Elek, Balazs2018-10-232018-10-232018-05-30Elek_cornellgrad_0058F_10829http://dissertations.umi.com/cornellgrad:10829bibid: 10489561https://hdl.handle.net/1813/59476A Kazhdan-Lusztig atlas, introduced by He, Knutson and Lu, on a stratified variety (V,Y) is a way of modeling the stratification Y of V locally using the stratification of Kazhdan-Lusztig varieties. We are interested in classifying smooth toric surfaces with Kazhdan-Lusztig atlases. This involves finding a degeneration of V to a union of Richardson varieties in the flag variety H/B_H of some Kac-Moody group H. We determine which toric surfaces have a chance at having a Kazhdan-Lusztig atlas by looking at their moment polytopes, then describe a way to find a suitable group H. More precisely, we find that (up to equivalence) there are 19 or 20 broken toric surfaces admitting simply-laced atlases, and that there are at most 7543 broken toric surfaces where H is any Kac-Moody group.en-USAlgebraic GeometryRepresentation TheoryMathematicsdissertation or thesishttps://doi.org/10.7298/X4NZ85WK