A geometric reformulation of 4-dimensional surgery
نویسندگان
چکیده
منابع مشابه
Geometric Decompositions of 4-dimensional Bundle Spaces
We consider geometric decompositions of aspherical 4manifolds which fibre over 2-orbifolds. We show first that no such manifold admits infinitely many fibrations over hyperbolic base orbifolds. If E is Seifert fibred over a hyperbolic surface B and either B has at most one cone point of order 2 or the monodromy has image in SL(2,Z) then E it has a decomposition induced from a decomposition of B...
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deployable scissor type structures are composed of the so-called scissor-like elements (sles), which are connected to each other at an intermediate point through a pivotal connection and allow them to be folded into a compact bundle for storage or transport. several sles are connected to each other in order to form units with regular polygonal plan views. the sides and radii of the polygons are...
A geometric approach to the canonical reformulation of quantum mechanics
Abstract The measure of distinguishability between two neighboring preparations of a physical system by a measurement apparatus naturally defines the line element of the preparation space of the system. We point out that quantum mechanics can be derived from the invariance of this line element in the canonical formulation. The canonical formulation of quantum statistical mechanics is also discu...
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ژورنال
عنوان ژورنال: Topology and its Applications
سال: 1986
ISSN: 0166-8641
DOI: 10.1016/0166-8641(86)90054-4