The 4th Combinatorics and Graph Theory Conference (CGT 2019) Conference Date: July 19-21, 2019Conference Venue: Guilin, ChinaWebsite: http://www.confjuly.org/conference/CGT2019/Online Registration System: http://www.confjuly.org/RegistrationSubmission/default.aspx?ConferenceID=1132If you wish to serve the conference as an invited speaker, please send email to us with your CV. We'll contact with you asap. Publication and Presentation Publication: Open access journal related to Applied Mathematics and PhysicsIndex: CNKI and Google Scholar Note: If you want to present your research results but do NOT wish to publish a paper, you may simply submit an Abstract to our Registration System. Contact Us Email: This email address is being protected from spambots. You need JavaScript enabled to view it.: +86 132 6470 2250QQ: 3025797047WeChat: 3025797047 Conference Topics Topics: The conference is soliciting state-of-the-art research papers in the following areas of interest: Enumerative combinatoricsCombinatorial designsAlgebraic combinatoricsCoding theoryCryptographyCombinatorial matrix theoryFinite geometryCombinatorial optimizationCombinatorial algorithmsAlgebraic graph theoryTopological graph theoryStructure graph theoryApplications of combinatorics and graph theory