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  2. PDF - Wikipedia

    en.wikipedia.org/wiki/PDF

    A PDF file is organized using ASCII characters, except for certain elements that may have binary content. The file starts with a header containing a magic number (as a readable string) and the version of the format, for example %PDF-1.7. The format is a subset of a COS ("Carousel" Object Structure) format. [23]

  3. Universal (metaphysics) - Wikipedia

    en.wikipedia.org/wiki/Universal_(metaphysics)

    A universal may have instances, known as its particulars. For example, the type dog (or doghood) is a universal, as are the property red (or redness) and the relation betweenness (or being between). Any particular dog, red thing, or object that is between other things is not a universal, however, but is an instance of a universal.

  4. Universal property - Wikipedia

    en.wikipedia.org/wiki/Universal_property

    Universal constructions are functorial in nature: if one can carry out the construction for every object in a category C then one obtains a functor on C. Furthermore, this functor is a right or left adjoint to the functor U used in the definition of the universal property. [2] Universal properties occur everywhere in mathematics.

  5. PDF/UA - Wikipedia

    en.wikipedia.org/wiki/PDF/UA

    PDF/UA (PDF/Universal Accessibility), [1] formally ISO 14289, is an International Organization for Standardization (ISO) standard for accessible PDF technology. A technical specification intended for developers implementing PDF writing and processing software, PDF/UA provides definitive terms and requirements for accessibility in PDF documents and applications. [2]

  6. Universality - Wikipedia

    en.wikipedia.org/wiki/Universality

    In law, as a synonym for universal jurisdiction; In moral philosophy, the first formulation of Kant's categorical imperative. Universality may also refer to several concepts that are also known as "universality" Background independence, a concept of universality in physical science; Turing-complete, a concept of universality in computation

  7. Universal Decimal Classification - Wikipedia

    en.wikipedia.org/wiki/Universal_Decimal...

    Universal decimal classification used at the library of the maison Losseau Bibliographic and library classification system The Universal Decimal Classification ( UDC ) is a bibliographic and library classification representing the systematic arrangement of all branches of human knowledge organized as a coherent system in which knowledge fields ...

  8. Uniform Resource Identifier - Wikipedia

    en.wikipedia.org/wiki/Uniform_Resource_Identifier

    A Uniform Resource Identifier (URI), formerly Universal Resource Identifier, is a unique sequence of characters that identifies an abstract or physical resource, [1] such as resources on a webpage, mail address, phone number, [2] books, real-world objects such as people and places, concepts. [3]

  9. Universal File Format - Wikipedia

    en.wikipedia.org/wiki/Universal_File_Format

    Download as PDF; Printable version; ... Universal File Format is a file format originally developed by the Structural Dynamics Research Corporation ...