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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.
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.
Segol (modern Hebrew: סֶגּוֹל, IPA:; formerly סְגוֹל , səḡôl) is a Hebrew niqqud vowel sign that is represented by three dots forming an upside down equilateral triangle "ֶ ". As such, it resembles an upside down therefore sign (a because sign ) underneath a letter.
An asterism, ⁂, is a typographic symbol consisting of three asterisks placed in a triangle. Its purpose is to "indicate minor breaks in text", to call attention to a passage, or to separate sub-chapters in a book. It is also used in meteorology to indicate 'moderate snowfall'.
WHITE DOWN-POINTING TRIANGLE (Nabla operator) ... Text of ISO 10646 - AMD 22 for PDAM registration and PDAM ballot, 1997-12-17: L2/98-320: N1898:
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]
An ancient symbol of a unicursal five-pointed star circumscribed by a circle with many meanings, including but not limited to, the five wounds of Christ and the five elements (earth, fire, water, air, and soul). In Satanism, it is flipped upside-down. See also: Sigil of Baphomet. Rose Cross
The block has 166 standardized variants defined to specify emoji-style (U+FE0F VS16) or text presentation (U+FE0E VS15) for the following 83 base characters: U+2600–U+2604, U+260E, U+2611, U+2614–U+2615, U+2618, U+261D, U+2620, U+2622–U+2623, U+2626, U+262A, U+262E–U+262F, U+2638–U+263A, U+2640, U+2642, U+2648–U+2653, U+265F–U+ ...