Norio Nawata

most citedFundamental group of simple

C^{*}

-algebras with unique trace

4 citations · 8 across the 3 of their papers we have counts for

collaborators

3 papers

math.OA2009★ 2 cited

$C^{*}$ -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 $C^{*}$ -algebras with unique trace

Norio Nawata, Yasuo Watatani

We introduce the fundamental group $F (A)$ of a unital simple $C^{*}$ -algebra $A$ with a unique normalized trace. We compute fundamental groups $F (A)$ of several…

math.OA2008★ 2 cited

Morita equivalent subalgebras of irrational rotation algebras and real quadratic fields

Norio Nawata

In this paper, we determine the isomorphic classes of Morita equivalent subalgebras of irrational rotation algebras. It is based on the solution of the quadratic Diophantine equati…

C∗-algebras associated with real multiplication

Fundamental group of simple C∗-algebras with unique trace

Morita equivalent subalgebras of irrational rotation algebras and real quadratic fields

$C^{*}$ -algebras associated with real multiplication

Fundamental group of simple $C^{*}$ -algebras with unique trace