### Abstract

We construct, for any symplectic, unitary or special orthogonal group over a locally compact nonarchimedean local field of odd residual characteristic, a type for each Bernstein component of the category of smooth representations, using Bushnell-Kutzko's theory of covers. Moreover, for a component corresponding to a cuspidal representation of a maximal Levi subgroup, we prove that the Hecke algebra is either abelian, or a generic Hecke algebra on an infinite dihedral group, with parameters which are, at least in principle, computable via results of Lusztig. In an appendix, we make a correction to the proof of a result of the second author: that every irreducible cuspidal representation of a classical group as considered here is irreducibly compactly-induced from a type.

Original language | English |
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Pages (from-to) | 257-288 |

Number of pages | 32 |

Journal | Mathematische Annalen |

Volume | 358 |

Issue number | 1-2 |

DOIs | |

Publication status | Published - Jan 1 2014 |

Externally published | Yes |

### ASJC Scopus subject areas

- Mathematics(all)

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## Cite this

*Mathematische Annalen*,

*358*(1-2), 257-288. https://doi.org/10.1007/s00208-013-0953-y