Results 241 to 250 of about 127,042 (284)
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JAMA: The Journal of the American Medical Association, 1965
The involuting hemangioma, or strawberry birthmark, is small or absent at the time of birth. During the first six or eight months of life it increases rapidly in size, and then gradually regresses over the next one to five years. In the uncomplicated lesion the best eventual result is achieved with no treatment at all. Observation alone is not possible,
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The involuting hemangioma, or strawberry birthmark, is small or absent at the time of birth. During the first six or eight months of life it increases rapidly in size, and then gradually regresses over the next one to five years. In the uncomplicated lesion the best eventual result is achieved with no treatment at all. Observation alone is not possible,
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International Journal of Foundations of Computer Science, 2007
In this paper we study a generalization of the classical notions of bordered and unbordered words, motivated by DNA computing. DNA strands can be viewed as finite strings over the alphabet {A, G, C, T}, and are used in DNA computing to encode information. Due to the fact that A is Watson-Crick complementary to T and G to C, DNA single strands that are
Lila Kari, Kalpana Mahalingam
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In this paper we study a generalization of the classical notions of bordered and unbordered words, motivated by DNA computing. DNA strands can be viewed as finite strings over the alphabet {A, G, C, T}, and are used in DNA computing to encode information. Due to the fact that A is Watson-Crick complementary to T and G to C, DNA single strands that are
Lila Kari, Kalpana Mahalingam
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The Mathematical Gazette, 1947
We prove some theorems on commutative involutions in a “real” projective geometry in which cobasal homographie ranges may have 0, 1 or 2 self-corresponding points (and therefore a conic and a general line in its plane have 0, 1 or 2 points of intersection).
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We prove some theorems on commutative involutions in a “real” projective geometry in which cobasal homographie ranges may have 0, 1 or 2 self-corresponding points (and therefore a conic and a general line in its plane have 0, 1 or 2 points of intersection).
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The Annals of Mathematics, 1957
1. R. H. Bing [1] has given an example of an involution of a 3-sphere whose fixed points constitute a wild (horned) 2-sphere. This shows that an involution in a euclidean n-sphere, SO, is not necessarily conjugate, in the group of homeomorphisms SO' -* S~', to an orthogonal transformation (cf. Problem 39 in [2]).
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1. R. H. Bing [1] has given an example of an involution of a 3-sphere whose fixed points constitute a wild (horned) 2-sphere. This shows that an involution in a euclidean n-sphere, SO, is not necessarily conjugate, in the group of homeomorphisms SO' -* S~', to an orthogonal transformation (cf. Problem 39 in [2]).
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Canadian Journal of Mathematics, 1974
In this note we prove some results which assert that under certain conditions the involution on a prime ring must satisfy a form of positive definiteness. As a consequence of the first of our theorems we obtain a fairly short and simple proof of a recent theorem of Lanski [3].
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In this note we prove some results which assert that under certain conditions the involution on a prime ring must satisfy a form of positive definiteness. As a consequence of the first of our theorems we obtain a fairly short and simple proof of a recent theorem of Lanski [3].
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2011
A square involution is a square permutation which is also an involution. The authors prove that the number of square involutions of length \(n\) is \[ (n+2)2^{n-3}-(n-2)\binom{n-3}{\lfloor \frac{n-3}{2}\rfloor},n\geq 3. \]
F. Disanto, FROSINI, ANDREA, S. Rinaldi
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A square involution is a square permutation which is also an involution. The authors prove that the number of square involutions of length \(n\) is \[ (n+2)2^{n-3}-(n-2)\binom{n-3}{\lfloor \frac{n-3}{2}\rfloor},n\geq 3. \]
F. Disanto, FROSINI, ANDREA, S. Rinaldi
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Programming and Computer Software, 2004
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zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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