Results 11 to 20 of about 2,875,390 (257)
3-dimensional piecewise linear and quadratic vector fields with invariant spheres [PDF]
Electronic Journal of Qualitative Theory of Differential EquationsWe consider the class $\mathcal{X}$ of $3$-dimensional piecewise smooth vector fields that admit a first integral which leaves invariant any sphere centered at the origin.
Claudio Buzzi +2 more
doaj +4 more sources
Multiphoton Quantum Reservoirs For Robust Multidimensional Computing. [PDF]
Adv Sci (Weinh)Projective measurements reveal hidden multidimensional quantum networks within classical multiphoton fields, enabling robust quantum reservoirs for room‐temperature quantum simulation, prediction, and information processing. These networks transform noisy classical photonic platforms into scalable quantum computational architectures.
Hong M +10 more
europepmc +2 more sources
Levels and sublevels of composition algebras over p-adic function fields [PDF]
, 2008 In [O'S], the level and sublevel of composition algebras are studied, wherein these quantities are determined for those algebras defined over local fields.
Van Geel, Jan +3 more
core +1 more source
An infinite family of pairs of imaginary quadratic fields with both class numbers divisible by five [PDF]
, 2017 We construct a new infinite family of pairs of imaginary quadratic fields with both class numbers divisible by five. Let n be a positive integer that satisfy n ≡ ±3 (mod 500) and n ≢ 0 (mod 3). We prove that 5 divides the class numbers of both Q(√) and Q(
Kishi, Yasuhiro +3 more
core +1 more source
Preprint: Machine Learning Class Numbers of Real Quadratic Fields
, 2022 We implement and interpret various supervised learning experiments involving real quadratic fields with class numbers 1, 2 and 3. We quantify the relative difficulties in separating class numbers of matching/different parity from a data-scientific ...
Amir, M. +4 more
core +1 more source
On the dualization of Born–Infeld theories
Physics Letters B, 2015 We construct a general Lagrangian, quadratic in the field strengths of n abelian gauge fields, which interpolates between BI actions of n abelian vectors and actions, quadratic in the vector field-strengths, describing Maxwell fields coupled to non ...
Laura Andrianopoli +2 more
doaj +1 more source
Quadratic vector fields with a weak focus of third order [PDF]
, 1997 We study phase portraits of quadratic vector fields with a weak focus of third order at the origin. We show numerically the existence of at least 20 different global phase portraits for such vector fields coming from exactly 16 different local phase ...
Jaume Llibre +5 more
core +1 more source
Higgsed Stueckelberg vector and Higgs quadratic divergence
Physics Letters B, 2015 Here we show that, a hidden vector field whose gauge invariance is ensured by a Stueckelberg scalar and whose mass is spontaneously generated by the Standard Model Higgs field contributes to quadratic divergences in the Higgs boson mass squared, and even
Durmuş Ali Demir +2 more
doaj +1 more source
Liu-type pretest and shrinkage estimation for the conditional autoregressive model.
PLoS ONE, 2023 Spatial regression models have recently received a lot of attention in a variety of fields to address the spatial autocorrelation effect. One important class of spatial models is the Conditional Autoregressive (CA). Theses models have been widely used to
Marwan Al-Momani
doaj +1 more source
Form factors and decoupling of matter fields in four-dimensional gravity
Physics Letters B, 2019 We extend previous calculations of the non-local form factors of semiclassical gravity in 4D to include the Einstein–Hilbert term. The quantized fields are massive scalar, fermion and vector fields.
Sebastián A. Franchino-Viñas +3 more
doaj +1 more source