Department of

November 2019December 2019January 2020 Su Mo Tu We Th Fr SaSuMo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa 1 2 1 2 3 4 5 6 7 1 2 3 4 3 4 5 6 7 8 989 10 11 12 13 14 5 6 7 8 9 10 11 10 11 12 13 14 15 16 15 16 17 18 19 20 21 12 13 14 15 16 17 18 17 18 19 20 21 22 23 22 23 24 25 26 27 28 19 20 21 22 23 24 25 24 25 26 27 28 29 30 29 30 31 26 27 28 29 30 31

Tuesday, January 22, 2019

**Abstract:** Eigenvalue problems with positive weights are related to heat flow and wave propagation in inhomogeneous media. Sign-changing weights have ecological interpretations, and generate spectra that accumulate at both positive and negative infinity. This talk will discuss recent results on limits of such eigenvalue problems when a negative portion of the weight is made arbitrarily large.

Tuesday, March 19, 2019

Tuesday, August 27, 2019

Tuesday, September 3, 2019

Tuesday, September 17, 2019

Tuesday, October 15, 2019

Tuesday, October 22, 2019

Tuesday, November 12, 2019

Tuesday, November 19, 2019

Tuesday, December 3, 2019