Date | Speaker | Title [Click here for abstracts] |
---|---|---|

Aug. 30 | Shuddhodan Vasudevan (IHES) | The perverse filtration via Brylinski-Radon transform |

Sep. 8Note: Fri. 4-5, Wrighton 250 |
Dong Quan Nguyen (GWU) | Skolem's conjecture and Higher reciprocity law for the polynomial ring over ultra-finite fields, using model theory |

Sep. 13 | Matt Kerr (WUSTL) | Differential equations, hypergeometric families, and Beilinson's conjectures |

Sep. 20Note: Room 199 |
Ravindra Girivaru (UMSL) | Franchetta's conjecture for higher rank vector bundles |

Sep. 27 | Wanlin Li (WUSTL) | Basic reductions of abelian varieties |

Oct. 18Note: Room 199 |
Eric Jovinelly (UIC) | Geometric Manin's Conjecture for Fano threefolds |

Oct. 25 | Roya Beheshti (WUSTL) | Tevelev degrees of Fano varieties |

Oct. 30Note: Mon. 2-3, Sever 102 |
Colleen Robles (Duke) | Completions of 2-parameter period maps by nilpotent orbits |

Nov. 3 | Robert Lazarsfeld (Stony Brook) | How irrational is an irrational variety? |

Nov. 4-5 | Western AG Symposium | See event webpage |

Nov. 8 Nov. 9 |
Daniel Litt (Toronto) | Prill and Prym problems Shell games with 2x2 matrices |

Nov. 17Note: Fri. 4-5,Rm. 215 |
Sun Woo Park (UW-Madison) | On the prime Selmer ranks of cyclic prime twist families of elliptic curves over global function fields |

Nov. 29 | Carl Lian (Tufts) | Counting curves on P^{r} |

Dec. 1Note: Fri. 2-3,Crow 206 |
Tokio Sasaki (Miami) | Indecomposable cycles on cubic fourfolds containing a plane |

Dec. 5Note: Tue. 4-5, Rm. 115 |
Alex Betts (Harvard) | Unexpected points in quadratic Chabauty loci |

Dec. 13Note: Rm. 115 |
John Yin (Wisconsin) | A Chebotarev Density Theorem over Local Fields |

Jan. 17 |
Jordan Ellenberg (Wisconsin) | TBA |

Jan. 24 |
Paul Hacking (U Mass) | TBA |

Jan. 25 | Alessio Corti (Imperial) | TBA |

Feb. 15 | Daniel Erman (Hawaii) | TBA |

Feb. 21 |
Andrew Harder (Lehigh) | TBA |

Feb. 29 | John Voight (Dartmouth) | TBA |

Mar. 6 |
Lena Ji (U Michigan) | TBA |

Mar. 13 |
SPRING BREAK | No seminar |

Mar. 20 |
Wendelin Lutz (U Mass) | TBA |

Date | Speaker | Title [Click here for abstracts] |
---|---|---|

Feb. 1 | Roya Beheshti (WUSTL) | Restrictions on rational surfaces in general Fano hypersurfaces |

Feb. 8 | Andrew Harder (Lehigh) | Motivic geometry of 2-loop Feynman integrals |

Feb. 21Note: Tuesday, Room 115 |
David Urbanik (MSRI/IHES) | Geometric G-functions and atypicality |

Mar. 8 | Nathan Chen (Columbia) | Finite order birational automorphisms of Fano hypersurfaces |

Apr. 5 |
RJ Acuna (WUSTL) | K-theoretic criteria for exactness of some families of Laurent polynomials |

Apr. 14Note: Friday, 3-4, Room 215 |
Alan Thompson (Loughborough) | Type II degenerations of K3 surfaces, pseudolattices, and mirror symmetry |

Apr. 19 | Izzet Coskun (UIC) | The stability of normal bundles of curves |

Apr. 26 |
Devin Akman (WUSTL) | Factors of A-polynomials are rare |

May. 3 |
Michael Kemeny (Wisconsin) | The rank of syzygies |

Date | Speaker | Title [Click here for abstracts] |
---|---|---|

Aug. 31 | Wanlin Li (WUSTL) | Abelian varieties of prescribed order over finite fields |

Sep. 9Note: Friday, 3-4pm |
Aaron Landesman (Harvard) | The algebraic geometry of the Putman-Wieland conjecture |

Sept. 14 | Ben Wormleighton (WUSTL) | Reconciling mutations for Fano and cluster varieties |

