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  2. Title 42 of the United States Code - Wikipedia

    en.wikipedia.org/wiki/Title_42_of_the_United...

    Title 1 - General Provisions; Title 2 - The Congress; Title 3 - The President; Title 4 - Flag and Seal, Seat of Government, and the States; Title 5 - Government Organization and Employees

  3. Glossary of mathematical symbols - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_mathematical...

    ± (plus–minus sign) 1. Denotes either a plus sign or a minus sign. 2. Denotes the range of values that a measured quantity may have; for example, 10 ± 2 denotes an unknown value that lies between 8 and 12. ∓ (minus-plus sign) Used paired with ±, denotes the opposite sign; that is, + if ± is –, and – if ± is +.

  4. Commission (document) - Wikipedia

    en.wikipedia.org/wiki/Commission_(document)

    A commission is a formal document issued to appoint a named person to high office or as a commissioned officer in a territory's armed forces. A commission constitutes documentary authority that the person named is vested with the powers of that office and is empowered to execute official acts. [1]

  5. Convention on International Civil Aviation - Wikipedia

    en.wikipedia.org/wiki/Convention_on...

    The document was signed on December 7, 1944, in Chicago by 52 signatory states. [3] It received the requisite 26th ratification on March 5, 1947, and went into effect on April 4, 1947, the same date that ICAO came into being.

  6. At sign - Wikipedia

    en.wikipedia.org/wiki/At_sign

    The at sign, @, is an accounting and invoice abbreviation meaning "at a rate of" (e.g. 7 widgets @ £2 per widget = £14), [1] now seen more widely in email addresses and social media platform handles. It is normally read aloud as "at" and is also commonly called the at symbol, commercial at, or address sign.

  7. Company seal - Wikipedia

    en.wikipedia.org/wiki/Company_seal

    Traditionally, the seal was of some legal significance because the affixing of the seal signified that the document was the act and deed of the company, whereas when a document was merely signed by a director, then that was deemed to be an act carried out on behalf of the company by its agents, which was subject to applicable restrictions and ...

  8. Plus–minus sign - Wikipedia

    en.wikipedia.org/wiki/Plus–minus_sign

    The minus–plus sign, ∓, is generally used in conjunction with the ± sign, in such expressions as x ± y ∓ z, which can be interpreted as meaning x + y − z or x − y + z (but not x + y + z or x − y − z). The ∓ always has the opposite sign to ±.

  9. North Atlantic Treaty - Wikipedia

    en.wikipedia.org/wiki/North_Atlantic_Treaty

    The following twelve states signed the treaty and thus became the founding members of NATO. The following leaders signed the agreement as plenipotentiaries of their countries in Washington, D.C., on 4 April 1949: [7] [8] Belgium – Prime Minister and Foreign Minister Paul-Henri Spaak and Ambassador Baron Robert Silvercruys