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SYMPLECTIC: 作品数：225被引量：349H指数：9; 导出分析报告; 相关领域：理学更多>>; 相关作者：杨磊宋国杰马啸张朝元蔡文君更多>>; 相关机构：大理学院西南石油大学清华大学哈尔滨工业大学更多>>; 相关期刊：更多>>; 相关基金：国家自然科学基金国家重点基础研究发展计划国家教育部博士点基金中国博士后科学基金更多>>

Cross-subcarrier precoder design for massive MIMO-OFDM downlink with symplectic optimization: 《Science China(Information Sciences)》2025年第2期212-225,共14页Yuxuan ZHANG An-An LU Xiang-Gen XIA Xiqi GAO; supported by National Natural Science Foundation of China(Grant Nos.62394294,62394290,62371125);Jiangsu Province Basic Research Project(Grant No.BK20192002);Jiangsu Province Major Science and Technology Project(Grant No.SBG2024000080);Fundamental Research Funds for the Central Universities(Grant No.2242022k60007);Key R&D Plan of Jiangsu Province(Grant No.BE2022067);Huawei Cooperation Project。; We propose a cross-subcarrier precoder design(CSPD)for massive multiple-input multiple-output(MIMO)orthogonal frequency division multiplexing(OFDM)downlink.This work aims to significantly improve the channel estimatio...; 关键词：massive MIMO-OFDM cross subcarrier precoder design transform domain precoding vectors effective channel symplecticoptimization

A High-Order Meshless Energy-Preserving Algorithm for the Beam Equation: 《Communications in Mathematical Research》2024年第4期413-436,共24页Jialing Wang Yali He; supported by the National Natural Science Foundation of China(Grant No.11801277).; In this paper,a meshless energy-preserving algorithm which can be arbitrarily high-order in temporal direction for the beam equation has been proposed.Based on the method of lines,we first use the radial basis func-ti...; 关键词：Beam equation meshless scheme energy-preserving method radial basis function symplectic Runge-Kutta method.

Symplectic Conditions on Grassmannian,Flag,and Schubert Varieties: 《Communications in Mathematical Research》2024年第2期154-190,共37页Jiajun Xu Guanglian Zhang; In this paper,a description of the set-theoretical defining equations of symplectic(type C)Grassmannian/flag/Schubert varieties in corresponding(type A)algebraic varieties is given as linear polynomials in Plucker coo...; 关键词：Grassmannian variety generalized flag variety Schubert variety Plucker embedding complete intersection.

Structure-Preserving Recurrent Neural Networks for a Class of Birkhoffian Systems被引量：1: 《Journal of Systems Science & Complexity》2024年第2期441-462,共22页XIAO Shanshan CHEN Mengyi ZHANG Ruili TANG Yifa; supported by the National Natural Science Foundation of China under Grant Nos.12171466 and 12271025.; In this paper,the authors propose a neural network architecture designed specifically for a class of Birkhoffian systems—The Newtonian system.The proposed model utilizes recurrent neural networks(RNNs)and is based on...; 关键词：BIRKHOFFIAN system k(z t)-symplectic NEURAL NETWORKS RECURRENT NEURAL network

One-cycles on Gushel-Mukai fourfolds and the Beauville-Voisin filtration: 《Science China Mathematics》2024年第4期713-732,共20页Ruxuan Zhang; We prove that the invariant locus of the involution associated with a general double EisenbudPopescu-Walter(EPW)sextic is a constant cycle surface and introduce a filtration on CH1of a Gushel-Mukai fourfold.We verify ...; 关键词：Beauville-Voisin ltration irreducible holomorphic symplectic variety Gushel-Mukai fourfold

Proton-neutron symplectic model description of ^(106)Cd: 《Chinese Physics C》2024年第3期169-179,共11页H.G.Ganev; In this study,a microscopic shell-model description of the low-lying collective states in the weakly deformed nucleus ^(106)Cd within the recently proposed microscopic version of the Bohr-Mottelson model is provided.A...; 关键词：shell-model version of the Bohr-Mottelson model proton-neutron symplectic model Sp(12 R)dynamical algebra quadrupole dynamics

Microscopic shell-model description of irrotational-flow dynamics in^(102)Pd被引量：1: 《Chinese Physics C》2024年第1期82-93,共12页H.G.Ganev; The structure of the low-lying collective excitations in 102Pd is examined within the recently proposed microscopic shell-model version of the Bohr-Mottelson(BM)collective model.A good description of the excitation en...; 关键词：shell-model version of the Bohr-Mottelson model irrotational-flow dynamics proton-neutron symplectic model Sp(12 R)dynamical algebra

Normal Crossings Singularities for Symplectic Topology:Structures: 《Acta Mathematica Sinica,English Series》2024年第1期107-160,共54页Mohammad FARAJZADEH-TEHRANI Mark MCLEAN Aleksey ZINGER; Supported by NSF grants DMS-2003340(F.Tehrani);DMS-1811861(Mclean);DMS-1901979(Zinger)。; Our previous papers introduce topological notions of normal crossings symplectic divisor and variety,show that they are equivalent,in a suitable sense,to the corresponding geometric notions,and establish a topological...; 关键词：Normal crossings divisor Chern class Logarithmic tangent bundle

Hamiltonian system for the inhomogeneous plane elasticity of dodecagonal quasicrystal plates and its analytical solutions被引量：1: 《Chinese Physics B》2024年第1期581-590,共10页孙志强侯国林乔艳芬刘金存; Project supported by the National Natural Science Foundation of China (Grant Nos.12261064 and 11861048);the Natural Science Foundation of Inner Mongolia,China (Grant Nos.2021MS01004 and 2022QN01008);the High-level Talents Scientific Research Start-up Foundation of Inner Mongolia University (Grant No.10000-21311201/165)。; A Hamiltonian system is derived for the plane elasticity problem of two-dimensional dodecagonal quasicrystals by introducing the simple state function. By using symplectic elasticity approach, the analytic solutions o...; 关键词：Hamiltonian system symplectic elasticity QUASICRYSTALS analytic solution state function

The First Cohomology of osp(1,2)with Coefficients in Baby Verma Modules and Simple Modules: 《Algebra Colloquium》2023年第4期599-614,共16页Shujuan Wang Wende Liu; This work is supported by Heilongjiang Provincial Natural Science Foundation of China(YQ2020A005);Natural Science Foundation of China(12061029).; Over a field of characteristic p>0,the first cohomology of the orthogonal symplectic Lie superalgebra osp(1,2)with coefficients in baby Verma modules and simple modules is determined by use of the weight space decompo...; 关键词：orthogonal symplectic Lie superalgebras baby Verma modules simple modules COHOMOLOGY

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