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預告:王志剛教授談“Singularities of worldsheets associated with?null Cartan curves in Lorentz Minkowski space time”
來源:理學院作者:李彥霖時間:2019-10-30 點擊:7487

時 間:10月31日(周四)10:00-11:00

地 點:倉前校區勤園21號樓306學術報告廳

主講人:王志剛,哈爾濱師范大學數學科學學院,教授,2012年博士畢業于東北師范大學數學與統計學院基礎數學專業。主要研究方向:奇點理論及其應用、隨機微分方程。在《Appl. Math. Model.》、《Phys. Lett. B》、《Proc. Roy. Soc. Edinburgh》、《Topol. Appl.》、《J. Geom. Phys.》、《Hokkaido Math. J. 》、《Int. J. Mod. Phys. A》、《Mediter. J.Math.》、《Math. Methods. Appl. Sci.》等期刊發表SCI檢索論文26篇。

內容簡介:In this talk, as applications of singularity theory, I will talk about the singularities of several worldsheets generated by null Cartan curves in Lorentz–Minkowski space–time. Using the approach of the unfolding theory in singularity theory, we establish the relationships between these worldsheets and invariants such that the cuspidal edge type of singularity and the swallowtail type of singularity can be characterized by these invariants, respec- tively. Meanwhile, the contact of the tangent curve of a null Cartan curve with some model surfaces are discussed in detail. In addition, I will also present the dual relation- ships between the tangent curve of a null Cartan curve and these worldsheets. Finally, I will give some concrete examples to explain our theoretical results.

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    預告:王志剛教授談“Singularities of worldsheets associated with?null Cartan curves in Lorentz Minkowski space time”

    來源:理學院 作者:李彥霖 時間:2019-10-30 點擊:7487