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math.NT2021★ 1 cited
On Tamagawa numbers of CM tori
Pei-Xin Liang, Yasuhiro Oki, Hsin-Yi Yang +1
In this article we investigate the problem of computing Tamagawa numbers of CM tori. This problem arises naturally from the problem of counting polarized abelian varieties with com…
math.NT2021
On the connected components of Shimura varieties for CM unitary groups in odd variables
Yasuhiro Oki
We study the prime-to- Hecke action on the projective limit of the sets of connected components of Shimura varieties with fixed parahoric or Bruhat--Tits level at . In partic…