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  2. History of PDF - Wikipedia

    en.wikipedia.org/wiki/History_of_PDF

    Documents containing Adobe extended features still carry the PDF base version number 1.7 but also contain an indication of which extension was followed during document creation. [21] PDF documents conforming to ISO 32000-2 carry the PDF version number 2.0, and are known to developers as "PDF 2.0 documents".

  3. PDF/A - Wikipedia

    en.wikipedia.org/wiki/PDF/A

    PDF is a standard for encoding documents in an "as printed" form that is portable between systems. However, the suitability of a PDF file for archival preservation depends on options chosen when the PDF is created: most notably, whether to embed the necessary fonts for rendering the document; whether to use encryption; and whether to preserve additional information from the original document ...

  4. Constitutional law of the United States - Wikipedia

    en.wikipedia.org/wiki/Constitutional_law_of_the...

    Early in its history, in Marbury v.Madison (1803) and Fletcher v. Peck (1810), the Supreme Court of the United States declared that the judicial power granted to it by Article III of the United States Constitution included the power of judicial review, to consider challenges to the constitutionality of a State or Federal law.

  5. Comparative Constitutions Project - Wikipedia

    en.wikipedia.org/wiki/Comparative_Constitutions...

    The Comparative Constitutions Project is an academic study of the content of the world's constitutions from 1789 to 2022, with yearly updates. The project was founded by Zachary Elkins and Tom Ginsburg in 2005 when they were colleagues at the University of Illinois and fellows at the Cline Center for Advanced Social Research. [1]

  6. PDF - Wikipedia

    en.wikipedia.org/wiki/PDF

    The Preview application can display PDF files, as can version 2.0 and later of the Safari web browser. System-level support for PDF allows macOS applications to create PDF documents automatically, provided they support the OS-standard printing architecture. The files are then exported in PDF 1.3 format according to the file header.

  7. Concatenated error correction code - Wikipedia

    en.wikipedia.org/wiki/Concatenated_error...

    This is a pictorial representation of a code concatenation, and, in particular, the Reed–Solomon code with n=q=4 and k=2 is used as the outer code and the Hadamard code with n=q and k=log q is used as the inner code. Overall, the concatenated code is a [, ⁡]-code.

  8. Constitutional documents - Wikipedia

    en.wikipedia.org/wiki/Constitutional_documents

    By convention, most common law jurisdictions divide the constitutional documents of companies into two separate documents: [1]. the Memorandum of Association (in some countries referred to as the Articles of Incorporation) is the primary document, and will generally regulate the company's activities with the outside world, such as the company's objects and powers.

  9. Error correction code - Wikipedia

    en.wikipedia.org/wiki/Error_correction_code

    The code-rate is hence a real number. A low code-rate close to zero implies a strong code that uses many redundant bits to achieve a good performance, while a large code-rate close to 1 implies a weak code. The redundant bits that protect the information have to be transferred using the same communication resources that they are trying to protect.