Closed-range posinormal operators and their products
نویسندگان
چکیده
We focus on two problems relating to the question of when product posinormal operators is posinormal, giving (1) necessary conditions and sufficient for have closed range, (2) commuting closed-range be with range. also discuss relationship between EP (as well as hypo-EP operators), concluding a new proof Hartwig–Katz Theorem, which characterizes Cn posinormal.
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ژورنال
عنوان ژورنال: Linear Algebra and its Applications
سال: 2023
ISSN: ['1873-1856', '0024-3795']
DOI: https://doi.org/10.1016/j.laa.2023.04.009