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In logic, a set of symbols is commonly used to express logical representation. The following table lists many common symbols, together with their name, how they should be read out loud, and the related field of mathematics.
25D0 25E0 25F0 Symbol Name Symbol Name Symbol Name Last Hex# HTML Hex HTML Hex HTML Hex Dec Picture Dec Picture Dec Picture CIRCLE WITH LEFT HALF BLACK
For most symbols, the entry name is the corresponding Unicode symbol. So, for searching the entry of a symbol, it suffices to type or copy the Unicode symbol into the search textbox. Similarly, when possible, the entry name of a symbol is also an anchor, which allows linking easily from another Wikipedia article. When an entry name contains ...
The Unicode Standard encodes almost all standard characters used in mathematics. [1] Unicode Technical Report #25 provides comprehensive information about the character repertoire, their properties, and guidelines for implementation. [1]
the first angle in a triangle, opposite the side a; the statistical significance of a result; the false positive rate in statistics ("Type I" error) the fine-structure constant in physics; the angle of attack of an aircraft; an alpha particle (He 2+) angular acceleration in physics; the linear thermal expansion coefficient; the thermal diffusivity
The nabla is a triangular symbol resembling an inverted Greek delta: [1] or ∇. The name comes, by reason of the symbol's shape, from the Hellenistic Greek word νάβλα for a Phoenician harp, [2] [3] and was suggested by the encyclopedist William Robertson Smith in an 1870 letter to Peter Guthrie Tait.
In its simplest form, an arrow is a triangle, chevron, or concave kite, usually affixed to a line segment or rectangle, [1] and in more complex forms a representation of an actual arrow (e.g. U+27B5). The direction indicated by an arrow is the one along the length of the line or rectangle toward the single pointed end.
Guillemets (/ ˈ ɡ ɪ l əm ɛ t /, [1] [2] also UK: / ˈ ɡ iː m eɪ /, [3] US: / ˌ ɡ iː (j) ə ˈ m eɪ, ˌ ɡ ɪ l ə ˈ m ɛ t /, [4] French:) are a pair of punctuation marks in the form of sideways double chevrons, « and », used as quotation marks in a number of languages.