4 citations · 13 across the 15 of their papers we have counts for
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math.CO2018
Checkerboard colourable twisted duals
Qi Yan, Xian'an Jin
In this note we show that any embedded graph has a checkerboard colourable twisted dual and any Eulerian embedded graph has a checkerboard colourable partial Petrial, answering que…
math.AG2018★ 2 cited
Ekedahl-Oort stratifications of Shimura varieties via Breuil-Kisin windows
Qijun Yan
Let be the special fibre of the good reduction of a Shimura variety of Hodge type. By constructing adapted deformations for the associated -divisible groups of , we m…