The paper includes new and easily computable criteria to distinguish between the cases λ=0, λ=1, λ=2 and λ≥3. In particular, I look at the case where the p-adic L-function and the Iwasawa power series have a trivial (exceptional) zero. The open access article is available here.
Paper on special values of p-adic L-functions and Iwasawa λ-invariants of Dirichlet characters
Heiko Knospe
Professor für Mathematik in der Nachrichtentechnik
My research interests include number theory, cryptography and network security.