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On Projections in the Noncommutative 2-Torus Algebra
Symmetry, integrability and geometry: methods and applications, Tome 10 (2014) Cet article a éte moissonné depuis la source Math-Net.Ru

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We investigate a set of functional equations defining a projection in the noncommutative 2-torus algebra $A_{\theta}$. The exact solutions of these provide various generalisations of the Powers–Rieffel projection. By identifying the corresponding $K_0(A_{\theta})$ classes we get an insight into the structure of projections in $A_{\theta}$.
Mots-clés : noncommutative torus; projections; noncommutative solitons. 
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     author = {Micha{\l} Eckstein},
     title = {On {Projections} in the {Noncommutative} {2-Torus} {Algebra}},
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Michał Eckstein. On Projections in the Noncommutative 2-Torus Algebra. Symmetry, integrability and geometry: methods and applications, Tome 10 (2014). http://geodesic.mathdoc.fr/item/SIGMA_2014_10_a28/

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