Complexes whose boundaries cannot be pushed around
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چکیده
منابع مشابه
Cohesin gets pushed around
Cohesin gets pushed around ings of cohesin hold together sister chromatids. Armelle and colleagues now suggest that cohesin rings get pushed to their final resting places by transcription complexes. Cohesins are known to bind a heterochromatin protein at centromeres, but previous reports of cohesin localization on chromosome arms were incomplete. The authors did a comprehensive survey of four b...
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The problem of establishing the number of perfect matchings necessary to cover the edge-set of a cubic bridgeless graph is strictly related to a famous conjecture of Berge and Fulkerson. In this paper we prove that deciding whether this number is at most 4 for a given cubic bridgeless graph is NP-complete. We also construct an infinite family F of snarks (cyclically 4-edge-connected cubic graph...
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Mental processes are abstracted from a subset of the physical universe ; these, in turn, lead to the world of ideas. Although these ideas include quantum logic, no credible way has yet been found that constructs machines which use superimposed possibilities in the style of quantum logic, more general in computing power to machines based on classical logic. Machine theories are based exclusively...
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When a marble rolls down a sloped surface it eventually oscillates about a low point. With friction, it finally comes to a rest at the low point. Electrons are pulled towards an atomic nucleus like the marble is pulled downhill towards a low point by gravity. There are no frictional forces on the electron, but an electron circling around a nucleus creates radiation and these electromagnetic wav...
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ژورنال
عنوان ژورنال: Discrete & Computational Geometry
سال: 1989
ISSN: 0179-5376,1432-0444
DOI: 10.1007/bf02187737