▁She ▁was ▁promoted ▁to ▁a ▁teaching ▁position ▁in ▁ 1 9 3 8 , ▁and ▁became ▁an ▁assistant ▁professor ▁at ▁the ▁University ▁of ▁Lyon ▁in ▁ 1 9 3 9 , ▁while ▁also ▁continu ing ▁to ▁teach ▁at ▁R ennes . ▁In ▁ 1 9 4 3 ▁she ▁became ▁a ▁full ▁professor ▁at ▁the ▁University ▁of ▁Po it iers , ▁the ▁first ▁woman ▁to ▁become ▁a ▁full ▁professor ▁of ▁mathematics ▁in ▁France , ▁and ▁in ▁ 1 9 5 5 ▁she ▁was ▁given ▁a ▁chair ▁there ▁in ▁differential ▁and ▁integral ▁calculus . ▁In ▁ 1 9 5 6 ▁she ▁moved ▁to ▁the ▁University ▁of ▁Paris ▁and ▁after ▁the ▁university ▁split ▁she ▁held ▁a ▁professor ship ▁at ▁Pierre ▁and ▁Marie ▁Cur ie ▁University . ▁ ▁In ▁the ▁ 1 9 5 0 s , ▁motiv ated ▁by ▁the ▁study ▁of ▁aver aging ▁operators ▁for ▁tur bul ence , ▁D ubre il - Jac ot in ' s ▁interests ▁turned ▁towards ▁abstract ▁algebra , ▁and ▁she ▁later ▁performed ▁research ▁in ▁sem igr oups ▁and ▁grad ed ▁algebraic ▁structures . ▁She ▁was ▁the ▁author ▁of ▁two ▁text books , ▁one ▁on ▁lattice ▁theory ▁and ▁the ▁other ▁on ▁abstract ▁algebra . ▁As ▁well ▁as ▁her ▁technical ▁publications , ▁Jac ot in ▁was ▁the ▁author ▁of ▁a ▁work ▁in ▁the ▁history ▁of ▁mathematics , ▁Port ra its ▁of ▁women ▁mathemat icians . ▁ ▁Leg acy ▁R ue ▁Marie - Lou ise - D ubre il - Jac ot in , ▁a ▁street ▁in ▁the ▁ 1 3 th