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On zero free sets.

Ordaz, Oscar ; Quiroz, Domingo

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p. 1-10

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Hamiltonian cycles and Hamiltonian-biconnectedness in bipartite digraphs.

Amar, Denise ; Brito, Daniel ; Ordaz, Oscar

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p. 11-29

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On approximately semiopen maps in topological spaces.

Caldas, Miguel ; Saraf, Ratnesh K.

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p. 31-37

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Around a quotient space of Bennett-Lutzer's space.

Ge, Ying

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p. 39-46

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A proof of the Schauder-Tychonoff theorem.

Díaz, Lolimar ; Naulin, Raúl

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p. 47-57

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Algorithm for finding a biquadratic cyclotomic extension field of ℚ.

Pérez, A., Amílcar J.

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p. 59-72

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Control of a DC brush motor via dynamic output feedback. (Control por realimentación dinámica de salida de un motor DC.)

Morillo, Atilio ; Ríos-Bolívar, Miguel ; Acosta de Contreras, Vivian

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p. 73-92

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ϕ(F11)=88.

Luca, Florian ; Mignotte, Maurice

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p. 101-106

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Orders of some modular linear groups.

Quintero, Roy

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p. 107-120

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Constant mean curvature surfaces bounded by a circle.

López, Rafael

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p. 121-140

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History of linear algebra up to a dawn of the 20th century.

Luzardo, Deivi ; Peña P., Alirio J.

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p. 153-170

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