Abstract
It is shown that the properties of idempotents found in recent journal publications can be justified in an easier way if a classical theorem concerning the simultaneous reduction of a pair of complex idempotents to block triangular form is used.
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Published in Russian in Zhurnal Vychislitel’noi Matematiki i Matematicheskoi Fiziki, 2011, Vol. 51, No. 6, pp. 979–982.
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Ikramov, K.D. Simultaneous reduction to block triangular form and theorems on pairs of complex idempotents. Comput. Math. and Math. Phys. 51, 915–918 (2011). https://doi.org/10.1134/S0965542511060091
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DOI: https://doi.org/10.1134/S0965542511060091