Discrete trace theorems and energy minimizing spring embeddings of planar graphs
Discrete trace theorems and energy minimizing spring embeddings of planar graphs
复制标题
平面图的离散迹定理和能量最小化弹簧嵌入
DOI:
10.1016/j.laa.2020.08.035
复制
发表时间:
2021
影响因子:
1.1
通讯作者:
Zikatanov, Ludmil T.
中科院分区:
文献类型:
--
作者:
Urschel, John C.;Zikatanov, Ludmil T.
Tutte's spring embedding theorem states that, for a three-connected planar graph, if the outer face of the graph is fixed as the complement of some convex region in the plane, and all other vertices are placed at the mass center of their neighbors, then this results in a unique embedding, and this embedding is planar. It also follows fairly quickly that this embedding minimizes the sum of squared edge lengths, conditional on the embedding of the outer face. However, it is not at all clear how to embed this outer face. We consider the minimization problem of embedding this outer face, up to some normalization, so that the sum of squared edge lengths is minimized. In this work, we show the connection between this optimization problem and the Schur complement of the graph Laplacian with respect to the interior vertices. We prove a number of discrete trace theorems, and, using these new results, show the spectral equivalence of this Schur complement with the boundary Laplacian to the one-half power for a large class of graphs. Using this result, we give theoretical guarantees for this optimization problem, which motivates an algorithm to embed the outer face of a spring embedding.
登录
查看更多内容
DOI:
10.1515/rnam.1991.6.3.223
发表时间:
1991
期刊:
--
影响因子:
--
作者:
S. V. Nepomnyaschikh
通讯作者:
S. V. Nepomnyaschikh
DOI:
10.1007/3-540-45071-8_50
发表时间:
2003-07
期刊:
--
影响因子:
--
作者:
Y. Koren
通讯作者:
Y. Koren
DOI:
10.1007/978-3-319-97136-0_3
发表时间:
2018
期刊:
Lecture notes in computer science
影响因子:
--
作者:
Wu, Yangqingxiang;Zikatanov, Ludmil T
通讯作者:
Zikatanov, Ludmil T
DOI:
10.1002/9781119140542.app2
发表时间:
2018
期刊:
Finite-Time Stability
影响因子:
--
作者:
J. W. Nunn;J. Chipman
通讯作者:
J. Chipman
影响因子:
2.9
作者:
Koren, Y
通讯作者:
Koren, Y