منابع مشابه
Casimir densities for wedge-shaped boundaries
The vacuum expectation values of the field squared and the energy-momentum tensor are investigated for a scalar field with Dirichlet boundary conditions and for the electromagnetic field inside a wedge with a coaxial cylindrical boundary. In the case of the electromagnetic field perfectly conducting boundary conditions are assumed on the bounding surfaces. By using the Abel-Plana-type formula f...
متن کاملPolyhedral Surfaces in Wedge Products
We introduce the wedge product of two polytopes. The wedge product is described in terms of inequality systems, in terms of vertex coordinates as well as purely combinatorially, from the corresponding data of its constituents. The wedge product construction can be described as an iterated “subdirect product” as introduced by McMullen (1976); it is dual to the “wreath product” construction of Jo...
متن کاملFabrication of Saddle-Shaped Surfaces by Flame Forming Process
The flame forming process is widely used to manufacture ship hull plates. The saddle-shaped surfaces have different curvatures in perpendicular angles of planes and the manufacturers face an anti-clastic curvature. In this article, the manufacturing of saddle-shaped surfaces utilizing the flame forming process is investigated. The spiral irradiating scheme is used for forming. In order to study...
متن کاملExcised larynx evaluation of wedge-shaped adjustable balloon implant for minimally invasive type I thyroplasty.
OBJECTIVES/HYPOTHESIS To describe the method of inserting a wedge-shaped adjustable balloon implant (wABI) via a minithyrotomy for medialization thyroplasty and evaluate its effect on a range of phonatory parameters using the excised larynx bench apparatus. STUDY DESIGN Repeated measures with each larynx serving as its own control. METHODS A prototype wABI was deployed in six excised canine...
متن کاملCharacteristic Angles in the Wetting of a Wedge-Shaped Region
The shape of a liquid surface bounded by an acute or obtuse wedge is considered by using classical analysis methods. For acute wedges the two principal curvatures are of the order of the (fixed) mean curvature. But for obtuse wedges, the principal curvatures both diverge as the vertex is approached. The power-law divergence becomes stronger with increasing opening angle. Possible implications o...
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ژورنال
عنوان ژورنال: Časopis pro pěstování matematiky
سال: 1955
ISSN: 0528-2195
DOI: 10.21136/cpm.1955.117148