应我院邀请，12月5日至12月9日上午，墨西哥大都会自治大学(Universidad Autonoma Metropolitana)   M.G. Tkachenko 教授在砺志楼114分别作了作了《Bounded subsets of topological groups》,《Bounded sets in paratopological groups》,《C-compact and r-pseudocompact subsets paratopological groups》,《Symmetry number and C-compact subsets of paratopological groups》四场报告。相关老师和研究生聆听了此次报告。

M.G. Tkachenko教授在《Bounded sets in paratopological groups》中着重讲解了Pseudocompactness in product spaces，Bounded subsets of (para)topological groups，Sketch of proofs三个方面；在《C-compact and r-pseudocompact subsets paratopological groups》中从C-compact and r -pseudocompact subsets，Strong r -pseudocompactness，w-admissible paratopological groups，Two open problems这几个方面作了详细讲解；在《Symmetry number and C-compact subsets of paratopological groups》对 Symmetry number and C-compactness，C-compactness in w-narrow groups做了详细的讲解并发表了自己的看法。

报告结束后，M.G. Tkachenko教授与在座的老师和学生进行了探讨和交流。