- Class meeting time:
- Lecture: Mon, Wed 4:30-5:45 p.m. Room: KCB 106. Zoom Link: https://bostonu.zoom.us/j/98636843427. Passcode: 480237
- Discussion:
- A2: Tue 9:30-10:20 a.m. Room: CAS B06B
- A3: Tue 11:15-12:05 a.m. Room: KCB 106
- Zoom Link (for both sections): https://bostonu.zoom.us/j/95075410130. Passcode: 560946

- Instructor: Prof. Leonid Levin.
- Email: lnd [at] bu [dot] edu

- OH: by email, any time Mon-Wed-Thu 8 a.m. - 8 p.m.

- Email: lnd [at] bu [dot] edu
- Teaching Fellow: Ngu (Nathan) Dang.
- Email: ndang [at] bu [dot] edu

- OH: via Zoom (Passcode: hFamZ8), Tue 6-7 p.m., Thu 10-11 a.m., Fri 5:30-6:30 p.m. https://bostonu.zoom.us/j/5911998238, or by appointment.

- Email: ndang [at] bu [dot] edu

For full details, visit: Course Syllabus.

There are two deadlines for the homework, namely, the first deadline is a week after the date when the HW is assigned, and the second one is the next class after the first one. Both deadlines are strictly at the **beginning** of classes.

There is a homework premium in this class. This means that if you submit your homework on the first deadline, you will receive some extra credits (i.e. the premium). If you turn in your work on the second deadline, you will receive no extra credits but also no penalties. With that being said, there are two cases:

- Case 1: if the first deadine is on Monday and the second one is on Wednesday (the two differ by 2 days), then the premium is 10%.
- Case 2: if it’s the other way around (the two differ by 5 days), then the premium is 20%.

All of these provisions may occasionally change and will be annouced in class.

Unfortunately, any submissions after the second deadline will not recieve any credit.

- Homework 1
- Homework 2
- Homework 3 (solution for selected problems)
- Homework 4
- Homework 5
- Homework 6
- Homework 7
- Homework 8
- Homework 9
- Homework 10

If you plan to attend the discussion in person, then you have to go to the one that you registered. On the contrary, if you plan to attend remotely, then you can hop on to the Discussion Zoom link at any section you prefer.

- Discussion 0
- Discussion 1 (annotated)
- Discussion 2 (annotated)
- Discussion 3 (annotated)
- Discussion 4 (annotated)
- Discussion 5 (annotated)
- Discussion 6 (annotated)
- Discussion 7 (annotated)
- Discussion 8 (annotated)
- Discussion 9 (annotated)

Other useful things, such as lecture notes, practice exams, and exam solutions.

- Midterm Practice (solution)
- Midterm Exam Solution
- Final Practice (solution)
- Final Exam Solution
- Prof. Levin's notes on some topics including solving quadratic residues, rational reconstruction, and Mertens Theorem.