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Almost Injective Mappings of Totally Bounded Metric Spaces into Finite Dimensional Euclidean Spaces
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作者 Gábor Sági 《Advances in Pure Mathematics》 2019年第6期555-566,共12页
Let χ= be a metric space and let ε be a positive real number. Then a function f: X→Y is defined to be an ε-map if and only if for all y∈Y, the diameter of f-1(y)?is at most ε. In Theorem 10 we will give a new pr... Let χ= be a metric space and let ε be a positive real number. Then a function f: X→Y is defined to be an ε-map if and only if for all y∈Y, the diameter of f-1(y)?is at most ε. In Theorem 10 we will give a new proof for the following well known fact: if χ is totally bounded, then for all ε there exists a finite number n and a continuous ε-map fε: X→Rn (here Rn is the usual n-dimensional Euclidean space endowed with the Euclidean metric). If ε is “small”, then fε is “almost injective”;and still exists even if χ has infinite covering dimension (in this case, n depends on ε, of course). Contrary to the known proofs, our proof technique is effective in the sense, that it allows establishing estimations for n in terms of ε and structural properties of χ. 展开更多
关键词 Totally BOUNDED Metric spaceS dimension Theory Finite dimensional euclidean spaceS ε-Mapping
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The Mass and Size of Photons in the 5-Dimensional Extended Space Model
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作者 V. A. Andreev D. Yu. Tsipenyuk 《Journal of Modern Physics》 2016年第11期1308-1315,共8页
We propose the generalization of Einstein’s special theory of relativity (STR). In our model, we use the (1 + 4)-dimensional space G, which is the extension of the (1 + 3)-dimensional Minkowski space M. As a fifth ad... We propose the generalization of Einstein’s special theory of relativity (STR). In our model, we use the (1 + 4)-dimensional space G, which is the extension of the (1 + 3)-dimensional Minkowski space M. As a fifth additional coordinate, the interval S is used. This value is constant under the usual Lorentz transformations in M, but it changes when the transformations in the extended space G are used. We call this model the Extended space model (ESM). From a physical point of view, our expansion means that processes in which the rest mass of the particles changes are acceptable now. In the ESM, gravity and electromagnetism are combined in one field. In the ESM, a photon can have a nonzero mass and this mass can be either positive or negative. It is also possible to establish in the frame of ESM connection between mass of a particle and its size. 展开更多
关键词 Photon MASS SIZE 5-dimensional space Extended space Model GRAVITATION Special Theory of Relativity
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Lorentz Transform in Multi-Dimensional Space
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作者 I. A. Urusovskii 《Journal of Modern Physics》 2012年第11期1749-1756,共8页
It is shown that in Euclidean space with any number of spatial dimensions more than three, the Lorentz transform holds true if the proper time of each elementary particle is proportional to the length of its path in t... It is shown that in Euclidean space with any number of spatial dimensions more than three, the Lorentz transform holds true if the proper time of each elementary particle is proportional to the length of its path in the extra-dimensional subspace, and all elementary particles move at the speed of light in the complete space. The six-dimensional treatment of the Coulomb force of interaction between two charges is given. The electric force is due to the motion of charges in the extra-dimensional subspace and is equal to the corresponding Lorentz force. 展开更多
关键词 LORENTZ Transform euclidean Multi-dimensional space COMPTON Wave Length De BROGLIE Waves SPIN and Isotopic SPIN HEISENBERG Uncertainty CPT Symmetry COULOMB Force
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Euclidean Model of Space and Time 被引量:1
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作者 Radovan Machotka 《Journal of Modern Physics》 2018年第6期1215-1249,共35页
The aim of this work is to show that the currently widely accepted geometrical model of space and time based on the works of Einstein and Minkowski is not unique. The work presents an alternative geometrical model of ... The aim of this work is to show that the currently widely accepted geometrical model of space and time based on the works of Einstein and Minkowski is not unique. The work presents an alternative geometrical model of space and time, a model which, unlike the current one, is based solely on Euclidean geometry. In the new model, the pseudo-Euclidean spacetime is replaced with a specific subset of four-dimensional Euclidean space. The work shows that four-dimensional Euclidean space allows explanation of known relativistic effects that are now explained in pseudo-Euclidean spacetime by Einstein’s Special Theory of Relativity (STR). It also shows simple geometric-kinematical nature of known relativistic phenomena and among others explains why we cannot travel backward in time. The new solution is named the Euclidean Model of Space and Time (EMST). 展开更多
