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J.daProvidˆenciaandN.Bebiano,MatricessatisfyingaconjectureofG.N. de Oliveira on determinants, Linear Algebra Appl. 78 (1986), 187–198. Zbl 0592.15003
N. Bebiano, J. K. Merikoski and J. da Providˆencia, On a conjecture of G. N. de Oliveira on determinants, Linear Multilinear Algebra 20 (1987), 167–170. Zbl. 0612.15001
N. Bebiano and J. da Providˆencia, On the boundary of the C-numerical range of a normal matrix, Linear Multilinear Algebra 23 (1988), no. 2, 145–157. Zbl. 0644.15017
N. Bebiano, Some observations on the concept of permanent (in portuguese), In: Studies in mathematics. An homage to Renato Pereira Coelho, Departamento de Matem´atica, Faculdade de Ciˆencias e Tecnologia, Universidade de Coimbra, Coimbra, 1992, 145–154. Zbl 0791.15006.
N. Bebiano, O Enigma do Anel Serpenteante, Cl´assica Editora, 1993. N.Bebiano,A.KovaˇcecandJ.daProvidˆencia,ThevalidityoftheMarcus- de Oliveira conjecture for essentially Hermitian matrices, Linear Algebra Appl. 197-198 (1994), 411–427. Zbl. 0801.15005
N. Bebiano, Mathematical horizons: Light and darkness in Portugal in the 18th century, Hist. Math. 23 (1996), no. 3, 239–245. Zbl 0859.01013 N.BebianoandJ.daProvidˆencia,OnthedualofaresultofMirandaand Thompson, Linear Algebra Appl. 262 (1997), 119–129. Zbl 0912.15005
N. Bebiano and C. Perdiga˜o, Extremal matrices in certain determinantal inequal- ities, Linear Multilinear Algebra 44 (1998), no. 3, 261–276. Zbl 0928.15013
N. Bebiano, Matema´tica, ou Mesas, Cadeiras e Canecas de Cerveja, Gradiva 2000. N.Bebiano,BentoCarac¸aandmathematics,thisdiffusesubstance(inpor- tuguese), Gaz. Mat. 141 (2001), Lisboa, 11–23. Zbl 1029.01509
N. Bebiano, J. da Providˆencia (jun.) and R. Lemos, Matrix inequalities in sta- tistical mechanics, Linear Algebra Appl. 376 (2004), 265–273. Zbl 1037.15016 N. Bebiano, R. Lemos, J. da Providˆencia, and G. Soares, On generalized numer- ical ranges of operators on an indefinite inner product space, Linear Multilinear Algebra 52 (2004), no. 3-4, 203–233. Zbl 1059.15029
N. Bebiano, H. Nakazato, J. da Providˆencia, R. Lemos, and G. Soares, Inequal- ities for J-Hermitian matrices, Linear Algebra Appl. 407 (2005), 125–139. Zbl 1091.15024
N. Bebiano, Ruy Lu´ıs Gomes – life and work, (in portuguese), Bol. Soc. Port. Mat., Spec. Iss., (2006), 7–23. Zbl 1161.01312
N. Bebiano, J. da Providˆencia and R. Teixeira, Indefinite numerical range of 3×3 matrices, Czech. Math. J. 59 (2009), no. 1, 221–239. Zbl 1224.15043
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