On this page you will find a list of seminars (mostly combinatorics, some discrete geometry) arranged by days and times, which frequently change so please double-check the seminar websites for the most recent schedules.
Many of these seminars have gone back to in-person. The recorded talks when they were virtual are still available at the links. Think of this page as a record of the seminars during the pandemic years, as well as new ones in subsequent years.
A very large list of math seminars is available at www.mathseminars.org and CS Theory talks are available here.
Additionally, take a look at this amazing Round the World Relay in Combinatorics.
All times below are Eastern Standard Time (ET). If you are planning a new seminar, you may find this list useful to avoid clashing with existing seminars.
MONDAY
9:00 am ET: University of Delaware Discrete Math/Algebra Seminar, Hybrid
10:00 am ET: Extremal and probabilistic combinatorics webinar, YouTube Channel
11:00 am ET: Women in Network Science, YouTube Channel, Virtual
11:30 am ET: Algebraic Graph Theory Seminar at University of Waterloo, YouTube Channel
TUESDAY
10:00 am ET: Warwick DIMAP seminar (Slides available)
2:00 pm ET: Oxford Discrete Mathematics and Probability Seminar, YouTube Channel
3:00 pm ET: Auburn Discrete Math Seminar
3:30 pm ET: Georgia Tech Graph Theory Seminar, YouTube Channel, In-person
3:30 pm ET: SFU Discrete Math Seminar (12:30 pm UTC-8) YouTube Channel, Hybrid
6:00 pm ET: NYC Geometry Seminar, YouTube Channel, Hybrid
WEDNESDAY
10:15 am ET: Jagiellonian TCS seminar, Hybrid
1:00 pm ET: Graduate Online Combinatorics Colloquium, YouTube Channel, Virtual
1:00 pm ET: VCU Discrete Mathematics Seminar, Hybrid
2:30 pm ET: Atlantic Graph Theory Seminar, Hybrid
3:00 pm ET: Matroid Union Talks , YouTube Channel, Virtual
4:00 pm ET: Combinatorics and Geometry Learning Seminar, YouTube Channel, Hybrid
7:00 pm ET: Washington Combinatorics and Geometry Seminar
THURSDAY
2:30am ET: IBS Virtual Discrete Math Colloquium, YouTube Channel, Virtual
8:15 am ET: Graz Combinatorics Seminar
10:00 am ET: Virtual Seminar on Algebraic Matroids and Rigidity (Ended, but videos are available)
10:15 or 11:15 am ET: Copenhangen-Jerusalem Combinatorics Seminar, YouTube Channel
3:00 pm ET: Princeton Discrete Math Seminar
3:00 pm ET: New York Number Theory Seminar
3:00 pm ET: Cornell ACO Seminar
4:00 pm ET: Talk Math With Your Friends, YouTube Channel (combinatorics and general math talks for a broad audience)
5:00 pm ET: Rutgers Experimental Math Seminar, Vimeo Channel
FRIDAY
8:00 am ET: Bordeaux Graph Theory Seminar,
10:00 am ET: Budapest Big Seminar, Video Archive, Hybrid
11:00 am ET: 05C50 Online, Recordings are listed next to the talks, Virtual
12:00 pm ET: New York Combinatorics Seminar, YouTube Channel, Hybrid
3:15 pm ET: Georgia Tech Combinatorics Seminar, YouTube Channel, In-person
SATURDAY
9:30 am ET: ADMA Colloquium Lecture Series, Virtual
ADMA stands for "Academy of Discrete Mathematics and its Applications.
Seminars with videos, not currently running
Graph-Searching Online Seminar
Recordings are listed next to the talks.
If your seminar is not here, let me know and I'll list it.