关键词 SPECIAL Theory of RELATIVITY euclidean space Four-dimensional space Time DILATION LENGTH CONTRACTION
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Preliminary Exploration on Properties of the Equidistant Conjugate Points of Higher Dimensional Simplex
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作者 ZENG Jian-guo 《Chinese Quarterly Journal of Mathematics》 CSCD 2013年第1期77-81,共5页
In this paper, the concept of the equidistant conjugate points of a triangle to the n-dimensional Euclidean space is extended. The concept of equidistant conjugate point in high dimensional simplex is defined, and the... In this paper, the concept of the equidistant conjugate points of a triangle to the n-dimensional Euclidean space is extended. The concept of equidistant conjugate point in high dimensional simplex is defined, and the property of the equidistant conjugate points of a triangle is generalized to high dimensional simplex. 展开更多
关键词 SIMPLEX equidistant conjugate point n-dimensional euclidean space kdimensional spatial (k+1)-polygon
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A Creation Model from the Gell-Mann Standard Model to the Creation of Bio Cells: Based on the Assumption of Homogeneous 5D Space-Time Universe
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作者 Kai Wai Wong Wan Ki Chow 《Journal of Modern Physics》 2020年第7期1058-1074,共17页
In this paper, we briefly go over the homogeneous 5D model field theory: from the 5D space-time inception, to its quantum field solutions given in terms of Higgs vacuum, filled with magnetic monopole bose fields of al... In this paper, we briefly go over the homogeneous 5D model field theory: from the 5D space-time inception, to its quantum field solutions given in terms of Higgs vacuum, filled with magnetic monopole bose fields of all energies. Then through the space dimension reduction projections, the Gell-Mann standard model was obtained as well as a quantum to Classical connection was made via introducing Bose distribution to the monopoles to obtain the Perelman entropy and Ricci Flow mappings. This provided us a picture to the creation of Astronomical objects, from galaxies to stars and planets. This method of splitting the monopole energy into ranges is extended to show that below the basic rest mass range of the electron and Quark, it still can be applied to explaining for the creation of the chemical elements periodic table. But perhaps the most interesting is in the lowest hundreds of Hz energy range, obtained from yet another 3 fold space symmetry breaking, into 2D × 1D, producing bio nitrogenous bases composed of 3 Carbon 12 in hexagon structures, due to preservation of the 1D monopole standing waves of this low frequencies. From that by imposing gauge changes the monopole states into DNA spectra. Since such spectra states retain the DLRO, it induces formation of charge carriers periodicity in a spherical bio cell.. It was then argued that due to cell’s surface proteins, the structure must contain partial filled VB, with “p” state hole density, and empty CB, separated from VB by a positive band gap. Such band structures resemble known HTC Cuprate ceramics. Since the HTC goes through a Superconductivity transition via the simultaneous bose exciton condensation, providing a Coulomb pressure, which reduces the band gap substantially, and induces the ODLRO transition of the hole density. The same obviously applies to the bio cells. Because of the near continuous exciton levels generated, a matching to the DNA spectra then can always occur by selective choices of proteins on the cell surface. Judging from a numerical study, we did years ago on YBCO, with doping. We found with a large enough VB hole density, the exciton induced superconducting gap can easily lead to <em>T</em><em>c</em> in the room temperature range. In fact by EMF excitation can increase the exciton pressure and trigger the ODLRO transition <em>T</em><em>c</em> upward. In fact, numerical results then suggest there do exist coherent EMF spectra from three key elements: Water, Carbon and Hydrogen, together with Oxygen, as studied over the years by numerous people, starting from Schr<span style="white-space:nowrap;">&ouml;</span>dinger to most recently Geesink. 展开更多
关键词 5D Fermat’s Theorem space dimension Reduction Projections Perelman Mappings The Higgs Vacuum: A B.E. Condensed Monopole Bosons Realization of Excitonic Induced Superconducting “p” Valence Band Orbitals in Bio Cells The Final Coherent Building Block EMF Spectra: Water Carbon Hydrogen and Oxygen
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5-维欧氏空间球面曲线的一个几何性质 被引量:1
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作者 薛艳昉 冯艳丽 李玲玲 《成都大学学报(自然科学版)》 2012年第4期327-330,共4页
利用Frenet公式讨论了5-维欧氏空间中球面曲线的几何特征,给出了判定一条空间曲线是球面曲线的一个充分必要条件.
