TGS denotes ''Topological Groups Seminar'', which is a series of seminars organized online by W. Lewis and A. Mader from University of Hawaii (USA). Our members joined as participants and thank Dr. Lewis and Prof. Mader for this important scientific initiative of international character. It is a forum of discussion on topological groups for PhD students, postdocs and experts from South Africa, Italy, USA, Germany, Swiss and India.

UWC denotes ''UWC CaTop Seminars'' which are organized by A. Razafindrakoto and D. Holgate with the local unity of research in topology at University of the Western Cape (Bellville, South Africa). Our members join very often as participants, due to the presence of common interests of research in topology.