Results 71 to 80 of about 2,029,122 (144)

Application of graph theory in liver research: A review

Portal Hypertension & Cirrhosis
Graph theory has emerged as a valuable tool in liver research, aiding in the assessment of complex interactions underlying liver diseases at different organizational levels.
Xumei Hu, Longyu Sun, Rencheng Zheng, Xueqin Xia, Meng Liu, Weibo Chen, Xinyu Zhang, Chengyan Wang   +7 more
doaj   +1 more source

Computing Topological Indices for Para-Line Graphs of Anthracene

Open Chemistry, 2019
Atoms displayed as vertices and bonds can be shown by edges on a molecular graph. For such graphs we can find the indices showing their bioactivity as well as their physio-chemical properties such as the molar refraction, molar volume, chromatographic ...
Zhang Zhiqiang, Mufti Zeshan Saleem, Nadeem Muhammad Faisal, Ahmad Zaheer, Siddiqui Muhammad Kamran, Farahani Muhammad Reza   +5 more
doaj   +1 more source

M-polynomial and topological indices of zigzag edge coronoid fused by starphene

Open Chemistry, 2020
Chemical graph theory is a subfield of graph theory that studies the topological indices for chemical graphs that have a good correlation with chemical properties of a chemical molecule.
Afzal Farkhanda, Hussain Sabir, Afzal Deeba, Hameed Saira   +3 more
doaj   +1 more source

Specifying Graph Languages with Type Graphs [PDF]

arXiv, 2017
We investigate three formalisms to specify graph languages, i.e. sets of graphs, based on type graphs. First, we are interested in (pure) type graphs, where the corresponding language consists of all graphs that can be mapped homomorphically to a given type graph.
arxiv  

行星轮系的图论模型及其应用

Jixie chuandong, 2008
Through analysis of the graph theory model,the conditions that the EGTs’ graph theory model must be met is summarized.On the basis of graph theory model presented in literature[1],a concept of module entity and basic loop in graph theory model is ...
史晓影, 陈良钰, 薛隆泉
doaj  

Scaffolding Based on Problems in Graph Theory Learning

International Journal of Trends in Mathematics Education Research, 2019
Scaffolding is assistance provided so students can solve problems or understand concepts that can not be solved independently. When students are considered capable of completing their tasks independently, the assistance is eliminated.
Yunita Oktavia Wulandari, Nia Wahyu Damayanti   +1 more
doaj   +1 more source

Threshold graph limits and random threshold graphs [PDF]

arXiv, 2009
We study the limit theory of large threshold graphs and apply this to a variety of models for random threshold graphs. The results give a nice set of examples for the emerging theory of graph limits.
arxiv  

On the Isomorphism Problem of Cayley Graphs of Graph Products [PDF]

arXiv
We investigate Cayley graphs of graph products by showing that graph products with vertex groups that have isomorphic Cayley graphs yield isomorphic Cayley graphs.
arxiv  

Graph Signal Processing: Modulation, Convolution, and Sampling [PDF]

arXiv, 2019
To analyze data supported by arbitrary graphs G, DSP has been extended to Graph Signal Processing (GSP) by redefining traditional DSP concepts like shift, filtering, and Fourier transform among others. This paper revisits modulation, convolution, and sampling of graph signals as appropriate natural extensions of the corresponding DSP concepts.
arxiv  

On topological indices and entropy measures of beryllonitrene network via logarithmic regression model

Scientific Reports
Chemical graph theory, a subfield of graph theory, is used to investigate chemical substances and their characteristics. Chemical graph analysis sheds light on the connection, symmetry, and reactivity of molecules.
Guofeng Yu, Muhammad Kamran Siddiqui, Mazhar Hussain, Nazir Hussain, Zohaib Saddique, Fikre Bogale Petros   +5 more
doaj   +1 more source