Discrete Mathematics

Math 55, Spring 2018, Harvey Mudd College
Prof. Orrison

Catalogue Description

Topics include combinatorics, number theory, and graph theory with an emphasis on creative problem solving and learning to read and write rigorous proofs. Possible applications include probability, analysis of algorithms, and cryptography. Corequisite: Mathematics 40; or permission of instructor.


Michael Orrison ("mylastname"@hmc.edu), SHAN 3412.
Office Hours: Mondays 3:00-5:00 PM and by appointment (just email me a few times that work well for you).


There is no required textbook for this course.


There will be weekly homework (20%), one midterm exam (20%), and a final exam (40%). The final 20% of your grade will be based on class participation and the higher of your midterm and final exam scores.

The grading scale will be roughly the following: A 90%-100%, A- 85%-89%, B+ 80%-84%, B 70%-79%, B- 65%-69%, and so on. Your overall homework score will be the median of your individual homework scores.


You are encouraged to discuss the homework with your classmates, and you should acknowledge their assistance on your homework submissions. Furthermore, you should feel free to use sources well beyond your textbook, personal notes, and your past homework when crafting your solutions. You absolutely must, however, cite any such sources, and you must write up your final solutions on your own.

Academic Accommodations

To request academic accommodations due to a disability, HMC students should contact Deborah Kahn (dkahn@hmc.edu), our Coordinator for Student Disability Resources, as soon as possible. Students from the other Claremont Colleges should contact their home college's disability officer.