Numbers and general functions represented by letters in mathematics, such as x, y, z, b, F(t), etc. Letters representing points, lines, faces and figures are also italicized. For example: point P, △ABC, etc.

Graduation research requires students to write papers before graduation, so as to concentrate on scientific research and training of students in this major. Graduation thesis is usually arranged in the last academic year (semester). The topic of the thesis is designated by the teacher or proposed by the students. After choosing a topic, students conduct research, write and submit papers. The purpose is to cultivate students' scientific research ability, strengthen the training of solving practical problems by comprehensively applying the knowledge, theory and skills they have learned, and generally examine the academic level achieved by students in universities.