Together with her father, she worked on the edition of Euclid's Elements and commentaries on the works of Ptolemy - most likely their final form, which has survived to the present day, is her work. She worked on commentaries and editions of Diofantos' 'Arithmetic' and Apollonius of Pergia's 'Cones'. Theon believed that his daughter surpassed him in mathematical knowledge and vision. She is said to have been fascinated by conic sections (ellipse, hyperbola and parabola).