Sept. 28 | Brian Lawrence (Wisconsin) | Sparsity of integral points on moduli spaces of varieties |

Oct. 5 | Wendelin Lutz (U Mass) | A geometric proof of the classification of T-polygons |

Oct. 12Note: 3-4pm |
Jay Yang (WUSTL) | Virtual resolutions and the virtually Cohen--Macaulay property |

Oct. 21Note: Friday, Zoom, 4-5pm |
Lara Bossinger (UNAM) | Tropical totally positive cluster varieties |

Oct. 26 | Ziquan Yang (Wisconsin) | The Tate Conjecture over finite fields for varieties with h^{2,0}=1 |

Nov. 2 | Matt Kerr (WUSTL) | K_{2} and quantum curves |

Nov. 16 | Salim Tayou (Harvard) | Exceptional jumps of the Picard rank of K3 surfaces over number fields |

Dec. 2Note: Friday, 1-2pm |
Jonathan Love (McGill) | TBA |

Date | Speaker | Title [Click here for abstracts] | Location |
---|---|---|---|

Jan. 26 | Joseph Cummings | Newton-Okounkov bodies of arrangement varieties | Zoom |

Feb. 2 | Mandy Cheung | Family Floer mirror and mirror symmetry for rank 2 cluster varieties | Zoom |

Feb. 9 | Franco Rota | Full exceptional collections for anticanonical log del Pezzo surfaces | Zoom |

Feb. 16 | Adam Afandi | Polynomiality of hyperelliptic Hodge integrals | Zoom |

Feb. 23 | Michael Wemyss | Local normal forms of noncommutative functions | Zoom |

Mar. 2 | Alex Küronya | Newton-Okounkov bodies and measures of local positivity | Zoom |

Mar. 9 | Maria Gillespie | Multiplicity-free formulas for products of psi and omega classes on M_0,n-bar via degenerations | Zoom |

Mar. 23 | Soumya Sinha Babu | Quantum curves and asymptotic Hodge theory | Room 199 |

Mar. 24 |
Chuck Doran | Mirroring towers: fibration and degeneration in Calabi-Yau geometry | Colloquium |

Mar. 30 |
Radu Laza | Deformations of singular Fano and Calabi-Yau varieties | Crow 206 |

Apr. 6 |
Marcos Marino | Spectral theory, quantum curves, and topological strings | Zoom |

Apr. 13 3-4pm |
Bruno Klingler | Recent progress on Hodge loci | Zoom |

Apr. 21 Thurs |
Genival da Silva Jr. | The complexity of higher Chow groups | Crow 206 |

Apr. 27 |
Laure Flapan | Kodaira dimension of some moduli spaces of hyperkähler varieties | Crow 206 |

May. 19 9:30am |
Vasudevan Srinivas | Algebraic versus topological entropy for varieties over finite fields | Crow 204 |

Jun. 12 Thurs 11am |
Jay Yang | Virtual resolutions of monomial ideals | Zoom |

Date | Speaker | Title [Click here for abstracts] | Location |
---|---|---|---|

Sep. 15 | Tim Magee | Convexity in tropical spaces and intrinsic NO bodies for cluster varieties | Zoom |

Sep. 22 | Steven Karp | Wronskians, total positivity, and real Schubert calculus | Zoom |

Sep. 29 | Brian Lehmann | Asymptotic geometry and convexity | Zoom |

Oct. 6 | Dave Anderson | Infinite flags and Schubert polynomials | Zoom |

Oct. 13 | Dustin Ross | Tropical fans, mixed volumes, and log-concavity | Zoom |

Oct. 20 | Madeleine Brandt | Tropical flag varieties | Zoom |

Oct. 27 | Ana Balibanu | Steinberg slices and group-valued moment maps | Zoom |

Nov. 3 | Ravindra Girivaru | Some (more) Lefschetz theorems for vector bundles | Zoom |

Nov. 10 | Evangelia Gazaki | Local-to-global principles for zero-cycles | Zoom |

Dec. 1 | Devin Akman | Intersection theory and Schubert cycles | Room 199 |

Dec. 8 | Jarosław Buczyński | Fujita vanishing, sufficiently ample line bundles, and cactus varieties | Zoom @11-12 |

Date | Speaker | Title [Click here for abstracts] |
---|---|---|

Feb. 10 | Stefano Filipazzi (UCLA) | On the boundedness of elliptically fibered varieties |

