Results 1 to 10 of about 1,461 (78)
Enumerating the Number of Spanning Trees of Pyramid Graphs Based on Some Nonahedral Graphs
AxiomsThe enumeration of spanning trees in various graph forms has been made easier by the study of electrically equivalent transformations, which was motivated by Kirchhoff’s work on electrical networks.
Ahmad Asiri, Salama Nagy Daoud
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Complexity trees of the sequence of some nonahedral graphs generated by triangle
Heliyon, 2020 Calculating the number of spanning trees of a graph is one of the widely studied graph problems since the Pioneer Gustav Kirchhoff (1847). In this work, using knowledge of difference equations we drive the explicit formulas for the number of spanning ...
S.N. Daoud, Wedad Saleh
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Carroll contractions of Lorentz-invariant theories
Journal of High Energy Physics, 2021 We consider Carroll-invariant limits of Lorentz-invariant field theories. We show that just as in the case of electromagnetism, there are two inequivalent limits, one “electric” and the other “magnetic”.
Marc Henneaux +1 more
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Enumeration of spanning trees in the sequence of Dürer graphs
Open Mathematics, 2017 In this paper, we calculate the number of spanning trees in the sequence of Dürer graphs with a special feature that it has two alternate states. Using the electrically equivalent transformations, we obtain the weights of corresponding equivalent graphs ...
Li Shixing
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Number of Spanning Trees in the Sequence of Some Graphs
Complexity, 2019 In mathematics, one always tries to get new structures from given ones. This also applies to the realm of graphs, where one can generate many new graphs from a given set of graphs.
Jia-Bao Liu, S. N. Daoud
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MathematicsUsing equivalent transformations, complicated circuits in physics that need numerous mathematical operations to analyze can be broken down into simpler equivalent circuits.
Ahmad Asiri, Salama Nagy Daoud
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On the Number of Spanning Trees in Augmented Triangular Prism Graphs
MathematicsIn computer science and graph theory, prism and antiprism graphs are crucial for network modeling, optimization, and network connectivity comprehension.
Ahmad Asiri, Salama Nagy Daoud
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The Complexity of Classes of Pyramid Graphs Based on the Fritsch Graph and Its Related Graphs
AxiomsA quantitative study of the complicated three-dimensional structures of artificial atoms in the field of intense matter physics requires a collaborative method that combines a statistical analysis of unusual graph features related to atom topology ...
Ahmad Asiri, Salama Nagy Daoud
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Monopoles, Dirac strings and generalised symmetries
Journal of High Energy PhysicsDirac’s formulation of magnetic monopoles is shown to be equivalent to Maxwell theory coupled to 2-form gauge fields so that it has a local 1-form symmetry, with the 2-form gauge fields given in terms of the 2-form current densities associated with the ...
C. M. Hull
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Current-induced creation and dynamics of embedded magnetic skyrmion bags. [PDF]
Nat CommunWu Y +7 more
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