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C -algebra generated by four projections with sum equal to 2

C -algebra generated by four projections with sum equal to 2

Savchuk, Yuri
URI: http://hdl.handle.net/123456789/124
Date: 2004

Abstract:

We describe the C -algebra generated by four orthogonal projections p1, p2, p3, p4, satisfying the linear relation p1 + p2 + p3 + p4 = 2I. The simplest realization by 2 × 2-matrixfunctions over the sphere S2 is given.

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