Calendar

Mar
10
Fri
Colloquium: Michael Brown (Auburn University) @ Keller 302
Mar 10 @ 2:30 pm – 3:30 pm

Title: Free resolutions of projective curves

Abstract: I will give an introduction to a circle of ideas lying at the intersection of commutative algebra and algebraic geometry concerning the influence of geometry on algebraic gadgets called free resolutions. Specifically, I’ll discuss a landmark 1984 theorem in this direction due to Mark Green, along with a recent generalization of this result due to myself and Daniel Erman.

Mar
22
Wed
Colloquium – Olivier Martin (Stony Brook) @ Keller 302
Mar 22 @ 3:30 pm – 4:30 pm
Mar
23
Thu
Applied math seminar: Mathias Ross (UCLA) @ Keller 301
Mar 23 @ 2:30 pm – 3:30 pm

Title: Simulating Rotating Detonation Rocket Engines

Abstract: Most rocket engines are designed to avoid the formation of detonation waves, due to the tendency of such waves to cause damage inside the engine.  However, incorporating detonations into rocket design has the potential to improve engine performance — rotating detonation rocket engines aim to harness this potential, but the associated rapid fluctuations in temperature and pressure make the devices difficult to analyze experimentally.  These challenges increase the importance of models that are capable of reproducing and explaining the large-scale behavior that can be observed in experiments.  We use a series of simulations to explore how changing nozzle geometries affects detonation dynamics inside the combustion chamber, and show that the simulations capture experimentally-observed wave behavior.  The simulations further demonstrate that, although the addition of a nozzle increases engine thrust, the changes in engine behavior can be detrimental to overall engine performance.

Colloquium – Jean-Marie de Koninck (Laval) @ Keller 301
Mar 23 @ 3:30 pm – 4:30 pm
Special Number Theory seminar: Nha Truong
Mar 23 @ 4:30 pm – 5:30 pm

Keller 302

Mar
28
Tue
Colloquium – Hao Wang (Alberta) @ Keller 301
Mar 28 @ 3:30 pm – 4:30 pm
Mar
29
Wed
Colloquium – Thorsten Heidersdorf (Bonn) @ Keller 302
Mar 29 @ 3:30 pm – 4:30 pm
Apr
3
Mon
grad student seminar @ keller 401
Apr 3 @ 1:00 pm – Apr 3 @ 2:00 pm