Geodesic
Moore–Penrose inverse of bidiagonal matrices. III
Proceedings of the Yerevan State University. Physical and mathematical sciences, no. 1 (2016), pp. 12-21.

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The present paper is a direct continuation of the papers [1,2]. We obtain intermediate results, which will be used in the next final fourth part of this study, where a definitive solution to the Moore–Penrose inversion problem for singular upper bidiagonal matrices is given.
Keywords: generalized inverse, Moore–Penrose inverse
Mots-clés : bidiagonal matrix. 
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Yu. R. Hakopian; S. S. Aleksanyan. Moore–Penrose inverse of bidiagonal matrices. III. Proceedings of the Yerevan State University. Physical and mathematical sciences, no. 1 (2016), pp. 12-21. http://geodesic.mathdoc.fr/item/UZERU_2016_1_a2/

[1] Yu. R. Akopian, S. S. Aleksanyan, “Moore–Penrose inverse of bidiagonal matrices. I”, Proceedings of the YSU, Physics $\$ Mathematics, 2015, no. 2, 11–20 | Zbl

[2] Yu. R. Akopian, S. S. Aleksanyan, “Moore–Penrose inverse of bidiagonal matrices. II”, Proceedings of the YSU, Physics $\$ Mathematics, 2015, no. 3, 8–16 | Zbl