Search Results - "LIU HECHAO" :: K.UTB vyhledávací portál | TBU Library Retrieval Portal

Proof of an open problem on the Sombor index

Proof of an open problem on the Sombor index

by Liu, Hechao
Published in Journal of applied mathematics & computing (01.06.2023)

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Journal Article

Comparison between Merrifield-Simmons index and some vertex-degree-based topological indices

Comparison between Merrifield-Simmons index and some vertex-degree-based topological indices

by Liu, Hechao
Published in Computational & applied mathematics (01.03.2023)

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Journal Article

Extremal problems on Sombor indices of unicyclic graphs with a given diameter

Extremal problems on Sombor indices of unicyclic graphs with a given diameter

by Liu, Hechao
Published in Computational & applied mathematics (01.06.2022)

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Journal Article

Multiplicative Sombor Index of Graphs

Multiplicative Sombor Index of Graphs

by Hechao Liu
Published in Discrete mathematics letters (28.03.2022)

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Journal Article

Sombor index: review of extremal results and bounds

Sombor index: review of extremal results and bounds

by Liu, Hechao, Gutman, Ivan, You, Lihua, Huang, Yufei
Published in Journal of mathematical chemistry (2022)

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Journal Article

Sharp bounds on the symmetric division deg index of graphs and line graphs

Sharp bounds on the symmetric division deg index of graphs and line graphs

by Liu, Hechao, Huang, Yufei
Published in Computational & applied mathematics (01.09.2023)

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Journal Article

On sufficient conditions for Hamiltonicity of graphs, and beyond

On sufficient conditions for Hamiltonicity of graphs, and beyond

by Liu, Hechao, You, Lihua, Huang, Yufei, Du, Zenan
Published in Journal of combinatorial optimization (01.03.2024)

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Journal Article

Sharp upper bound on the Sombor index of bipartite graphs with a given diameter

Sharp upper bound on the Sombor index of bipartite graphs with a given diameter

by Wang, Zhen, Gao, Fang, Zhao, Duoduo, Liu, Hechao
Published in Journal of applied mathematics & computing (01.02.2024)

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Journal Article

Extremal phenylene chains with respect to detour indices

Extremal phenylene chains with respect to detour indices

by Liu, Hechao, Fang, Xiaona
Published in Journal of applied mathematics & computing (2021)

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Journal Article

On the first three minimum Mostar indices of tree-like phenylenes

On the first three minimum Mostar indices of tree-like phenylenes

by Liu, Hechao, You, Lihua, Chen, Hanlin, Tang, Zikai
Published in Journal of applied mathematics & computing (01.12.2022)

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Journal Article

Bounds of modified Sombor index, spectral radius and energy

Bounds of modified Sombor index, spectral radius and energy

by Huang, Yufei, Liu, Hechao
Published in AIMS mathematics (01.01.2021)

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Journal Article

The minimum Sombor index of trees with given number of pendant vertices

The minimum Sombor index of trees with given number of pendant vertices

by Maitreyi, Venkatesan, Elumalai, Suresh, Balachandran, Selvaraj, Liu, Hechao
Published in Computational & applied mathematics (01.12.2023)

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Journal Article

The Design of Large Curved Waveguide Based on Sunflower Graded Photonic Crystal

The Design of Large Curved Waveguide Based on Sunflower Graded Photonic Crystal

by Liu, Wei, Liu, Hechao, Sun, Xiaohong, Zhang, Fan
Published in Photonics (01.07.2023)

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Journal Article

Study on the Performance of Sunflower Quasi-Periodic Photonic Crystal Superlens

Study on the Performance of Sunflower Quasi-Periodic Photonic Crystal Superlens

by Liu, Wei, Liu, Hechao, Chen, Lixia, Zhang, Fan
Published in Crystals (Basel) (01.08.2022)

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Journal Article

The hyper-Zagreb index of cacti with perfect matchings

The hyper-Zagreb index of cacti with perfect matchings

by Liu, Hechao, Tang, Zikai
Published in AKCE international journal of graphs and combinatorics (02.01.2020)

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Journal Article

Natural killer cells in obstetric antiphospholipid syndrome

Natural killer cells in obstetric antiphospholipid syndrome

by Huo, Rongxiu, Guo, Qianyu, Hu, Junping, Li, Na, Liu, Hechao, Zhang, Zhaoliang, Mi, Liangyu, Peng, Xinyue, Zhang, Liyun, Xu, Ke
Published in Chinese medical journal (05.04.2022)

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Journal Article

Maximal hyper-Zagreb index of trees, unicyclic and bicyclic graphs with a given order and matching number

Maximal hyper-Zagreb index of trees, unicyclic and bicyclic graphs with a given order and matching number

by Hechao Liu, Zikai Tang
Published in Discrete mathematics letters (01.01.2020)

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Journal Article

The Sombor index and coindex of two-trees

The Sombor index and coindex of two-trees

by Du, Zenan, You, Lihua, Liu, Hechao, Huang, Yufei
Published in AIMS mathematics (01.01.2023)

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Journal Article

Extremal trees for the exponential reduced second Zagreb index

Extremal trees for the exponential reduced second Zagreb index

by Liu, Hechao, Chen, Hanlin, Liu, Jia-Bao, Tang, Zikai
Published in Contributions to mathematics (01.04.2021)

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Journal Article

On the minimum edge–Szeged index of fully–loaded unicyclic graphs

On the minimum edge–Szeged index of fully–loaded unicyclic graphs

by Hechao Liu, Zhengping Qiu, Wenhao Hong, Zikai Tang
Published in Discrete mathematics letters (01.01.2020)

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Journal Article

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