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- José Antonio Álvarez-Bermejo, M. A. Lodroman, J. A. López-Ramos
- The Journal of Supercomputing
- 2014

In this paper we use the Diffie–Hellman key exchange protocol to introduce a decentralized key agreement protocol based on elliptic curves. We do not use any public key infrastructure, which makes it suitable for light devices with low computational and storage capabilities. Thus mobile devices can directly authorize other mobile devices to exchange keys in… (More)

We consider rings admitting a Matlis dualizing module E. We argue that if R admits two such dualizing modules, then a module is reflexive with respect to one if and only if it is reflexive with respect to the other. Using this fact we argue that the number (whether finite or infinite) of distinct dualizing modules equals the number of distinct invertible… (More)

For nonsingular n× n (n ≥ 6) pentadiagonal matrices P having nonzero entries on its second subdiagonal, we propose a procedure for computing both the determinant detP in O(n) times, and accurate information for obtaining the inverse P−1 in O(n) times. In the general nonsingular case, n ≥ 5, a suitable decomposition of P, as a product of two nonsingular… (More)

- Jesús Vigo-Aguiar, J. A. López-Ramos
- Int. J. Comput. Math.
- 2011

- J. A. Álvarez, M. A. Lodroman, J. A. López-Ramos
- Int. J. Comput. Math.
- 2015

- Octavio Noriega-Maldonado, Juan Luis Moreno-Moreno, Jesús López-Ramos, Adrián Roy Castellanos-Díaz
- Revista de gastroenterología de México
- 2007

- Edgar E. Enochs, Overtoun M. G. Jenda, J. A. López-Ramos
- Int. J. Math. Mathematical Sciences
- 2005

In 1966 [1], Auslander introduced a class of finitely generated modules having a certain complete resolution by projective modules. Then using these modules, he defined the G-dimension (G ostensibly for Gorenstein) of finitely generated modules. It seems appropriate then to call the modules of G-dimension 0 the Gorenstein projective modules. In [4],… (More)

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