Abstract
We use block operator matrix techniques to find new conditions so that the product of two commuting modular operators is EP, and establish some reverse order laws for such products.
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Mohammadzadeh Karizaki, M., Djordjević, D.S. Commuting \({{C^*}}\) modular operators. Aequat. Math. 90, 1103–1114 (2016). https://doi.org/10.1007/s00010-016-0424-0
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DOI: https://doi.org/10.1007/s00010-016-0424-0