关键词 FRENET公式 5-维欧氏空间 球面曲线
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Uniqueness of Common Fixed Points for a Family of Mappings with <i>Φ</i>-Contractive Condition in 2-Metric Spaces 被引量:9
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作者 Yong-Jie Piao 《Applied Mathematics》 2012年第1期73-77,共5页
In this paper, we will introduce a class of 5-dimensional functions Φ and prove that a family of self-mappings {Ti,j} iεN in 2-metric space have an unique common fixed point if 1) {Ti,j} iεN satisfies Φj-contracti... In this paper, we will introduce a class of 5-dimensional functions Φ and prove that a family of self-mappings {Ti,j} iεN in 2-metric space have an unique common fixed point if 1) {Ti,j} iεN satisfies Φj-contractive condition, where ΦjεΦ, for each jεN;2) Tm,μ n,v for all m,n,μ,vεN with μ ≠ v . Our main result generalizes and unifies many known unique common fixed point theorems in 2-metric spaces. 展开更多
关键词 2-Metric space 5-dimensional Functions Φ Φ-Contractive CONDITION CAUCHY Sequence Common Fixed Point
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A Family of Non-Self Maps Satisfying <i>Φ</i><sub>i</sub>-Contractive Condition and Having Unique Common Fixed Point in Metrically Convex Spaces 被引量:1
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作者 Yongjie Piao Dongzhe Piao 《Advances in Pure Mathematics》 2012年第4期280-284,共5页
Class of 5-dimensional functions Φ was introduced and a convergent sequence determined by non-self mappings satisfying certain Φi-contractive condition was constructed, and then that the limit of the sequence is the... Class of 5-dimensional functions Φ was introduced and a convergent sequence determined by non-self mappings satisfying certain Φi-contractive condition was constructed, and then that the limit of the sequence is the unique com-mon fixed point of the mappings was proved. Finally, several more general forms were given. Our main results gener-alize and unify many same type fixed point theorems in references. 展开更多
关键词 Metrically Convex space 5-dimensional Functions Φ Φi-Contractive CONDITION Common Fixed Point Complete
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Unique Common Fixed Point for a Family of Mappings with a Nonlinear Quasi-Contractive Type Condition in Metrically Convex Spaces
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作者 Yongjie Piao 《Analysis in Theory and Applications》 CSCD 2015年第2期167-175,共9页
A class Ф of 5-dimensional functions was introduced and an existence and uniqueness of common fixed points for a family of non-self mappings satisfying a Фi- quasi-contractive condition and a certain boundary condit... A class Ф of 5-dimensional functions was introduced and an existence and uniqueness of common fixed points for a family of non-self mappings satisfying a Фi- quasi-contractive condition and a certain boundary condition was given on complete metrically convex metric spaces, and from which, more general unique common fixed point theorems were obtained. Our main results generalize and improve many same type common fixed point theorems in references. 展开更多
关键词 Metrically convex space a class Ф of 5-dimensional functions Фi-quasi-contraction common fixed point complete.
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潘家窑井田三维地震资料二次解释及应用 被引量:1
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作者 李金松 《煤炭与化工》 CAS 2023年第4期52-55,共4页
本文基于潘家窑矿三维地震成果资料,充分利用和挖掘三维偏移数据体有益信息,开展二次解释研究,除采用常规的地震属性、相干、切片等技术外,重点利用三维空间建模技术,分析5号煤层在三维空间内的分布特征,更精确地判定区内断层及陷落柱... 本文基于潘家窑矿三维地震成果资料,充分利用和挖掘三维偏移数据体有益信息,开展二次解释研究,除采用常规的地震属性、相干、切片等技术外,重点利用三维空间建模技术,分析5号煤层在三维空间内的分布特征,更精确地判定区内断层及陷落柱分布规律,确保地质资料的可靠性,为矿井后续建设生产提供技术保障。 展开更多
关键词 三维地震成果资料二次解释 三维空间建模技术 5号煤层三维空间分布
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R^n上的向量外积 被引量:1
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作者 周小建 林道荣 陈燕华 《南通大学学报(自然科学版)》 CAS 2006年第4期16-18,43,共4页
文章对向量外积进行了研究,得到了Rn上向量外积的形式以及一系列相关的性质.最后,作为应用将托勒密定理推广到n维空间.
