Publications
Found 550 results
Author Title Type [ Year
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Is autonomic control of the heart rate at rest altered by detraining? A study of heart rate variability in professional soccer players. {Revista portuguesa de cardiologia : orgão oficial da Sociedade Portuguesa de Cardiologia = Portuguese journal of cardiology : an official journal of the Portuguese Society of Cardiology}. 1997;{16}:{535-541, 508}.Edit
On convolution integrals associated with $H$-transforms. J. Fract. Calc.. 1997;11:53-65.Edit
Large measure of hyperbolic dynamics when unfolding heteroclinic cycles. Nonlinearity. 1997;10:857-884.Edit
Non-critical saddle-node cycles and robust non-hyperbolic dynamics. Dynam. Stability Systems. 1997;12:109-135.Edit
Numerical solution of partial differential equations with the tau method. In: First Meeting on Numerical Methods for Partial Differential Equations (Coimbra, 1995). Vol 11. Univ. Coimbra, Coimbra; 1997. 1. p. 111-121p. (Textos Mat. Sér. B; vol 11).Edit
On Cohen-Macaulay and Gorenstein simplicial affine semigroups. Proc. Edinburgh Math. Soc. (2). 1998;41:517-537.Edit
On Cohen-Macaulay subsemigroups of $\bold N^2$. Comm. Algebra. 1998;26:2543-2558.Edit
Nonnegative elements of subgroups of $\bf Z^n$. Linear Algebra Appl.. 1998;270:351-357.Edit
On numerical semigroups with high embedding dimension. J. Algebra. 1998;203:567-578.Edit
Erratum: ``Maps of the two-sphere at the boundary of chaos'' [Nonlinearity \bf 7 (1994), no. 4, 1251–1259; MR1284691 (95e:58107)]. Nonlinearity. 1999;12:443.Edit
Finitely generated commutative monoids Nova Science Publishers, Inc., Commack, NY 1999.Edit
On free affine semigroups. Semigroup Forum. 1999;58:367-385.Edit
Nonoverlapping Domain Decomposition Applied to a Computational Fluid Mechanics Code. In: Amestoy PR, Berger P, Daydé M, Ruiz D, Duff I, Frayssé V et al., editors. Euro-Par'99 Parallel Processing: 5th International Euro-Par Conference Toulouse, France, August 31 – September 3, 1999 Proceedings. Vol 1685. Springer Berlin Heidelberg; 1999. 6. p. 608-612p. (Lecture Notes in Computer Science; vol 1685).Edit
On normal affine semigroups. Linear Algebra Appl.. 1999;286:175-186.Edit
Numerical semigroups generated by intervals. Pacific J. Math.. 1999;191:75-83.Edit
Presentations for subsemigroups of finitely generated commutative semigroups. Israel J. Math.. 1999;113:269-283.Edit
On presentations of commutative monoids. Internat. J. Algebra Comput.. 1999;9:539-553.Edit
On the structure of Cohen-Macaulay simplicial affine semigroups. Comm. Algebra. 1999;27:511-518.Edit
Clustered multiple regression. In: Kiers H.AL, Rasson J.P, Gronen P.JF, Schader M., editors. Data Analysis, Classification, and Related Methods.; 2000. 2. p. 217-222p. (Studies in Classification, Data Analysis, and Knowledge Organization).Edit
On full affine semigroups. J. Pure Appl. Algebra. 2000;149:295-303.Edit
How to check if a finitely generated commutative monoid is a principal ideal commutative monoid. In: Proceedings of the 2000 International Symposium on Symbolic and Algebraic Computation (St. Andrews). ACM, New York; 2000. 2. p. 288-291p. (electronic).Edit
Measures to evaluate rankings of classification algorithms. In: Kiers H.AL, Rasson J.P, Gronen P.JF, Schader M., editors. Data Analysis, Classification, and Related Methods.; 2000. 1. p. 119-124p. (Studies in Classification, Data Analysis, and Knowledge Organization).Edit
Reduced commutative monoids with two Archimedean components. Boll. Unione Mat. Ital. Sez. B Artic. Ric. Mat. (8). 2000;3:471-484.Edit
On the structure of simplicial affine semigroups. Proc. Roy. Soc. Edinburgh Sect. A. 2000;130:1017-1028.Edit