold is a Calabi-Yau, the minimal Cayley submanifolds are just the Cayley submanifolds as defined by ...
openaire   +4 more sources

Contact Normal Submanifolds and Contact Generic Normal Submanifolds in Kenmotsu Manifolds

open access: yesRevista Matemática Complutense, 1991
Let \(M\) be a Kenmotsu manifold or Kenmotsu space form. In this paper, the author studies contact normal and contact generic normal submanifolds and shows that, under certain conditions, they are CR-manifolds, spaces of constant curvature, locally symmetric and Einstein manifolds.
openaire   +3 more sources

Identifiability of points and rigidity of hypergraphs under algebraic constraints

open access: yesJournal of the London Mathematical Society, Volume 114, Issue 1, July 2026.
Abstract The identifiability problem arises naturally in a number of contexts in mathematics and computer science. Specific instances include local or global rigidity of graphs and unique completability of partially‐filled tensors subject to rank conditions.
James Cruickshank   +3 more
wiley   +1 more source

f-Biminimal submanifolds of generalized space forms

open access: yesCommunications Faculty Of Science University of Ankara Series A1Mathematics and Statistics, 2019
Summary: We study \(f\)-biminimal submanifolds in generalized complex space forms and generalized Sasakian space forms. Then, we analyze \(f\)-biminimal submanifolds in these spaces. Finally, we consider \(f\)-biminimal integral submanifolds in Sasakian space forms and give an example.
openaire   +5 more sources

Isotopies of complete minimal surfaces of finite total curvature

open access: yesJournal of the London Mathematical Society, Volume 114, Issue 1, July 2026.
Abstract Let M$M$ be a Riemann surface biholomorphic to an affine algebraic curve. We show that the inclusion of the space ℜNC∗(M,Cn)$\Re \mathrm{NC}_*(M,\mathbb {C}^n)$ of real parts of nonflat proper algebraic null immersions M→Cn$M\rightarrow \mathbb {C}^n$, n⩾3$n\geqslant 3$, into the space CMI∗(M,Rn)$\mathrm{CMI}_*(M,\mathbb {R}^n)$ of complete ...
Antonio Alarcón   +2 more
wiley   +1 more source

An elementary approach to Wehrl‐type entropy bounds in quantitative form

open access: yesProceedings of the London Mathematical Society, Volume 133, Issue 1, July 2026.
Abstract We consider the problem of the stability (with sharp exponent) of the Lieb–Solovej inequality for symmetric SU(N)$SU(N)$ coherent states, which was obtained only recently by the authors. Here, we propose an elementary proof of this result, based on reformulating the Wehrl‐type entropy as a function defined on the unit sphere in Cd$\mathbb {C ...
Fabio Nicola   +2 more
wiley   +1 more source

Reflection Ideals and mappings between generic submanifolds in complex space

open access: yes, 2002
International audienceResults on finite determination and convergence of formal mappings between smooth generic submanifolds in $\C^N$ are established in this paper.
Nordine Mir   +5 more
core   +1 more source

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