On a question of Hills concerning co-transposers
Laffey, Thomas J. (1985-1986)
Portugaliae mathematica
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Laffey, Thomas J. (1985-1986)
Portugaliae mathematica
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Ljubica S. Velimirović, Svetislav M. Minčić, Mića S. Stanković (2003)
Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica
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Gião, António (1949)
Portugaliae mathematica
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Demetra Demetropoulou-Psomopoulou (1997)
Publicacions Matemàtiques
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The present work is based on a type of structures on a differential manifold V, called G-structures of the second kind, defined by endomorphism J on the second order tangent bundle T(V ). Our objective is to give conditions for a differential manifold to admit a real almost product and a generalised almost tangent structure of second order. The concepts of the second order frame bundle H(V ), its structural group L and its associated tangent bundle of second order T(V ) of a differentiable...
Tsai, Chester E. (1967)
Portugaliae mathematica
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(1993)
Compositio Mathematica
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Shen-Chi Tang (1965)
Collectanea Mathematica
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Gaspar Mayor Forteza, Tomasa Calvo Sánchez (1994)
Mathware and Soft Computing
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From the concept of attractor of a family of contractive affine transformations in the Euclidean plane R, we study the fractality property of the De Rham function and other singular functions wich derive from it. In particular, we show as fractals the strong negations called k-negations.