关键词 维欧氏空间 向量外积 托勒密定理
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4维欧氏空间E^4的极小直纹面 被引量:1
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作者 杨标桂 欧阳崇珍 《南昌大学学报(理科版)》 CAS 北大核心 2007年第5期414-416,424,共4页
研究4维欧氏空间E4中的极小直纹面。利用活动标架法,证明了E4中的极小直纹面都在E3中,从而也只有正螺面和平面。
关键词 4维欧氏空间 直纹面 极小曲面 正交标架
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多元函数的对称性研究 被引量:3
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作者 冯爱萍 《西安科技大学学报》 CAS 北大核心 2007年第3期527-530,共4页
在n维欧氏空间内,给出了多元函数分别关于点、n-1维超平面对称的充要条件。
关键词 N维欧氏空间 多元函数 对称性 n-1维超平面
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单形的Nagel点与Spieker超球面 被引量:2
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作者 曾建国 熊曾润 《德州学院学报》 2010年第2期13-16,21,共5页
在n维欧氏空间En中,建立了n维单形的奈格尔(Nagel)点与斯俾克(Spieker)超球面概念,并据此导出了一串有关的平行线、共线点、共点线、共球点及多面切球等定理.
关键词 N维欧氏空间 N维单形 n-1维超球面 Nagel点 Spieker超球面
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2-度量空间上φ_j-拟收缩型映射族的公共不动点的唯一性 被引量:3
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作者 朴勇杰 《数学物理学报(A辑)》 CSCD 北大核心 2012年第6期1079-1085,共7页
引进了5元函数类Φ,构造了满足一种φ_j-拟收缩型条件的2-度量空间(X,d)上的自映射族{T_(i,j)}_i∈N∪{0},j∈N决定的收敛序列,然后证明了当X是完备且满足条件T_(a,μ)·T_(β,v)=T_(β,v)·T(a,μ),(?)α,β∈N∪{0},μ,v∈N... 引进了5元函数类Φ,构造了满足一种φ_j-拟收缩型条件的2-度量空间(X,d)上的自映射族{T_(i,j)}_i∈N∪{0},j∈N决定的收敛序列,然后证明了当X是完备且满足条件T_(a,μ)·T_(β,v)=T_(β,v)·T(a,μ),(?)α,β∈N∪{0},μ,v∈N且μ≠v时,该序列的极限就是该映射族{T_(i,j)}_i∈N∪{0},j∈N的唯一的公共不动点.该文的定理推广和改进了很多2-度量空间上的唯一公共不动点定理. 展开更多
关键词 2-度量空间 柯西序列 5元函数类Φ φ_j-拟收缩条件 公共不动点
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关于高维蝴蝶定理 被引量:1
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作者 朱杏华 肖建中 《大学数学》 2004年第2期60-63,共4页
利用距离几何方法将古典的蝴蝶定理推广到n维欧氏空间一般二次超曲面情形,同时也得到高维蝴蝶定理的逆定理.
关键词 蝴蝶定理 N维欧氏空间 二次超曲面 单形
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欧氏空间中等角基的性质 被引量:1
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作者 邓培民 江远航 《大学数学》 2010年第1期137-142,共6页
等角基是正交基的推广,等角基具有和正交基相似的性质,因此研究等角基的性质能够为研究欧氏空间提供一种工具,加深对欧氏空间的了解.本文主要把n维欧氏空间中正交基的一些性质推广到等角基上,得到了五个关于等角基性质的定理.
关键词 N维欧氏空间 等角基 正交基 内积 过渡矩阵 正交变换
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共球有限点集的普鲁海超球面及其性质 被引量:3
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作者 熊曾润 《鲁东大学学报(自然科学版)》 2010年第3期193-197,共5页
应用向量方法,定义了n维共球有限点集的普鲁海超球面概念,并据此导出了一串有关的共线点、共点线及共球点等定理.
关键词 N维欧氏空间 n维共球有限点集 n-1维超球面 欧拉球心 普鲁海超球面
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n维共球有限点集的垂心及其性质 被引量:2
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作者 熊曾润 《鲁东大学学报(自然科学版)》 2012年第3期193-197,共5页
应用向量方法,定义了一般n维共球有限点集的垂心概念,并揭示了它的一系列优美性质.
关键词 N维欧氏空间 n维共球有限点集 n-1维超球面 垂心
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