In 1929, he obtained a Ph.D. in mathematics from the Faculté des Sciences of the University of Paris, with thesis written under the direction of Arnaud Denjoy.
In November 1932 he became assistant professor in the Mathematics Department of the University of Bucharest, working in the Function Theory section chaired by Dimitrie Pompeiu.
They had a son, Grigore (born November 7, 1936), who became a researcher at the Institute of Atomic Physics [ro] in Măgurele.
[3] In March, 2007, the heirs of the Ghika and Angelescu families won back their rights to Hotel Lido [ro], in Bucharest.
[4] Ghika introduced the study of functional analysis in Romania at a time when it was still a new field of mathematics.