2 papers
math.NT2025
Normalized Indexing for Ramification Subgroups
Stephen DeBacker, David Schwein, Cheng-Chiang Tsai
This expository note introduces a normalization of the indexing of the lower and upper numbering ramification subgroups of local class field theory. We then look at how this normal…
math.RT2025
Langlands parameters for Moy-Prasad types
Tsao-Hsien Chen, Stephen DeBacker, Cheng-Chiang Tsai
Suppose is a tamely ramified -adic reductive group. We construct a partial local Langlands correspondence between the set of irreducible smooth representations of having…