Results 71 to 80 of about 762 (171)

Toric Geometry of the Regular Convex Polyhedra

open access: yesJournal of Mathematics, 2017
We describe symplectic and complex toric spaces associated with the five regular convex polyhedra. The regular tetrahedron and the cube are rational and simple, the regular octahedron is not simple, the regular dodecahedron is not rational, and the ...
Fiammetta Battaglia, Elisa Prato
doaj   +1 more source

Beyond Algebraic Superstring Compactification: Part II

open access: yesAxioms
The most impressively prolific exploration of superstring models (aiming for our physical reality) has been focused on worldsheet-supersymmetric gauged linear sigma models and the closely associated complex-algebraic toric geometry.
Tristan Hübsch
doaj   +1 more source

A Construction of Multisender Authentication Codes with Sequential Model from Symplectic Geometry over Finite Fields

open access: yesJournal of Applied Mathematics, 2014
Multisender authentication codes allow a group of senders to construct an authenticated message for a receiver such that the receiver can verify authenticity of the received message.
Shangdi Chen, Chunli Yang
doaj   +1 more source

AXIOMATIC INVESTIGATIONS ON SYMPLECTIC GEOMETRY

open access: yesDemonstratio Mathematica, 1993
Consider a commutative field \(F\), an \(F\)-vector space \(V\) (not necessarily of finite dimension), an alternating bilinear form \(\xi : V \times V \to F\), and the corresponding relations \(\|\) and \(\perp\) of parallelism and orthogonality on the set \(V\).
Muzalewski, Michał   +1 more
openaire   +1 more source

Geometric Models for Lie–Hamilton Systems on ℝ2

open access: yesMathematics, 2019
This paper provides a geometric description for Lie−Hamilton systems on R 2 with locally transitive Vessiot−Guldberg Lie algebras through two types of geometric models. The first one is the restriction of a class of Lie−Hamilton
Julia Lange, Javier de Lucas
doaj   +1 more source

Derived Symplectic Geometry

open access: yes
Review paper. This is an invited contribution to the 2nd edition of the Encyclopedia of Mathematical Physics.
openaire   +2 more sources

Formality and the Lefschetz property in symplectic and cosymplectic geometry

open access: yesComplex Manifolds, 2015
We review topological properties of Kähler and symplectic manifolds, and of their odd-dimensional counterparts, coKähler and cosymplectic manifolds. We focus on formality, Lefschetz property and parity of Betti numbers, also distinguishing the simply ...
Bazzoni Giovanni   +2 more
doaj   +1 more source

Modal Parameters Identification Method Based on Symplectic Geometry Model Decomposition

open access: yesShock and Vibration, 2019
This paper proposes a novel method of structural system modal identification, where the iterative method is introduced in symplectic geometric model decomposition (SGMD).
Hang Jin   +3 more
doaj   +1 more source

Toric Degenerations in Symplectic Geometry

open access: yes, 2022
A toric degeneration in algebraic geometry is a process where a given projective variety is being degenerated into a toric one. Then one can obtain information about the original variety via analyzing the toric one, which is a much easier object to study.
openaire   +2 more sources

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