# dualities

- duÂ·alÂ·iÂ·ty || djuË'Ã¦lÉ™tÉª n. dualism; duplicity; doubleness

*English contemporary dictionary.
2014.*

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**Duality (mathematics)**— In mathematics, a duality, generally speaking, translates concepts, theorems or mathematical structures into other concepts, theorems or structures, in a one to one fashion, often (but not always) by means of an involution operation: if the dual… … Wikipedia**M-theory**— For a generally accessible and less technical introduction to the topic, see Introduction to M theory. String theory … Wikipedia**Stone duality**— In mathematics, there is an ample supply of categorical dualities between certain categories of topological spaces and categories of partially ordered sets. Today, these dualities are usually collected under the label Stone duality, since they… … Wikipedia**String theory**— This article is about the branch of theoretical physics. For other uses, see String theory (disambiguation). String theory … Wikipedia**Topological string theory**— In theoretical physics, topological string theory is a simplified version of string theory. The operators in topological string theory represent the algebra of operators in the full string theory that preserve a certain amount of supersymmetry.… … Wikipedia**Duality (CoPs)**— This article is about Dualities in Communities of practice . For other uses of Duality, see Duality (disambiguation). In the context of a Community of practice the notion of a duality is used to capture the idea of the tension between two… … Wikipedia**Morita equivalence**— In abstract algebra, Morita equivalence is a relationship defined between rings that preserves many ring theoretic properties. It is named after Japanese mathematician Kiiti Morita who defined equivalence and a similar notion of duality in 1958.… … Wikipedia**Narrative art**— is art that tells a story, either as a moment in an ongoing story or as a sequence of events unfolding over time. Some of the earliest evidence of human art suggests that people told stories with pictures. However, without some knowledge of the… … Wikipedia**Linear programming**— (LP, or linear optimization) is a mathematical method for determining a way to achieve the best outcome (such as maximum profit or lowest cost) in a given mathematical model for some list of requirements represented as linear relationships.… … Wikipedia**De Morgan's laws**— In formal logic, De Morgan s laws are rules relating the logical operators and and or in terms of each other via negation. With two operands A and B: In another form: NOT (A AND B) = (NOT A) OR (NOT B) NOT (A OR B) = (NOT A) AND (NOT B) The rules … Wikipedia