Results 81 to 90 of about 25,635 (317)
Flag Matroids: Algebra and Geometry
, 2022 Matroids are ubiquitous in modern combinatorics. As discovered by Gel’fand, Goresky, MacPherson and Serganova there is a beautiful connection between matroid theory and the geometry of Grassmannians: representable matroids correspond to torus orbits in Grassmannians. Further, as observed by Fink and Speyer, general matroids correspond to classes in the
Cameron, Amanda +3 more
openaire +2 more sources
GEOMETRY OF DEFORMED BOSON ALGEBRAS [PDF]
Reviews in Mathematical Physics, 1996 We consider a phase space realisation of an infinite parameter family of deformations of the boson algebra in which the q-deformed algebras arise as special cases. The deformation parameters are identified with coefficients of non-linear terms in the normal forms expansion of a family of classical Hamiltonian systems.
Crehan, P., Ho, T. G.
openaire +3 more sources
Exact Discrete Stochastic Simulation With Deep‐Learning‐Scale Gradient Optimization
Advanced Science, EarlyView.A 203,796‐parameter gene regulatory network classifies handwritten digits with 98.4% accuracy using exact stochastic dynamics. The framework decouples forward simulation from backward differentiation, making continuous‐time Markov chain models compatible with deep‐learning optimization.
Jose M. G. Vilar, Leonor Saiz
wiley +1 more source
Algebraic discrete causal models [PDF]
, 2010 The main feature of the paper is to show that Algebraic Statistics is a natural framework to address issues of causality and to help discern a total cause.
Thwaites, Peter +2 more
core
Algebraic A-hypergeometric functions [PDF]
, 2010 We formulate and prove a combinatorial criterion to decide if an A-hypergeometric system of differential equations has a full set of algebraic solutions or not.
Beukers, F. +3 more
core +1 more source
Advanced Science, EarlyView.We report the solid‐state ball milling, a traditional, reliable, mass‐productive material processing, to prepare the air‐stable and dual‐phase GeSe2‐x nanoparticles with extended photodetection feasibility toward optical‐wavelength regions. We further display photonic multi‐valued logic (MVL) circuit through the employment of a hybrid PMMA/GeSe2‐x ...
An‐Ting Tsai +8 more
wiley +1 more source
Some Covariants Related to Steiner Surfaces [PDF]
, 2008 A Steiner surface is the generic case of a quadratically parameterizable quartic surface used in geometric modeling. This paper studies quadratic parameterizations of surfaces under the angle of Classical Invariant Theory.
Bruchou, Claude +4 more
core +1 more source
Beyond Algebraic Superstring Compactification: Part II
AxiomsThe 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
Updatable Closed‐Form Evaluation of Arbitrarily Complex Multiport Network Connections
Advanced Electronic Materials, EarlyView.The inverse design of electrically large wave devices often uses reduced‐order multiport models with discrete optimization, requiring many evaluations of complex interconnections between subsystems that differ only in a few blocks. This paper introduces a closed‐form framework enabling efficient Woodbury low‐rank updates of related, previous ...
Hugo Prod'homme, Philipp del Hougne
wiley +1 more source