Let W and L be complementary spaces of a finite dimensional unitary space V and let P(W, L) denote the projection of V on W parallel to L. Estimates for the norm of P(W, L) - P(W, M) are derived which involve the norm of the restriction of P(W, L) to M or the gap between L and M.
机构:
Univ Buenos Aires, CONICET, Inst Argentino Matemat, Buenos Aires, DF, ArgentinaUniv Buenos Aires, CONICET, Inst Argentino Matemat, Buenos Aires, DF, Argentina
Corach, Gustavo
Giribet, Juan I.
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机构:
Univ Buenos Aires, CONICET, Inst Argentino Matemat, Buenos Aires, DF, ArgentinaUniv Buenos Aires, CONICET, Inst Argentino Matemat, Buenos Aires, DF, Argentina