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In mathematics, an adjunction space (or attaching space) is a common construction in topology where one topological space is attached or "glued" onto another. Specifically, let X and Y be topological spaces, and let A be a subspace of Y. Let f : A → X be a continuous map (called the attaching map). One forms the adjunction space X ∪ fY ...
Handle decomposition. In mathematics, a handle decomposition of an m - manifold M is a union where each is obtained from by the attaching of - handles. A handle decomposition is to a manifold what a CW-decomposition is to a topological space—in many regards the purpose of a handle decomposition is to have a language analogous to CW-complexes ...
A library book shelf in Hong Kong arranged using the Dewey classification. A library classification is a system used within a library to organize materials, including books, sound and video recordings, electronic materials, etc., both on shelves and in catalogs and indexes. Each item is typically assigned a call number, which identifies the ...
The elongated triangular orthobicupola can be constructed from a hexagonal prism by attaching two regular triangular cupolae onto its base, covering its hexagonal faces. [1] This construction process known as elongation, giving the resulting polyhedron has 8 equilateral triangles and 12 squares. [2] A convex polyhedron in which all faces are ...
Elongated square gyrobicupola. In geometry, the elongated square gyrobicupola is a polyhedron constructed by two square cupolas attaching onto the bases of octagonal prism, with one of them rotated. It was once mistakenly considered a rhombicuboctahedron by many mathematicians. It is not considered to be an Archimedean solid because it lacks a ...
An explosion on Wednesday rocked the California courthouse where Michael Jackson was tried and acquitted nearly 20 years ago, authorities said. Residents near the court in Santa Maria, about 150 ...
Construction. The elongated square bipyramid is a composite, since it can constructed by attaching two equilateral square pyramids onto the faces of a cube that are opposite each other, a process known as elongation. [1][2] This construction involves the removal of those two squares and replacing them with those pyramids, resulting in eight ...
Three-point locking, or a multipoint lock, is a locking system installed in cabinet or locker doors to enable more secure locking. Whereas in single-point locking, the door on a cabinet locks only at the point where the key is turned, halfway up the edge of the door, three-point locking enables the top and bottom of the door to be ...