I read article An elementary proof of Komlós-Révész theorem in Hilbert spaces by Guessous Mohamed (see page 328). But I don't understand why : if $h_{m+j}=f^{'}_{n_p}$ then $2\leq k\leq p$
2026-03-10 11:39:23.1773142763
why if $h_{k}=f^{'}_{n_p}$ then $2\leq k\leq p$
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