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The equivalent counterpart of the Ishimori equation is the Davey-Stewartson equation. See also. Nonlinear Schrödinger equation; Heisenberg model (classical)
In logic and mathematics, statements and are said to be logically equivalent if they have the same truth value in every model. [1] The logical equivalence of p {\displaystyle p} and q {\displaystyle q} is sometimes expressed as p ≡ q {\displaystyle p\equiv q} , p :: q {\displaystyle p::q} , E p q {\displaystyle {\textsf {E}}pq} , or p q ...
A Roman wall painting showing the Egyptian goddess Isis (seated right) welcoming the Greek heroine Io to Egypt. Interpretatio graeca (Latin for 'Greek translation'), or "interpretation by means of Greek [models]", refers to the tendency of the ancient Greeks to identify foreign deities with their own gods.
The idea that there are specific marine counterparts to land creatures, [1] inherited from the writers on natural history in Antiquity, was firmly believed in Islam [2] and in Medieval Europe. It is exemplified by the creatures represented in the medieval animal encyclopedias called bestiaries , and in the parallels drawn in the moralising ...
Satyress is the female equivalent to satyrs. They are entirely an invention of post-Roman European artists, as the Greek satyrs were exclusively male and the closest there was to female counterparts were the nymphs , altogether different creatures who, however, were nature spirits or deities like the satyrs.
Tellumo or Tellurus, male counterpart of Tellus. Tempestas, a goddess of storms or sudden weather, usually plural as the Tempestates; Terra Mater or Tellus, goddess of the earth and land. The Greek equivalent is Gaea, mother of titans, consort of Caelus (Uranus). Terminus, the rustic god of boundaries. Tiberinus, river god; deity of the Tiber ...
In mathematics, equivalent definitions are used in two somewhat different ways. First, within a particular mathematical theory (for example, Euclidean geometry ), a notion (for example, ellipse or minimal surface ) may have more than one definition.
An equivalent (symbol: officially equiv; [1] unofficially but often Eq [2]) is the amount of a substance that reacts with (or is equivalent to) an arbitrary amount (typically one mole) of another substance in a given chemical reaction. It is an archaic quantity that was used in chemistry and the biological sciences (see Equivalent weight § In ...