Physics Colloquium:
Erik Winfree (Caltech)
"In vitro synthetic biology: from self-assembly to biochemical circuits"
4:10 p.m., 428 PUPIN HALL

Applied Mathematics Colloquium: (M. Weinstein and C. Wiggins)
Philip Holmes (Princeton/PACM)
"Collective neuronal dynamics and drift-diffusion models for decision making"
NOTE TIME AND LOCATION: 4:00 p.m., 210 Mudd

Mathematics of Finance Practitioners Seminar: (M. Smirnov)
Student Project Presentations
7:40-9:00 p.m., 207 Math.

Colloquium: ( M. Khovanov and E. Urban)
Carlos Simpson (Nice)
"On computer theorem-proving"
5:00 p.m., 520 Math. Tea will be served at 4:30 p.m., 508 Math.

THURSDAY, APRIL 26

ISCAP Journal Club: (S. Judes)
12:00 p.m., 908 Pupin.

DOUBLE HEADER I: Joint COLUMBIA-CUNY-NYU (Rotating among the 3 Universities)
Number Theory (D. Goldfeld, V. Kolyvagin, Y. Tschinkel,
A. Venkatesh,  S. Zhang,  L. Szpiro)
Wee Teck Gan (UCSD)
"Local Langlands conjecture for GSp(4)"
NYU, Courant Institute 13th Floor, 4:00-5:00 p.m.,  Tea will be served at 5:00 p.m.

Geometry/Analysis Seminar: (Z. Hou, N. Sesum)
Natasa Pavlovic (Princeton)
"On L² critical nonlinear Schrodinger equations"
NOTE TIME: 3:30 p.m., 507 Math.

Joseph Fels Ritt Lectures: (M. Thaddeus)
Joseph Harris (Harvard)
"Recent progress in algebraic curves - I"
4:30 p.m., 313 Fayerweather Hall
Tea will be served at 3:30 p.m. 508 Math.

DOUBLE HEADER II: Joint COLUMBIA-CUNY-NYU (Rotating among the 3 Universities)
Number Theory (D. Goldfeld, V. Kolyvagin, Y. Tschinkel,
A. Venkatesh,  S. Zhang,  L. Szpiro)
Claus Sorensen (Princeton)
"Level raising for GSp(4)"
NYU, Courant Institute 13th Floor, 5:30-7:00 p.m.,  Tea will be served at 5:00 p.m.

Mathematics of Finance Practitioners Seminar: (M. Smirnov)
Student Project Presentations
7:40-9:00 p.m., 207 Math.

Number Theory Workshop: (E. Urban)
Cristian Virdol
"Counting points on Shimura varieties over finite fields (after Kottwitz)"
10:00 a.m.-11:30am., 417 Math.

DOUBLE HEADER I: Geometric Topology:  (D. Thurston)
Kevin Walker (Microsoft)
"Khovanov homology as a 4-category; Khovanov skein modules for 4-manifolds"
10:45 a.m., 507 Math.

Probability:  (P. Bank, I.  Karatzas, M. Sirbu)
NO SEMINAR THIS WEEK.

DOUBLE HEADER II: Geometric Topology:  (D. Thurston)
Dusa McDuff  (Columbia and Stony Brook)
"Uniruled symplectic manifolds"
1:00 p.m., 507 Math.

Algebraic Geometry: (J. de Jong, M. Thaddues, J. Ross)
Tony Pantev (University of Pennsylvania)
"Generalized Hodge structures and mirror symmetry"
1:30 p.m., 417 Math.

CANCELLED FOR TODAY: ISCAP Seminar:
Jessie Shelton (Rutgers)
"Warp-suppressed supersymmetry breaking"
2:00 p.m., 908 Pupin.

Gauge Theory/Symplectic geometry: (C. Manolescu, M. Khovanov, P.S. Ozsváth)
Ronald Fintushel (Michigan State)
"Reverse engineering families of 4-manifolds"
2:30 p.m., 507 Math.

Samuel Eilenberg Lectures:
William Fulton (Michigan & Columbia)
“Equivariant cohomology in algebraic geometry"
NOTE TIME CHANGE THIS WEEK: 3:00 p.m., 203 Math.

Joseph Fels Ritt Lectures: (M. Thaddeus)
Joseph Harris (Harvard)
"Recent progress in algebraic curves II"
4:30 p.m., 313 Fayerweather Hall
Tea will be served at 3:30 p.m. 508 Math.