Geodesic
The closeness of certain classes of matrices with respect to pseudo-inversion
Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 42 (2002) no. 9, pp. 1290-1294 Cet article a éte moissonné depuis la source Math-Net.Ru

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A. George; Kh. D. Ikramov. The closeness of certain classes of matrices with respect to pseudo-inversion. Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 42 (2002) no. 9, pp. 1290-1294. http://geodesic.mathdoc.fr/item/ZVMMF_2002_42_9_a1/

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[3] George A., Ikramov Kh., Kucherov A. B., “Sime properties of symmetric quasi-definite matrices”, SIAM J. Matrix Analys. Appl., 21:4 (2000), 1318–1323 | DOI | MR | Zbl