Parra, Carlos; Parra, Rafael; Rada, Juan Almost preenvelopes of commutative rings. (English) Zbl 1267.13018 Notas Mat. 5, No. 2, 20-28 (2009). MSC: 13C05 PDF BibTeX XML Cite \textit{C. Parra} et al., Notas Mat. 5, No. 2, 20--28 (2009; Zbl 1267.13018)
Karacan, Murat Kemal; Bukcu, Bahaddin The Bishop Darboux rotation axis of the spacelike curves with a spacelike principal normal in Minkowski 3-space. (English) Zbl 1267.53003 Notas Mat. 5, No. 2, 29-35 (2009). MSC: 53A04 53A35 53B30 PDF BibTeX XML Cite \textit{M. K. Karacan} and \textit{B. Bukcu}, Notas Mat. 5, No. 2, 29--35 (2009; Zbl 1267.53003)
Lárez Velazquez, Hánzel Gabriel A formula for the content of a domino of three faces. (Spanish. English summary) Zbl 1267.05060 Notas Mat. 5, No. 2, 35-41 (2009). MSC: 05B45 PDF BibTeX XML Cite \textit{H. G. Lárez Velazquez}, Notas Mat. 5, No. 2, 35--41 (2009; Zbl 1267.05060)
Askari, S. A new proof for the Euler theorem in the complex numbers theory. (English) Zbl 1267.97014 Notas Mat. 5, No. 2, 42-44 (2009). MSC: 97I80 30A99 PDF BibTeX XML Cite \textit{S. Askari}, Notas Mat. 5, No. 2, 42--44 (2009; Zbl 1267.97014)
Konieczny, Sébastien; Medina Grespan, Mattia; Pino P., Ramón A. Taxonomy of improvement operators and the problem of minimal change. (English) Zbl 1267.68235 Notas Mat. 5, No. 2, 45-60 (2009). MSC: 68T37 PDF BibTeX XML Cite \textit{S. Konieczny} et al., Notas Mat. 5, No. 2, 45--60 (2009; Zbl 1267.68235)
Naulin, Raul; Uzcátegui Aylwin, Carlos Enrique On the complexity of the family of compact subsets of \(\mathbb{Q}\). (English) Zbl 1267.54034 Notas Mat. 5, No. 2, 61-65 (2009). MSC: 54H05 54A10 PDF BibTeX XML Cite \textit{R. Naulin} and \textit{C. E. Uzcátegui Aylwin}, Notas Mat. 5, No. 2, 61--65 (2009; Zbl 1267.54034)
Leiva A., Hugo Antonio; Quintana, Yamilet Interior controllability of a broad class of reaction diffusion equations. (English) Zbl 1267.93022 Notas Mat. 5, No. 2, 1-11 (2009). MSC: 93B05 93C25 PDF BibTeX XML Cite \textit{H. A. Leiva A.} and \textit{Y. Quintana}, Notas Mat. 5, No. 2, 1--11 (2009; Zbl 1267.93022)
Morales Medina, José Roberto Fixed point theorems for Banach \(T\)-operators. (Spanish. English summary) Zbl 1267.47086 Notas Mat. 5, No. 2, 12-20 (2009). MSC: 47H10 PDF BibTeX XML Cite \textit{J. R. Morales Medina}, Notas Mat. 5, No. 2, 12--20 (2009; Zbl 1267.47086)