Feb. 17 | Genival da Silva Jr. | Remarks on the Hodge conjecture for Fermat varieties |

Mar. 10 | Hossein Movasati (IMPA) | Hodge cycles for cubic hypersurfaces |

Mar. 17 | Tom Ducat (Durham) | Reid's pagoda done `torically' |

Mar. 24 | Roya Beheshti (WUSTL) | Spaces of rational curves on Fano threefolds |

Mar. 31 | Jose Gonzalez (Riverside) | The Fulton-MacPherson compactification is not a Mori dream space |

Apr. 7 | Tatsunari Watanabe (ERAU) | An obstruction for sections of universal hyperelliptic curves |

Apr. 14 | Xiaojiang Cheng (WUSTL) | Hodge classes in the cohomology of automorphic local systems |

Apr. 21 | Vasily Golyshev (Moscow) | Fibered motives and modularity proofs |

Apr. 28 | Masha Vlasenko (IMPAN) | Integrality of instanton numbers |

May 5Note: 2 PM |
Alan Thompson (Loughborough) | The mirror Clemens-Schmid sequence |

Date | Speaker | Title [Click here for abstracts] |
---|---|---|

Sep. 16Note: 4:15PM |
Christian Schnell (Stony Brook) | Degenerating variations of Hodge structure, revisited |

Sep. 23Note: 8PM |
Zhiyuan Li (Fudan) | Noether-Lefschetz cycles on moduli space of quasi-polarized K3 surfaces |

Sep. 30 | Ben Wormleighton (WUSTL) | Symplectic embeddings via algebraic capacities |

Oct. 14 | Jonathan Lai (Imperial) | Compactified mirror families for log Calabi-Yau surfaces and periods |

Oct. 21 | James Lewis (Alberta) | Indecomposable K_{1}-classes on a surface and membrane integrals |

Oct. 28 | Alastair Craw (Bath) | Gale duality and the linearisation map for quiver moduli |

Nov. 11 | Tokio Sasaki (Miami) | Higher Chow cycles arising from some Laurent polynomials |

Dec. 2 | Wushi Goldring (Stockholm) | Propagating algebraicity via functoriality |

Dec. 9 | Johannes Walcher (Heidelberg) | On the rationality of MUMs and 2-functions |

Date | Speaker | Title |
---|---|---|

Jan. 15 | Luca Schaffler (U Mass) | Compactifications of moduli of points and lines in P^{2} |

Jan. 29 | Gregory Pearlstein (TAMU) | Differential geometry of the mixed Hodge metric |

Feb. 12 | Andrew Harder (Lehigh) | Log symplectic pairs and mixed Hodge structures |

Feb. 19 | Patricio Gallardo (WUSTL/Riverside) | Geography of quintic surfaces |

Feb. 26 | Sebastian Olano (Northwestern) | On the nonnegativity of stringy Hodge numbers |

Mar. 4 | Alexander Duncan (S. Carolina) | Distinguishing objects with separable algebras |

Apr. 1Note: on Zoom |
Ben Wormleighton (Berkeley) | Wall-crossing in the McKay correspondence |

Apr. 8Note: on Zoom |
Haohua Deng (WUSTL) | Oral Exam |

Apr. 22Note: on Zoom |
Adrian Clingher (UMSL) | K3 surfaces of high Picard rank |

Date | Speaker | Title [Click here for abstracts] |
---|---|---|

Sep. 4 | Colleen Robles (Duke) | Identification of Hodge Domains |

Sep. 11 | Kapil Paranjape (IISER/WUSTL) | Nori's theorem about Ceresa's cycle on abelian threefolds |

Sep. 18 | Francois Greer (Stony Brook) | A Lagrangian sphere which is not a vanishing cycle |

Sep. 25 | Humberto Diaz (WUSTL) | Unramified cohomology and the integral Hodge conjecture |

Oct. 2 | Patricio Gallardo (WUSTL) | Geometric interpretations of complex ball quotients |

Oct. 9 | Roya Beheshti (WUSTL) | Spaces of rational curves on Fano hypersurfaces |

Oct. 23, 24 | Ben Bakker (Georgia) | Hodge theory and o-minimality o-minimal GAGA |

Nov. 1Note: Friday, Rm. 6 |
Deepam Patel (Purdue) | Interpolating motives |

Nov. 4Note: Monday, Rm. 207 |
Chenglong Yu (U Penn) | Period integrals of vector bundle sections |

