منابع مشابه
Projective planes and their look-alikes
A straight-forward application of Poincaré duality shows that for such a manifold there exists a number m ≥ 2 such that Hk(M) = Z, for k = 0,m, 2m; in particular, dim(M) = 2m is even. It follows from Adams’ Theorem on the Hopf invariant that m divides 8. We construct a family of topological 2m-manifolds M(ξ) which are Thom spaces of certain topological Rm-bundles (open disk bundles) ξ over the ...
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Obesity is a common finding in our general population, the proportion of obese individuals having increased at an alarming rate all over the world in the past 20 years. Compared to growth failure, obesity is rare in a population of individuals with a genetic syndrome. One database for genetic syndromes, Online Mendelian Inheritance in Man, contains 169 matches for obesity and 421 matches for gr...
متن کاملDistinguishing between Sketched Scribble Look Alikes
In hand-sketched drawings, nearly identical strokes may have different meanings to a user. For instance, a scribble could signify either that a shape should be filled in or that it should be deleted. This work describes a method for determining user intention in drawing scribbles in the context of a pen-based computer sketch. Our study shows that given two strokes, a circle and a scribble, two ...
متن کامل2 00 3 Projective planes and their look - alikes
A straight-forward application of Poincaré duality shows that for such a manifold there exists a number m ≥ 2 such that Hk(M) = Z, for k = 0,m, 2m; in particular, dim(M) = 2m is even. It follows from Adams’ Theorem on the Hopf invariant that m divides 8. We construct a family of topological 2m-manifolds M(ξ) which are Thom spaces of certain topological Rm-bundles (open disk bundles) ξ over the ...
متن کاملEpiploic appendagitis: an entity frequently unknown to clinicians--diagnostic imaging, pitfalls, and look-alikes.
OBJECTIVE Epiploic appendagitis is an ischemic infarction of an epiploic appendage caused by torsion or spontaneous thrombosis of the epiploic appendage central draining vein. When it occurs on the right side of the abdomen, it can mimic appendicitis and right-sided diverticulitis; whereas when it occurs on the left side of the abdomen, it is often mistaken for sigmoid diverticulitis. The purpo...
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ژورنال
عنوان ژورنال: Cortex
سال: 2016
ISSN: 0010-9452
DOI: 10.1016/j.cortex.2016.02.012