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Date: 17-4-2022
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Date: 13-5-2022
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Date: 22-7-2016
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An -firecracker is a graph obtained by the concatenation of
-stars by linking one leaf from each (Chen et al. 1997, Gallian 2007).
Firecracker graphs are graceful (Chen et al. 1997, Gallian 2018).
Precomputed properties of firecrackers are implemented in the Wolfram Language as GraphData["Firecracker",
n, k
].
Chen, W.-C.; Lu, H.-I; and Yeh, Y.-N. "Operations of Interlaced Trees and Graceful Trees." Southeast Asian Bull. Math. 21, 337-348, 1997.
Gallian, J. "Dynamic Survey of Graph Labeling." Elec. J. Combin. DS6. Dec. 21, 2018. https://www.combinatorics.org/ojs/index.php/eljc/article/view/DS6.
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الصين.. طريقة لمنع تطور قصر النظر لدى تلاميذ المدارس
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ماذا سيحدث خلال كسوف الشمس يوم السبت؟
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قسم الشؤون الدينية يختتم محاضراته الرمضانية في صحن مرقد أبي الفضل العباس (عليه السلام)
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