Degree sums and dense spanning trees

• Tao Li,

  Roles Resources, Writing – original draft, Writing – review & editing

  Affiliation College of Computer and Control Engineering, Nankai University, Tianjin 300071, P.R. China

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• Yingqi Gao,

  Roles Data curation, Software, Writing – original draft

  Affiliation College of Computer and Control Engineering, Nankai University, Tianjin 300071, P.R. China

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• Qiankun Dong,

  Roles Data curation, Software, Writing – review & editing

  Affiliation College of Computer and Control Engineering, Nankai University, Tianjin 300071, P.R. China

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• Hua Wang

  Roles Writing – original draft, Writing – review & editing

  * E-mail: hwang@georgiasouthern.edu

  Affiliations College of Software, Nankai University, Tianjin 300071, P.R. China, Mathematical Sciences, Georgia Southern University, Statesboro, GA, 30460, United States of America

  http://orcid.org/0000-0002-9070-5383

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