MATH 235: Linear Algebra

Course Information


Minsik Han
Email: minsik dot han at rochester dot edu .
Lectures: Mondays and Wednesdays, 12:30-1:45 PM.
Location: Goergen Hall Room 109.
Office hours: Mondays, 4-5:30 PM, and by appointment.
Office: Hylan 908
Bogdan Krstic
Email: bogdan dot krstic at rochester dot edu .
Lectures: Mondays and Wednesdays 2:00-3:15 PM.
Location: Dewey Room 2110D.
Office hours: Mondays and Wednesdays, 11 AM - 12 PM, and by appointment.
Office: Hylan 1019.


Linear Algebra (4th or 5th edition) by Friedberg, Insel and Spence.


Math 165 or the equivalent. This is a strict prerequisite. Math 165 and 235 cannot be taken concurrently. For a background in proofs, Math 200W is recommended but not essential.

Course Description

Finite-dimensional vector spaces over R and C axiomatically and with coordinate calculations. Forms, linear transformations, matrices, eigenspaces, inner products.

Course Meetings

Each section of the course meets for 75 minute lectures twice a week. Attendance is not mandatory, but strongly encouraged.


Weekly homework will be posted on the course page and collected through Gradescope. You are encouraged to work with other students on the homework problems, but you must write up and submit your own solutions. The two lowest homework scores will be dropped. Late homework will only be accepted with prior arrangements and/or due to exceptional circumstances.


There will be two midterm exams and one final exam. The use of calculators, phones or other electronic devices during exams is prohibited. Makeup exams will only be given in exceptional circumstances.

Exam dates and times:
Midterm 1: Tuesday, October 4, 8-9:20 AM ET.
Midterm 2: Tuesday, November 8, 8:00-9:20 AM ET.
Final Exam: Sunday, December 18, 12:30 PM ET.


The final grade will be calculated as the maximum of the following two weighted averages.

Option 1:
Homework: 15%
Midterm 1: 25%
Midterm 2: 25%
Final Exam: 35%
Option 2:
Homework: 15%
Best Midterm Exam: 35%
Final Exam: 50%

Incomplete grades are almost never given. The only justification is a documented serious medical problem or a genuine personal/family emergency. Falling behind in this course or problems with workload on other courses are not acceptable reasons.

Getting Help

In addition to regularly attending class, you are strongly encouraged to come to office hours. No appointment is necessary to come to office hours — just drop in! You are welcome to go to either instructor’s office hours, or the TA’s. We also encourage you to collaborate with your classmates (although all work you turn in must be your own!).

The Learning Center (TLC) has also organized a Math 235 study group for this semester. Rose Wang will be offering a weekly study group meeting on Thursdays from 11 AM to 12:15 PM in Dewey 1-160B. Further details about TLC and the study group can be found here.

Finally, some strategies students at UR found successful include the following:

  • Always go to class and take good notes.
  • Review your notes soon after class — within the next day or so!
  • Read (or at least skim) each section in the text before it is covered in class.
  • Do all of the homework thoroughly, write out all of the details, keep it organized, and use it to help you study.
  • If you don’t understand something, ask right away.
  • Go over tests and look at solutions until you know what you did wrong and understand the solution.
  • Figure things out rather than memorize them.
  • Arrange your schedule so that you have enough time every week to study and do homework.
  • Start studying for exams early.
  • Get plenty of rest the night before an exam.
  • Don’t stress out and don’t give up!

Academic Honesty

All assignments and activities associated with this course must be performed in accordance with the University of Rochester’s Academic Honesty Policy. More information is available at

In particular, exams must be submitted with a signed Honor Pledge.

This course is also subject to the Mathematics Department’s statement on online resources: Any usage whatsoever of online solution sets or paid online resources ( or similar) is considered an academic honesty violation and will be reported to the Board on Academic Honesty. In particular, any assignment found to contain content which originated from such sources is subject to a minimum penalty of zero on the assignment and a full letter grade reduction at the end of the semester (e.g. a B would be reduced to a C). This applies even if the unauthorized content was obtained through indirect means (through a friend for instance) and/or the student is seemingly unaware that the content originated from such sources. If you have any questions about whether resources are acceptable, please check with your instructor.

Disability Support

The University of Rochester respects and welcomes students of all backgrounds and abilities. In the event you encounter any barrier(s) to full participation in this course due to the impact of a disability, please contact the Office of Disability Resources. The access coordinators in the Office of Disability Resources can meet with you to discuss the barriers you are experiencing and explain the eligibility process for establishing academic accommodations. You can reach the Office of Disability Resources at:; (585) 276-5075; Taylor Hall;