Publications (11)
Kohnert posets and polynomials of northeast diagrams
Aram Bingham, Beth Anne Castellano, Kimberly P. Hadaway +4
Kohnert polynomials and their associated posets are combinatorial objects with deep geometric and representation theoretic connections, generalizing both Schubert polynomials and t…
Which shapes can appear in a Curve Shortening Flow Singularity?
Sigurd Angenent, Evan Patrick Davis, Ellie DeCleene +7
We study possible tangles that can occur in singularities of solutions to plane Curve Shortening Flow. We exhibit solutions in which more complicated tangles with more than one sel…
Reconstruction of C_4-free graphs from the set of closed neighborhoods and digital convexity
Steffen Borgwardt, MacKenzie Carr, Ce Chen +4
Fomin, KratochvÃl, Lokshtanov, Mancini, and Telle showed that every -free graph is reconstructible from the \emph{multiset} of closed neighborhoods. We strengthen their res…
On some discrete statistics of parking functions
Ari Cruz, Pamela E. Harris, Kimberly J. Harry +5
Recall that is a parking function if its nondecreasing rearrangement satisfies for all . In t…
The Defective Parking Space and Defective Kreweras Numbers
Rebecca E. Garcia, Pamela E. Harris, Alex Moon +5
A defective -parking function with defect is a parking function with cars attempting to park on a street with parking spots in which exactly cars fail to par…
Two combinatorial puzzles arising from the theory of Kohnert polynomials
Theo Koss, Nicholas Mayers, Alex Moon
Motivated by recent work of Hanser and Mayers, we study two combinatorial puzzles arising from the theory of Kohnert polynomials. Such polynomials are defined as generating polynom…
Writing and detecting topological charges in exfoliated FeGeTe
Alex Moon, Yue Li, Conor McKeever +10
FeGeTe is a promising two-dimensional (2D) van der Waals (vdW) magnet for practical applications, given its magnetic properties. These include Curie temperatures above…
Coexistence of Merons with Skyrmions in the Centrosymmetric van der Waals Ferromagnet Fe5GeTe2
Brian W. Casas, Yue Li, Alex Moon +8
FeGeTe is a centrosymmetric, layered van der Waals (vdW) ferromagnet that displays Curie temperatures (270-330 K) that are within the useful range for spintronic…
Magnetic field-induced non-trivial electronic topology in Fe3GeTe2
Juan Macy, Danilo Ratkovski, Purnima P. Balakrishnan +16
The anomalous Hall, Nernst and thermal Hall coefficients of FeGeTe display several features upon cooling, like a reversal in the Nernst signal below K pointing…
Local Inversion Symmetry Breaking and Thermodynamic Evidence for Ferrimagnetism in Fe3GaTe2
Sang-Eon Lee, Yue Li, Yeonkyu Lee +19
The layered compound Fe3GaTe2 is attracting attention due to its high Curie temperature, low dimensionality, and the presence of topological spin textures above room temperature, m…
Kramers nodal lines in intercalated TaS superconductors
Yichen Zhang, Yuxiang Gao, Aki Pulkkinen +24
Kramers degeneracy is one fundamental embodiment of the quantum mechanical nature of particles with half-integer spin under time reversal symmetry. Under the chiral and noncentrosy…