Nov. 15Note: Friday, Rm. 6 |
Charles Doran (Alberta/CMSA) | Glueing periods for DHT mirrors |

Nov. 20 | Radu Laza (Stony Brook) | Cohomology of hyperkaehler manifolds |

Dec. 11 | Kartik Prasanna (Michigan) | Cohomology of arithmetic groups and motivic cohomology |

Dec. 13Note: Friday, Room 199 |
Fumiaki Suzuki (UIC) | A pencil of Enriques surfaces with non-algebraic integral Hodge classes |

Date | Speaker | Title |
---|---|---|

Jan. 30 | Patricio Gallardo (WUSTL) | Comparing approaches for compactifying moduli spaces |

Feb. 6 | Donu Arapura (Purdue) | Algebraic cycles on genus two modular fourfolds |

Feb. 20 | Ryan Keast (U Toronto) | Motivic and integral Hodge classes |

Feb. 27 | Luca Schaffler (U Mass) | Compactifications of an interesting family of K3 surfaces
from 8 points in P^{1} |

Mar. 6 | Chenglong Yu (U Penn) | Moduli of symmetric cubic fourfolds and singular sextic curves |

Mar. 20 | Benjamin Schmidt (UT-Austin) | Vector bundles and reflexive sheaves with extremal Chern characters |

Mar. 27 | Humberto Diaz (UC-Riverside) | On the Chow ring structure of the cubic hypersurface |

Apr. 3 | Eric Katz (Ohio State) | Hodge theory in combinatorics |

Apr. 10 | James Lewis (Alberta) | The transcendental Abel-Jacobi map for K_{1} of a
surface |

Date | Speaker | Title |
---|---|---|

Sept. 14Note: Friday |
Satya Mandal (Kansas) | Homotopy obstructions for projective modules |

Sep. 19 | Martha Precup (WUSTL) | Affine pavings |

Sep. 26 | Laura Escobar (WUSTL) | Wall-crossing phenomena for Newton-Okounkov bodies |

Oct. 3 | Patricio Gallardo (WUSTL) | On Chow quotients |

Oct. 12Note: Friday |
Tony Pantev (U Penn) | Mirror symmetry, Langlands duality, and Hodge theory |

Oct. 24 | Jenia Tevelev (U Mass) | Derived categories of moduli of stable curves |

Oct. 31 | Laure Flapan (Northeastern) | Chow motives associated to certain algebraic Hecke characters |

Nov. 7Note: Wednesday |
Mark Green (UCLA) | Algebraic
Geometry over C for Beginners |

Nov. 14 | NO SEMINAR | JOB TALK WEEK |

Nov. 21 | NO SEMINAR | THANKSGIVING |

Nov. 28 | Matt Kerr (WUSTL) | Hodge Theory and Singularities, Part 1 |

Dec. 5 | Matt Kerr (WUSTL) | Hodge Theory and Singularities, Part 2 |

Date | Speaker | Title |
---|---|---|

Jan. 31 | Matt Kerr (WUSTL) | BBD and VHS |

Feb. 7 | Patricio Gallardo (WUSTL) | On double covers and their degenerations |

Feb. 15 | Radu Laza (Stony Brook) | Cubics and Hyperkählers |

Feb. 21Note: 3PM |
An Huang (Brandeis) | Hasse-Witt matrices and period integrals |

Feb. 28 | -------- | No seminar |

Mar. 7 | Tokio Sasaki/Muxi Li (WUSTL) | Limits and singularities for K_{1} cycles on algebraic
surfaces / Integral regulators for higher Chow complexes |

Mar. 14 | Spring break |
No seminar |

Mar. 21 | Sebastian Casalaina-Martin (CU-Boulder) | Algebraic representatives and intermediate Jacobians over perfect fields |

Mar. 28 | Benjamin Schmidt (UT-Austin) | The genus of space curves and derived categories |

Apr. 4 | Kristin DeVleming (U Washington) | Moduli of surfaces in
P^{3} |

Apr. 11 | Patricio Gallardo (WUSTL) | On singularities and variation of GIT |

Apr. 18 | Feng Hao (Purdue) | 1-motive associated to degeneration of curves |

Apr. 19 | Eyal Markman (U Mass) | Monodromy of generalized Kummer
varietiesNote: Rm. 113, 3-4 pm |

Apr. 25 | Cristian Martinez (UCSB) | Stability conditions on blow-ups and counterexamples |

Date | Speaker | Title |
---|---|---|

Sept. 18 | Kenneth Ascher (MIT) | Compactifications of the moduli space of elliptic surfaces |

