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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 word cross is recorded in 11th-century Old English as cros, exclusively for the instrument of Christ's crucifixion, replacing the native Old English word rood.The word's history is complicated; it appears to have entered English from Old Irish, possibly via Old Norse, ultimately from the Latin crux (or its accusative crucem and its genitive crucis), "stake, cross".
The format of an email address is local-part@domain, where the local-part may be up to 64 octets long and the domain may have a maximum of 255 octets. [5] The formal definitions are in RFC 5322 (sections 3.2.3 and 3.4.1) and RFC 5321—with a more readable form given in the informational RFC 3696 (written by J. Klensin, the author of RFC 5321) and the associated errata.
Recycling symbol. Recycling codes; Japanese recycling symbols; Green Dot (symbol) Laundry symbol; Period-after-opening symbol (on cosmetics as 6M, 12M, 18M, etc.) U+2602 ☂ UMBRELLA - keep dry; U+2614 ☔ UMBRELLA WITH RAIN DROPS - keep dry; Japanese postal mark ℮, the European estimated sign U+212E; Inventory tracking symbols Barcode such ...
Example of true position geometric control defined by basic dimensions and datum features. Geometric dimensioning and tolerancing (GD&T) is a system for defining and communicating engineering tolerances via a symbolic language on engineering drawings and computer-generated 3D models that describes a physical object's nominal geometry and the permissible variation thereof.
This is because a negative number multiplied by another negative number cancels the sign, and thus gives a positive number. If n is an odd integer, then (−1) n = −1. This is because there will be a remaining −1 after removing −1 pairs. Because of this, powers of −1 are useful for expressing alternating sequences.
One of the oldest of these symbols is the downward-pointing pink triangle that male homosexuals, male bisexuals, and transgender women in Nazi concentration camps were required to wear on their clothing. The badge is one of several badges that internees wore to identify what kind of prisoners they were. [55]
Gender symbols on a public toilet in Switzerland. A gender symbol is a pictogram or glyph used to represent sex and gender, for example in biology and medicine, in genealogy, or in the sociological fields of gender politics, LGBT subculture and identity politics.