On the invariants of the Hecke groups
L. Parson (1982)
Acta Arithmetica
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L. Parson (1982)
Acta Arithmetica
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Lubomír Kubáček, Ludmila Kubáčková (1999)
Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica
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Chin-Cheng Lin (1995)
Revista Matemática Iberoamericana
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We give a Hörmander-type sufficient condition on an operator-valued function M that implies the L-boundedness result for the operator T defined by (Tf)^ = Mf^ on the (2n + 1)-dimensional Heisenberg group H. Here ^ denotes the Fourier transform on H defined in terms of the Fock representations. We also show the H-L boundedness of T, ||Tf|| ≤ C||f||, for H under the same hypotheses of L-boundedness.
Meenakshi Prajneshu, Kanwar Sen (1982)
Trabajos de Estadística e Investigación Operativa
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S. K. Chatterjea (1961)
Rendiconti del Seminario Matematico della Università di Padova
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Yu, Zhou, Mingzhe, Gao (2008)
Acta Mathematica Universitatis Comenianae. New Series
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Khazanov, Alex (1995)
Serdica Mathematical Journal
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The Fermat equation is solved in integral two by two matrices of determinant one as well as in finite order integral three by three matrices.
R. A. Mollin, A. J. Van der Poorten, H. C. Williams (1994)
Journal de théorie des nombres de Bordeaux
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It is well known that the continued fraction expansion of readily displays the midpoint of the principal cycle of ideals, that is, the point halfway to a solution of . Here we notice that, analogously, the point halfway to a solution of can be recognised. We explain what is going on.