Complex sentence: Montgomery received her B.A. in 1965 from the University of Michigan and her Ph.D. in Mathematics from the University of Chicago in 1969 under the supervision of I. N. Herstein.
Split into simpler sentences: Montgomery received her B.A. in 1965 from the University of Michigan. In 1969 she was awarded a Ph.D. in Mathematics from the University of Chicago under the supervision of I. N. Herstein.