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  2. Euro sign - Wikipedia

    en.wikipedia.org/wiki/Euro_sign

    The euro sign ( €) is the currency sign used for the euro, the official currency of the eurozone and adopted, although not required to, by Kosovo and Montenegro. The design was presented to the public by the European Commission on 12 December 1996. It consists of a stylized letter E (or epsilon ), crossed by two lines instead of one.

  3. Single sign-on - Wikipedia

    en.wikipedia.org/wiki/Single_sign-on

    Conversely, single sign-off or single log-out (SLO) is the property whereby a single action of signing out terminates access to multiple software systems. As different applications and resources support different authentication mechanisms, single sign-on must internally store the credentials used for initial authentication and translate them to ...

  4. Intersection form of a 4-manifold - Wikipedia

    en.wikipedia.org/wiki/Intersection_form_of_a_4...

    In fact, Rokhlin's theorem implies that a smooth compact spin 4-manifold has signature a multiple of 16. Michael Freedman used the intersection form to classify simply-connected topological 4-manifolds. Given any unimodular symmetric bilinear form over the integers, Q, there is a simply-connected closed 4-manifold M with intersection form Q.

  5. SIMPLE algorithm - Wikipedia

    en.wikipedia.org/wiki/SIMPLE_algorithm

    SIMPLE is an acronym for Semi-Implicit Method for Pressure Linked Equations. The SIMPLE algorithm was developed by Prof. Brian Spalding and his student Suhas Patankar at Imperial College, London in the early 1970s. Since then it has been extensively used by many researchers to solve different kinds of fluid flow and heat transfer problems.

  6. Simple machine - Wikipedia

    en.wikipedia.org/wiki/Simple_machine

    Simple machine. The six classical simple machines. A simple machine is a mechanical device that changes the direction or magnitude of a force. [1] In general, they can be defined as the simplest mechanisms that use mechanical advantage (also called leverage) to multiply force. [2] Usually the term refers to the six classical simple machines ...

  7. Pi - Wikipedia

    en.wikipedia.org/wiki/Pi

    which is a kind of modular form called a Jacobi form. This is sometimes written in terms of the nome q = e π i τ {\displaystyle q=e^{\pi i\tau }} . The constant π is the unique constant making the Jacobi theta function an automorphic form , which means that it transforms in a specific way.

  8. PHP Standard Recommendation - Wikipedia

    en.wikipedia.org/wiki/PHP_Standard_Recommendation

    The PHP Standard Recommendation ( PSR) is a PHP specification published by the PHP Framework Interop Group. Similar to Java Specification Request for Java, it serves the standardization of programming concepts in PHP. The aim is to enable interoperability of components and to provide a common technical basis for implementation of proven ...

  9. Simple Authentication and Security Layer - Wikipedia

    en.wikipedia.org/wiki/Simple_Authentication_and...

    Simple Authentication and Security Layer ( SASL) is a framework for authentication and data security in Internet protocols. It decouples authentication mechanisms from application protocols, in theory allowing any authentication mechanism supported by SASL to be used in any application protocol that uses SASL. Authentication mechanisms can also ...