Abstract
This paper collects 26 conditions for the reverse-order law $(AB)^{\dagger} = B^{\dagger}(A^{\dagger}ABB^{\dagger})^{\dagger}A^{\dagger}$ to hold for the Moore-Penrose inverse of matrix.
Citation
Yongge Tian. "The reverse-order law $(AB)^{\dag}=B^{\dag}(A^{\dag}ABB^{\dag})^{\dag}A^{\dag}$ and its equivalent equalities." J. Math. Kyoto Univ. 45 (4) 841 - 850, 2005. https://doi.org/10.1215/kjm/1250281660
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