Math
104A (Number Theory)  Winter 2021
Professor: CRISTIAN
D.
POPESCU
 Lectures: TTh 9:3010:50am, online.
Office Hours: TTh 12:001:00, online.
Office: AP&M
6256;
Phone: 8585346297; Email: cpopescu@math.ucsd.edu
Teaching Assistants: ZACH HIGGINS 
Discussion
Sections: W 5:005:50pm, online.
Office Hours: TBA, online.
Email: zhiggins@ucsd.edu
COURSE DESCRIPTION
WHAT IS MATH 104A?
This is the first course in algebraic number theory for undergraduate
students with background in abstract algebra.
We will cover most of the material in Chapters 1  10 of the
textbook.
TEXT Kenneth Ireland and Michael Rosen, A Classical Introduction to Number Theory, Second Edition, Springer 1990.
EXAMS
 Midterm 1  Tuesday, February 2, 9:30am.
Topics: Chapters 1, 2.
 Midterm 2  Tuesday, March 2, 9:30am. Topics: TBA
 Final Exam  Tuesday, March 16, 8am11am. Topics: TBA.

No notes, textbooks, calculators
are allowed during exams. No makeup exams will be given and no late
homework will be accepted. Cheating on an exam results in 0 points for
that exam, as well as
further disciplinary action. Please
read very carefully the following ACADEMIC
INTEGRITY GUIDELINES.
GRADING POLICY
 Midterms: 20% each; Final Exam: 40%;
Homework: 20%. The grading will be done on a curve, the median
corresponding to a B/C+.
CLASSROOM CONDUCT EXPECTATIONS
 Lecture attendance is mandatory.
 Electronic
devices: The use of electronic devices (such as cell phones, laptops,
tablets, iPods) for nonclassrelated matters while in class/section is not allowed.
No visual or audio recording is allowed in class/section without prior
permission of the instructor (whether by camera, cell phone, or other
means).
 Conversations: Please avoid having private conversations with your classmates during lecture and office hours.
 Email
etiquette: I will not discuss mathematics (e.g. solutions or hints of
solutions to HW problems) via email. Office hours and lectures are the
best venue for that purpose. However, if you have any type of
administrative questions regarding this class, please do not hesitate
to send me short and to the point email messages.
GETTING HELP
Help with mathematical problems:
 Section: Ask
questions in section  this is one of the main reasons why sections
exist.
 Office Hours: You
are strongly advised to take full advantage of your professor's and
ta's office
hours.
 Classmates: Sometimes
a classmate can help. Sometimes you can learn by working out problems
together with your classmates.
Help with personal problems which
affect your class work:
 Talk to the professor or, if appropriate, your
college provost.