Erratum to "$B_2$-crystals: Axioms, structure, models" [J. Combin. Theory, Ser. A, 116 (2009), 265--289]
Vladimir Ivanovich Danilov, Alexander V. Karzanov, Gleb Alekseevich Koshevoy · arXiv (Cornell University) · 2019
In this erratum we explain how to implement some axioms stated in our paper of 2009 so as to obtain a purely "local" characterization for finite $B_2$-crystals, which was declared but not clarified at some moments there. Also we correct some inaccuracies in that paper.