In the Amemiya-Ando problem 3 is enough
Functional Analysis
2012-08-07 v1
Abstract
In any infinite dimensional Hilbert space there exist orthogonal projections , and , such that a sequence diverges in norm for some and .
Cite
@article{arxiv.1208.0905,
title = {In the Amemiya-Ando problem 3 is enough},
author = {Adam Paszkiewicz},
journal= {arXiv preprint arXiv:1208.0905},
year = {2012}
}