2019
Том 71
№ 11

All Issues

Mellit A. S.

Articles: 1
Brief Communications (Russian)

The Case Where the Sum of Three Partial Reflections is Equal to Zero

Mellit A. S.

↓ Abstract   |   Full text (.pdf)

Ukr. Mat. Zh. - 2003. - 55, № 9. - pp. 1277-1283

Up to unitary equivalence, we describe all irreducible triples of self-adjoint operators A 1, A 2, A 3 such that σ(A i) ⊂ |−1, 0, 1}, i = 1, 2, 3, and A 1 + A 2 + A 3 = 0.