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Affine Surfaces which are Both Affine Harmonic and Affine Maximal
Results in Mathematics, 1995In this interesting paper the authors classify all indefinite surfaces in affine 4-space which are both affine harmonic and affine maximal.
Dillen, Franki, Vrancken, Luc
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Proceedings of the Royal Society of London. Series B - Biological Sciences, 1955
Abstract On the basis of a number of aberrant linkage-like segregations obtained by various workers from hybrids between European and Asiatic races of mice (Gates 1926; Little 1927; Green 1931), it is suggested that in murine, and presumably in other, subspecific hybrids there is a tendency for centromeres of similar ancestral origin ...
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Abstract On the basis of a number of aberrant linkage-like segregations obtained by various workers from hybrids between European and Asiatic races of mice (Gates 1926; Little 1927; Green 1931), it is suggested that in murine, and presumably in other, subspecific hybrids there is a tendency for centromeres of similar ancestral origin ...
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Letters in Mathematical Physics, 1994
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Boyarchenko, SI, Levendorskii, SZ
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zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Boyarchenko, SI, Levendorskii, SZ
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Affine Transformations in Affine Differential Geometry
Results in Mathematics, 1989For a \(C^{\infty}\) hypersurface immersion f: \(M^ n\to R^{n+1}\), with M orientable, let \(\nabla\) be the affine connection induced by the affine normal and let h be the corresponding (first affine) fundamental form. The author studies the Lie subgroup of those affine transformations of M, with respect to \(\nabla\), that preserve h, namely \(G ...
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International Journal of Computer Vision, 1996
It is shown that the set of all paraperspective images with arbitrary reference point and the set of affine images of a 3-D object are identical. Consequently, all uncalibrated paraperspective images of an object can be constructed from a 3-D model of the object by applying an affine transformation to the model and every affine image of the object ...
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It is shown that the set of all paraperspective images with arbitrary reference point and the set of affine images of a 3-D object are identical. Consequently, all uncalibrated paraperspective images of an object can be constructed from a 3-D model of the object by applying an affine transformation to the model and every affine image of the object ...
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Canadian Journal of Mathematics, 1979
The decomposition of mappings into a minimal number of simple mappings is a common sight in geometry. One well-known instance is the representation of a plane motion by three reflections (see e.g. H. S M. Coxeter [3]) or the representation of equiaffinities by a minimal number of shears or reflections ([14], [5], [7], [8]).
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The decomposition of mappings into a minimal number of simple mappings is a common sight in geometry. One well-known instance is the representation of a plane motion by three reflections (see e.g. H. S M. Coxeter [3]) or the representation of equiaffinities by a minimal number of shears or reflections ([14], [5], [7], [8]).
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The Affinities of “Hesperornis”
Nature, 1897IN the autumn of 1870, I discovered, in the Cretaceous of Western Kansas, the remains of a very large swimming-bird, which in many respects is the most interesting member of the class hitherto found, living or extinct. During the following year, other specimens were obtained in the same region, and one of them—a nearly perfect skeleton—I named ...
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Affine, Quasi-affine and Co-affine Frames
2021Biswaranjan Behera, Qaiser Jahan
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