On r-cross t-intersecting families for vector spaces

Speaker: Benjian Lv（Beijing Normal University）

Time: Nov 5, 2026, 10:00-11:00

Location: M1001, College of Science Building，Tencent Meeting ID: 112 151 550

Eigenvalue Multiplicities and Eigenvalue Distributions of Graphs

Speaker: Zhibin Du（South China Normal University）

Time: Oct 29, 2026, 10:00-11:00

Location: M1001, College of Science Building，Tencent Meeting ID: 589 762 461

Nonregular graphs with a given maximum degree attaining the maximum spectral radius

Speaker: Zejun Huang（Shenzhen University）

Time: Oct 22, 2026, 10:00-11:00

Location: M1001, College of Science Building，Tencent Meeting ID: 480 463 529

Hardness and Algorithms for Packing Steiner Trees in Digraphs

Speaker: Yuefang Sun(Ningbo University)

Time: Oct 15, 2026, 10:00-11:00

Location: M1001, College of Science Building，Tencent Meeting ID: 267 575 018

Coxeter Condorcet domains

Speaker: Yibo Gao（Peking University）

Time: Oct 8, 2026, 10:00-11:00

Location: M1001, College of Science Building，Tencent Meeting ID: 876 147 079

On Erdos-Ginzburg-Ziv problem

Speaker: Hanbin Zhang (Sun Yat-sen University)

Time: Sep 24, 2026, 10:00-11:00

Location: M1001, College of Science Building，Tencent Meeting ID: 545 644 030

Testing Boolean predicates

Speaker: Yuval Filmus（Technion - Israel Institute of Technology）

Time: Sep 17, 2026, 10:00-11:00

Location: M1001, College of Science Building，Tencent Meeting ID: 864 241 067

Large nontrivial intersecting families in Gr(k, mathbb{F}_q^{2k})

Speaker: Elizaveta Iarovikova（Moscow Institute of Physics and Technology）

Time: Sep 10, 2026, 10:00-11:00

Location: M1001, College of Science Building，Tencent Meeting ID: 175 945 501

A Square-freeness Condition for Graphs Determined by Their Generalized Spectra

Speaker: Wei Wang（Xi’an Jiaotong University）

Time: Jun 11, 2026, 10:00-11:00

Location: M1001, College of Science Building

Card Shuffling with Adjacent Swaps and Fill's Gap Problem

Speaker: Gary R. W. Greaves(Nanyang Technological University)

Time: Apr 23, 2026, 10:00-11:00

Location: M1001, College of Science Building，Tencent Meeting ID: 637 218 483

Partial Difference Sets: Broadening the Scope of the Denniston Family

Speaker: Shuxing Li（University of Delaware）

Time: Mar 24, 2026, 11:00-12:00

Location: M1001, College of Science Building，Tencent Meeting ID: 689 341 002

Counting sum-free sets

Speaker: Hong Liu（Institute for Basic Science, Daejeon, Korea）

Time: Mar 24, 2026, 10:00-11:00

Location: M1001, College of Science Building，Tencent Meeting ID: 689 341 002

Halpern-Läuchli Theorem and Reverse Mathematics

Speaker: Yue Yang （National University of Singapore）

Time: Dec 11, 2025, 10:00-11:00

Location: M1001, College of Science Building

Some extremal problems on (non-) color critical graphs

Speaker: Shuchao Li（Central China Normal University）

Time: Dec 4, 2025, 10:00-11:00

Location: M1001, College of Science Building，Tencent Meeting ID: 654 651 904

On the complete classification of triply-transitive strongly regular graphs

Speaker: Weicong Li（Great Bay University）

Time: Nov 27, 2025, 10:00-11:00

Location: M4009, College of Science Building，Tencent Meeting ID: 111 643 003