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A closed half-space is the union of an open half-space and the hyperplane that defines it. The open (closed) upper half-space is the half-space of all ( x1, x2, ..., xn) such that xn > 0 (≥ 0). The open (closed) lower half-space is defined similarly, by requiring that xn be negative (non-positive). A half-space may be specified by a linear ...
Whitespace character. A whitespace character is a character data element that represents white space when text is rendered for display by a computer . For example, a space character ( U+0020 SPACE, ASCII 32) represents blank space such as a word divider in a Western script . A printable character results in output when rendered, but a ...
Halfwidth and Fullwidth Forms. Halfwidth and Fullwidth Forms is the name of a Unicode block U+FF00–FFEF, provided so that older encodings containing both halfwidth and fullwidth characters can have lossless translation to/from Unicode. It is the second-to-last block of the Basic Multilingual Plane, followed only by the short Specials block at ...
Non-breaking space. In word processing and digital typesetting, a non-breaking space ( ), also called NBSP, required space, [1] hard space, or fixed space (in most typefaces, it is not of fixed width ), is a space character that prevents an automatic line break at its position. In some formats, including HTML, it also prevents consecutive ...
Block Elements is a Unicode block containing square block symbols of various fill and shading. Used along with block elements are box-drawing characters, shade characters, and terminal graphic characters. These can be used for filling regions of the screen and portraying drop shadows. Its block name in Unicode 1.0 was Blocks.
Poincaré half-plane model. In non-Euclidean geometry, the Poincaré half-plane model is the upper half-plane, denoted below as H , together with a metric, the Poincaré metric, that makes it a model of two-dimensional hyperbolic geometry . Equivalently the Poincaré half-plane model is sometimes described as a complex plane where the imaginary ...
In CJK (Chinese, Japanese, and Korean) computing, graphic characters are traditionally classed into fullwidth [a] and halfwidth [b] characters. Unlike monospaced fonts, a halfwidth character occupies half the width of a fullwidth character, hence the name. Halfwidth and Fullwidth Forms is also the name of a Unicode block U+FF00–FFEF, provided ...
Half-space may refer to: Half-space (geometry), either of the two parts into which a plane divides Euclidean space. (Poincaré) Half-space model, a model of hyperbolic geometry using a Euclidean half-space. Siegel upper half-space, a set of complex matrices with positive definite imaginary part. Half-space (punctuation), a spacing character ...