Found 2290 results
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Almeida J. Minimal nonpermutative pseudovarieties of semigroups. I, II. Pacific J. Math.. 1986;121:257-270, 271-279.Edit
Basto-Gonçalves J. Minimal-dimensional realizations of Hamiltonian control systems. In: Theory and applications of nonlinear control systems ({S}tockholm, 1985). North-Holland, Amsterdam; 1986. 2. p. 233-240p.
Almeida J. Power pseudovarieties of semigroups. I, II. Semigroup Forum. 1986;33:357-373, 375-390.Edit
Almeida J. Some order properties of the lattice of varieties of commutative semigroups. Canad. J. Math.. 1986;38:19-47.Edit
Brito M. Sur l'encadrement optimal presque sûr dans un échantillon ordonné. C. R. Acad. Sci. Paris Sér. I Math.. 1986;303:821-824.
Yakubovich SB, Tuan VK, Marichev O., Kalla SL. A class of index integral transforms. Rev. Técn. Fac. Ingr. Univ. Zulia. 1987;10:105-118.Edit
Basto-Gonçalves J. Controllability in codimension one. J. Differential Equations. 1987;68:1-9.
Yakubovich SB. On the convolution for the Kontorovich-Lebedev transformation and its applications to integral equations. Dokl. Akad. Nauk BSSR. 1987;31:101-103, 188.
Almeida J, Azevedo A. Implicit operations on certain classes of semigroups. In: Semigroups and their applications (Chico, Calif., 1986). Reidel, Dordrecht; 1987. 1. p. 1-11p. Edit
d'Almeida FD, Rodrigues MJ. Is the iterative refinement of eigenelements an expensive technique?. In: Proceedings of the 2nd international conference on computational and applied mathematics (Leuven, 1986). Vol 20.; 1987. 1. p. 159-166p.
Rocha J. Periodic points of a continuous map of the interval. Portugal. Math.. 1987;44:361-370.
Basto-Gonçalves J. Realization theory for Hamiltonian systems. SIAM J. Control Optim.. 1987;25:63-73.
Almeida J. Residually finite congruences and quasiregular subsets in uniform algebras. In: Proceedings of the Second Meeting of Portuguese Algebraists (Portuguese) (Porto, 1987). Univ. Porto, Porto; 1987. 1. p. 11-31p. Edit
Basto-Gonçalves J. Sufficient conditions for local controllability with unbounded controls. SIAM J. Control Optim.. 1987;25:1371-1378.
Basto-Gonçalves J. Control of a neoclassic economic model. Portugal. Math.. 1988;45:417-428.
Tuan VK, Yakubovich SB. Kantorovich-Lebedev transformation of functions that admit exponential growth. Mat. Fiz. Neline\uın. Mekh.. 1988:6-9, 85.Edit
Almeida J. A notion of branching rank for semilattices with descending chain condition. Order. 1988;4:397-409.Edit
Cordovil R, A. de Oliveira G, M. Moreira L. Parallel projection of matroid spheres. Portugal. Math.. 1988;45:337-346.Edit
Almeida J. On pseudovarieties of monoids. In: Semigroups, theory and applications (Oberwolfach, 1986). Vol 1320. Springer, Berlin; 1988. 1. p. 11-17p. (Lecture Notes in Math.; vol 1320).Edit
da Silva MR, Rodrigues MJ. A simple alternative principle for rational τ-method approximation. In: Nonlinear numerical methods and rational approximation (Wilrijk, 1987). Vol 43. Reidel, Dordrecht; 1988. 4. p. 427-434p. (Math. Appl.; vol 43).Edit
Almeida J. Some pseudovariety joins involving the pseudovariety of finite groups. Semigroup Forum. 1988;37:53-57.Edit