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  2. Intelligent Mail barcode - Wikipedia

    en.wikipedia.org/wiki/Intelligent_Mail_barcode

    A possible Intelligent Mail Barcode for the Wikimedia Foundation address. The Intelligent Mail Barcode (IMb) is a 65-bar barcode for use on mail in the United States. [1] The term "Intelligent Mail" refers to services offered by the United States Postal Service for domestic mail delivery.

  3. Injective hull - Wikipedia

    en.wikipedia.org/wiki/Injective_hull

    In mathematics, particularly in algebra, the injective hull (or injective envelope) of a module is both the smallest injective module containing it and the largest essential extension of it. Injective hulls were first described in ( Eckmann & Schopf 1953 ).

  4. Envelope - Wikipedia

    en.wikipedia.org/wiki/Envelope

    An envelope is a common packaging item, usually made of thin, flat material. It is designed to contain a flat object, such as a letter or card. Traditional envelopes are made from sheets of paper cut to one of three shapes: a rhombus, a short-arm cross or a kite. These shapes allow the envelope structure to be made by folding the sheet sides ...

  5. Convex hull - Wikipedia

    en.wikipedia.org/wiki/Convex_hull

    In geometry, the convex hull, convex envelope or convex closure [1] of a shape is the smallest convex set that contains it. The convex hull may be defined either as the intersection of all convex sets containing a given subset of a Euclidean space , or equivalently as the set of all convex combinations of points in the subset.

  6. Redesigned envelope leads to fewer rejected ballots, but new ...

    www.aol.com/redesigned-envelope-leads-fewer...

    Compared with the 2023 primary, counties rejected 9.6% fewer ballots for the kinds of errors that the redesign sought to address: a missing date or signature on the return envelope, an incorrect ...

  7. Projective cover - Wikipedia

    en.wikipedia.org/wiki/Projective_cover

    The injective envelope for a module always exists, however over certain rings modules may not have projective covers. For example, the natural map from Z onto Z /2 Z is not a projective cover of the Z -module Z /2 Z (which in fact has no projective cover).

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