Showing 1,861 - 1,880 results of 2,667 for search '"Topology"', query time: 0.05s Refine Results
  1. 1861

    Type Synthesis and Classification of 1-translational and 2-rotation Parallel Mechanism by Feng Yongping, Luo Yufeng, Shi Zhixin, Xie Dongfu

    Published 2017-01-01
    “…Using topological structure synthesis method Based on the POC set,the type synthesis of 1-translational and 2-rotation parallel mechanism is carried out. …”
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    Article
  2. 1862

    Compatible elements in partly ordered groups by Jirí Mockor, Angeliki Kontolatou

    Published 2005-01-01
    “…It is proved that if G is defined by a family of t-valuations of finite character, then G admits an SQDP if and only if it admits a quasi-divisor property and any finitely generated t-ideal is generated by two elements. A topological density condition in topological group of finitely generated t-ideals and/or compatible elements are proved to be equivalent to SQDP.…”
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  3. 1863

    Some Inequalities between General Randić-Type Graph Invariants by Imran Nadeem, Saba Siddique, Yilun Shang

    Published 2024-01-01
    “…The Randić-type graph invariants are extensively investigated vertex-degree-based topological indices and have gained much prominence in recent years. …”
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    Article
  4. 1864

    Derived categories and the analytic approach to general reciprocity laws. Part I by Michael Berg

    Published 2005-01-01
    “…We reformulate Hecke's open problem of 1923, regarding the Fourier-analytic proof of higher reciprocity laws, as a theorem about morphisms involving stratified topological spaces. We achieve this by placing Kubota's formulations of n-Hilbert reciprocity in a new topological context, suited to the introduction of derived categories of sheaf complexes. …”
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  5. 1865

    Representation and Reasoning of Three-Dimensional Spatial Relationships Based on R5DOS-Intersection Model Representation and Reasoning Based on R5DOS Model by Jian Li, Weijian Zhang, Yating Hu, Zhun Wang

    Published 2020-01-01
    “…This paper aims to disclose the compound topological and directional relationships of three simple regions in the three-dimensional (3D) space. …”
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    Article
  6. 1866

    Computing the Hosoya Polynomial of M-th Level Wheel and Its Subdivision Graph by Peng Xu, Muhammad Numan, Aamra Nawaz, Saad Ihsan Butt, Adnan Aslam, Asfand Fahad

    Published 2021-01-01
    “…Furthermore, we will derive two well-known topological indices for the abovementioned graphs, first Weiner index, and second hyper-Wiener index.…”
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  7. 1867

    Notes on Fréchet spaces by Woo Chorl Hong

    Published 1999-01-01
    “…Second, we give sufficient conditions for the expansion of a topological space by the sequential closure operator to be a Fréchet space and also a sufficient condition for a simple expansion of a topological space to be Fréchet. …”
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  8. 1868

    Persistent Homology Combined with Machine Learning for Social Network Activity Analysis by Zhijian Zhang, Yuqing Sun, Yayun Liu, Lin Jiang, Zhengmi Li

    Published 2024-12-01
    “…Then, based on the persistence entropy, this paper defines the Norm Entropy-NE(X) to represent the complexity of the topological features of the ego network, a larger NE(X) indicates a higher topological complexity, i.e., the higher the activity of the nodes, thus indicating the degree of activity of the nodes. …”
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  9. 1869

    Observing non-Hermiticity induced chirality breaking in a synthetic Hall ladder by Rui Ye, Yanyan He, Guangzhen Li, Luojia Wang, Xiaoxiong Wu, Xin Qiao, Yuanlin Zheng, Liang Jin, Da-Wei Wang, Luqi Yuan, Xianfeng Chen

    Published 2025-01-01
    “…Abstract Non-Hermitian topological photonics plays a key role in bridging topological matter with gain and loss engineering in optics. …”
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    Article
  10. 1870

    Ecological network construction and optimization of typical resource-based regions, and strategies for the enhancement of multiple ecosystem services: Balancing function and struct... by Shaoqing Wang, Yanling Zhao, Qiyuan Wang, He Ren, Shichao Zhu, Jiarui Cao

    Published 2025-01-01
    “…The ecological functions of BESs performed better, but the topological structure and degree of coordination of DESs were better than those of BESs. …”
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    Article
  11. 1871

    A Surgery Issue: Cutting through the Architectural Fabric by Athina Angelopoulou

    Published 2017-12-01
    “…I start by rereading a topological body plan, used by surgeons as a guide for performing incisions. …”
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    Article
  12. 1872

    Some New Variants of Relative Regularity via Regularly Closed Sets by Sehar Shakeel Raina, A. K. Das

    Published 2021-01-01
    “…This notion of relative topological properties was introduced by Arhangel’skii and Ganedi in 1989. …”
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    Article
  13. 1873

    Induced Representation Method in the Theory of Electron Structure and Superconductivity by V. G. Yarzhemsky

    Published 2019-01-01
    “…It is proved that the nodal structure of topological superconductors in the case of multidimensional irreducible representations is defined by additional quantum numbers. …”
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    Article
  14. 1874

    Hopf link invariants and integrable hierarchies by Chuanzhong Li, A. Mironov, A.Yu. Orlov

    Published 2025-01-01
    “…Furthermore, this Hopf generating function in the case of composite representations, which is a generating function of the 4-point functions in topological string (corresponding to the resolved conifold with branes on the four external legs), is a τ-function of the universal character (UC) hierarchy put on the topological locus. …”
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  15. 1875

    Algorithms for Computing Wiener Indices of Acyclic and Unicyclic Graphs by Bo Bi, Muhammad Kamran Jamil, Khawaja Muhammad Fahd, Tian-Le Sun, Imran Ahmad, Lei Ding

    Published 2021-01-01
    “…Let G=VG,EG be a molecular graph, where VG and EG are the sets of vertices (atoms) and edges (bonds). A topological index of a molecular graph is a numerical quantity which helps to predict the chemical/physical properties of the molecules. …”
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  16. 1876

    Lebesgue Measurability of Separately Continuous Functions and Separability by V. V. Mykhaylyuk

    Published 2007-01-01
    “…A connection between the separability and the countable chain condition of spaces with L-property (a topological space X has L-property if for every topological space Y, separately continuous function f:X×Y→ℝ and open set I⊆ℝ, the set f−1(I) is an Fσ-set) is studied. …”
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  17. 1877

    Mechanistic Pathways in Cyanide-Mediated Benzoin Condensation: A Comprehensive Electron Localisation Function (ELF) and Catastrophe Theory Analysis of the Umpolung Reaction by Michal Michalski, Slawomir Berski

    Published 2025-01-01
    “…This research investigates the mechanism of the cyanide-type umpolung reaction in benzoin condensation using topological analysis of ELF and catastrophe theory. …”
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    Article
  18. 1878

    Investigation of Dendrimer Structures by Means of K-Banhatti Invariants by Cheng-Gang Huo, Fozia Azhar, Abaid Ur Rehman Virk, Tariq Ismaeel

    Published 2022-01-01
    “…This study is about some new topological indices of dendrimer generations. Here, we calculate K Banhatti indices for five generations of dendrimers. …”
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    Article
  19. 1879

    Heat Transfer Potentiality and Flow Behavior in a Square Duct Fitted with Double-Inclined Baffles: A Numerical Analysis by Amnart Boonloi, Withada Jedsadaratanachai

    Published 2021-01-01
    “…Numerical analysis of heat transfer mechanisms and flow topologies for the heat exchanger square channel (HESC) installed with the double-inclined baffles (DIB) is reported. …”
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  20. 1880