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COMPACTIFICATION: 作品数：35被引量：19H指数：2; 导出分析报告; 相关领域：理学更多>>; 相关期刊：《Journal of Mathematical Research with Applications》《Science China Mathematics》《Science China(Physics,Mechanics & Astronomy)》《Acta Mathematica Sinica,English Series》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福建省自然科学基金更多>>

Effects of Compactification on Free Massive Scalar Fields in Five-Dimensional Space-Time with an Extra Time Dimension: Analysing Some Results: 《Journal of Modern Physics》2023年第12期1600-1616,共17页Sajjad Zahir; This paper deals with some aspects of two-time physics (i.e., 2T + 3S five-dimensional space) for a Minkowski-like space with distinct speeds of causality for the time dimensions. Detailed calculations are provided to...; 关键词：Two-Time Physics Theory of Special Relativity Kaluza-Klein Theory COMPACTIFICATION Klein-Gordon Equation TACHYONS Abelian Gauge Theory

Extra Time Dimension: Deriving Relativistic Space-Time Transformations, Kinematics, and Example of Dimensional Compactification Using Time-Dependent Non-Relativistic Quantum Mechanics: 《Journal of Modern Physics》2023年第10期1333-1354,共22页Sajjad Zahir; We consider a five-dimensional Minkowski space with two time dimensions characterized by distinct speeds of causality and three space dimensions. Formulas for relativistic coordinate and velocity transformations are d...; 关键词：Two-Time Physics Special Theory of Relativity Kaluza-Klein Theory Time-Dependent Schrödinger Equation COMPACTIFICATION

An Application of Set Theory in Quasi-Paracompactness: 《Journal of Mathematical Research with Applications》2022年第6期653-657,共5页Xiangeng ZHOU Shou LIN; the National Natural Science Foundation of China (Grant No. 12171015);the Natural Science Foundation of Fujian Province (Grant Nos. 2020J01428;2020J05230); In 1977,Yingming Liu introduced quasi-paracompactness and proved that under 2^(ω1)>2~ωevery separable normal quasi-paracompact space is a paracompact space,which is a result of set-theoretic topology.In this paper w...; 关键词：quasi-paracompact space weak continuum hypothesis irreducible space ω1-compact space Stone-Cech compactification

PHASE PORTRAITS OF THE LESLIE-GOWER SYSTEM: 《Acta Mathematica Scientia》2022年第5期1734-1742,共9页Jaume LLIBRE Claudia VALLS; supported by the Agencia Estatal de Investigacion grant PID2019-104658GB-I00;the H2020 European Research Council grant MSCA-RISE-2017-777911;partially supported by FCT/Portugal through CAMGSD,IST-ID,projects UIDB/04459/2020 and UIDP/04459/2020.; In this paper we characterize the phase portraits of the Leslie-Gower model for competition among species.We give the complete description of their phase portraits in the Poincarédisc(i.e.,in the compactification of ...; 关键词：predator-prey models Leslie-Gower system Poincare compactification global phaseportraits

An Expository on Some Nonstandard Compactifications: 《Advances in Pure Mathematics》2021年第10期807-815,共9页Alagu Somasundaram Rukhmoni Kala; Three classical compactification procedures are presented with nonstandard flavour. This is to illustrate the applicability of Nonstandard analytic tool to beginners interested in Nonstandard analytic methods. The gen...; 关键词：Non-Standard COMPACTIFICATION Completely Regular Space Locally Compact Hausdorff Space Locally Compact Abelian Group

Moduli Space of Quasi-Polarized K3 Surfaces of Degree 6 and 8: 《Chinese Annals of Mathematics,Series B》2021年第3期427-450,共24页Zhiyuan LI Zhiyu TIAN; supported by the National Natural Science Foundation of China(Nos.11771076,11731004,118771155,831013,11890662);National Kay Research and Development Program of China(No.2020YFA0713200);Shanghai Education Commission(No.17SG01).; In this paper,the authors study the moduli space of quasi-polarized complex K3 surfaces of degree 6 and 8 via geometric invariant theory.The general members in such moduli spaces are complete intersections in projecti...; 关键词：K3 surfaces GIT Noether-Lefschetz divisor Looijenga compactification

Proof That Spatial Transitions Release/Absorb Energy That Compactification Necessarily Leads to Changes in Volume, Energy and Entropy: 《Journal of High Energy Physics, Gravitation and Cosmology》2019年第2期310-320,共11页Christopher Pilot; Using simple box quantization, we demonstrate explicitly that a spatial transition will release or absorb energy, and that compactification releases latent heat with an attendant change in volume and entropy. Increasi...; 关键词：SPATIAL TRANSITIONS Box Quantization COMPACTIFICATION

NO<sub>2</sub>Excited State Properties Revisited: An Effect of Extra Compactified Dimensions: 《Journal of Modern Physics》2017年第11期1749-1761,共13页Hans-Georg Weber; Experiments on NO2 reveal a substructure underlying the optically excited isolated hyperfine structure (hfs) levels of the molecule. This substructure is seen in a change of the symmetry of the excited molecule and is...; 关键词：EXTRA DIMENSIONS COMPACTIFICATION Space DARK Matter Molecular Physics

FREDHOLM OPERATORS ON THE SPACE OF BOUNDED SEQUENCES: 《Acta Mathematica Scientia》2016年第2期614-634,共21页Egor A.ALEKHNO; Necessary and sufficient conditions are studied that a bounded operator Tx =（x1^＊x, x2^＊x,…） on the space e∞, where xn^＊∈e∞^＊, is lower or upper semi-Fredholm; in particular, topological properties of the se...; 关键词：Fredholm operator space e∞ Stone-Cech compactification βN

Doubled conformal compactification: 《Science China(Physics,Mechanics & Astronomy)》2014年第9期1630-1636,共7页SUN ZhaoYong TIAN Yu; supported by the National Natural Science Foundation of China(Grant Nos.11075206 and 11175245); We use Weyl transformations between the Minkowski spacetime and dS/AdS spacetime to show that one cannot well define the electrodynamics globally on the ordinary conformal compactification of the Minkowski spacetime(o...; 关键词：conformal transformations ELECTRODYNAMICS doubled Penrose diagrams conformal compactification

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