They had two daughters and two sons: Tatyana ('Tanja') (1905–1984), also became a mathematician; Galinka ('Galja') (1910–1979), became an author and illustrator of children's books; Paul, Jr. ('Pavlik') (1915–1939), who also became a physicist; and Vassily ('Wassik') (1918–1933).
De fik to døtre og to sønner: Tatyana ('Tanja') (1905–1984), som også blev matematiker; Galinka ('Galja') (1910–1979), blev børnebogsforfatter/illustrator; Paul Jr. ('Pavlik') (1915–1939), blev fysiker; og Vassily ('Wassik') (1918–1933).