@article{He2026, 
author = {Jianmei He and Lanxin Chen and Zhengyu Guo},
title = {Automorphisms of the totally isotropic subspace inclusion graph of unitary spaces},
year = {2026},
journal = {AIMS Mathematics},
volume = {11},
number = {4},
pages = {9819-9844},
keywords = {automorphisms, totally isotropic subspace, unitary space, inclusion graph},
url = {https://www.sciopen.com/article/10.3934/math.2026406},
doi = {10.3934/math.2026406},
abstract = {Let        F                  q                  2                     be a finite field of        q          2       elements, where    q is a power of a prime and              U              n       an    n-dimensional unitary space over        F                  q                  2                    . The inclusion graph of the totally isotropic subspace of              U              n      , written as        I    n  (            U              n        ), is a graph which has all totally isotropic subspaces of              U              n       as its vertices and two distinct, totally isotropic subspaces        U          1      ,        U          2       of              U              n       which are adjacent if and only if        U          1        ⊂      U          2       or        U          2        ⊂      U          1      . In this paper, all automorphisms of        I    n  (            U              n        ) are determined definitely.}
}