[1] He stayed at Technische Universität Berlin for his PhD, which he completed in 1970 under the direction of Kurt Leichtweiß, with a dissertation titled Beiträge zur Differentialgeometrie transnormaler Mannigfaltigeiten.
[2] He spent the remainder of his career at Technische Universität Berlin, retiring in 2007.
[1] Wegner became editor-in-chief of Zentralblatt für Mathematik (later zbMATH Open) in 1974, taking over from Ulrich Güntzer.
[3][4] His tenure as editor encompassed the separation of East Germany from zbMath, the reunification of East and West Germany, and the transition of zbMath from a paper resource to a digital resource.
[3][4][5] While editor-in-chief, Wegner also helped to set up procedures for maintenance of the Mathematics Subject Classification.