Sh:806

• Shelah, S. Martin’s axiom and maximal orthogonal families. Real Anal. Exchange, 28(2), 477–480. arXiv: math/0211438 DOI: 10.14321/realanalexch.28.2.0477 MR: 2010330
• Abstract:
  It is shown that Martin’s Axiom for \sigma-centred partial orders implies that every maximal orthogonal family in {\mathbb R}^{\mathbb N} is of size 2^{\aleph_0}.
• Version 2003-02-24_11 (3p) published version (4p)

@article{Sh:806,
 author = {Shelah, Saharon},
 title = {{Martin's axiom and maximal orthogonal families}},
 journal = {Real Anal. Exchange},
 fjournal = {Real Analysis Exchange},
 volume = {28},
 number = {2},
 year = {2002/03},
 pages = {477--480},
 issn = {0147-1937},
 mrnumber = {2010330},
 mrclass = {03E65 (03E50)},
 doi = {10.14321/realanalexch.28.2.0477},
 note = {\href{https://arxiv.org/abs/math/0211438}{arXiv: math/0211438}},
 arxiv_number = {math/0211438}
}