428 citations
- The University of TokyoJP12 papers
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Showing 2009 · math.OAShow all
2 papers · 2 filters
math.OA2009★ 2 cited
-algebras associated with real multiplication
Norio Nawata
Noncommutative tori with real multiplication are the irrational rotation algebras that have special equivalence bimodules. Y. Manin proposed the use of noncommutative tori with rea…
math.OA2009★ 4 cited
Fundamental group of simple -algebras with unique trace
Norio Nawata, Yasuo Watatani
We introduce the fundamental group of a unital simple -algebra with a unique normalized trace. We compute fundamental groups of several…