Sept. 25 | Patricio Gallardo (WUSTL) | Compactifying plane curves of fixed degree |

Oct. 2 | Yajnaseni Dutta (Northwestern) | On Fujita type conjectures |

Oct. 9 | [no seminar] | |

Oct. 16 | Luca di Cerbo (ICTP/Stony Brook) | On the classification of toroidal compactifications of complex hyperbolic manifolds |

Oct. 23 | Alexander Jon Stathis (UGA) | Intersection theory on the Hilbert scheme of points in the projective plane |

Oct. 25 | Matt Kerr (WUSTL) | Irrationality of ζ(3) and higher normal functions |

Oct. 30 | Xudong Zheng (JHU) | The Hilbert scheme of points on singular surfaces |

Nov. 6 | Charles Doran (Alberta/ICERM) | Calabi-Yau manifolds, mirrors, and moduli |

Nov. 13 | Patricio Gallardo (WUSTL) | Point and line to plane |

Nov. 20 | Evangelos Routis (IPMU) | Complete complexes and spectral
sequencesNote:
2:10-3:00, Rm. 199 |

Nov. 20 | Andrew Harder (Miami) | Tyurin degenerations, mirror symmetry and
perverse sheaves of categoriesNote: 4:15-5:15 |

Nov. 27 | Jack Sonn (Technion) | Galois groups over the rationals with ramification constraints |

Nov. 28 | Laura Escobar (UIUC) | Bott-Samelson varieties and combinatorics |

Dec. 4 | Adrian Clingher (UMSL) | On Kummer surfaces with polarization of type (1,2) |

Dec. 5 | Eric Riedl (UIC) | Rational curves on hypersurfaces |

Dec. 7 | Florian Frick (Cornell) | Intersections of finite sets: geometry and topology |

Dec. 12 | Martha Precup (Northwestern) | The cohomology of abelian Hessenberg varieties |

Date | Speaker | Title |
---|---|---|

January 3Note: Tuesday |
Lei Wu (Northwestern) | Multi-indexed Deligne extensions and a Kawamata-Viehweg type vanishing theorem for log VHS |

March 29Note: 4:15 |
Ravindra Girivaru (UMSL) | Lefschetz conjectures for Chow groups -- an update |

April 5Note: Room 111 |
Tokio Sasaki (WUSTL) | Constructions of Calabi-Yau manifolds from reflexive polytopes |

April 12,13 | Deepam Patel (Purdue) | Semi-abelian motives Note:
4:30Enriched Hodge structures |

April 14 | Ludmil Katzarkov (Miami) | Center manifolds and Hodge theory |

April 19 | Roya Beheshti (WUSTL) | Recent developments in (stable) rationality, I |

April 26 | Roya Beheshti (WUSTL) | Recent developments in (stable) rationality, II |

May 10 | Patricio Gallardo (U. Georgia) | On geometric invariant theory for hypersurfaces and their hyperplane sections |

Date | Speaker | Title |
---|---|---|

September 7 | Mihnea Popa (Northwestern) | Hodge ideals |

September 14 | Patrick Brosnan (UMD) | The Shareshian-Wachs conjecture |

September 22 | Alena Pirutka (NYU) | Around rationality |

October 19 | Laure Flapan (UCLA) | Geometry and modularity of Schreider's varieties |

October 26, 27 | Martha Precup (Northwestern) | The Betti numbers of of regular
Hessenberg varieties and the dot action A generalization of the Springer resolution for GL _{n}(C) |

November 2 | Tokio Sasaki (WUSTL) | Explicit Hodge-D-Conjecture for some some families of
K3
surfaces |

November 9 | Kevin Kordek (TAMU) | Picard groups of moduli spaces of curves with symmetry |

Date | Speaker | Title |
---|---|---|

February 26 | Farbod Shokrieh (Cornell) | Classes of compactified Jacobians in the Grothendieck ring |

April 1 | Xuanyu Pan (WUSTL) | The geometry of cycles on higher Fano hypersurfaces |

April 8 | Genival da Silva Jr. (WUSTL) | Surfaces with exceptional monodromy |

April 15 | Amin Gholampour (Maryland) | Intersection numbers on the Hilbert
scheme of points on surfaces
[Note: Room 115] |

April 29 | James Lewis (Alberta) | The business of height pairings |

May 6 | Roya Beheshti (WUSTL) | Stably rational varieties |