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  2. Algebra of sets - Wikipedia

    en.wikipedia.org/wiki/Algebra_of_sets

    It is the algebra of the set-theoretic operations of union, intersection and complementation, and the relations of equality and inclusion. For a basic introduction to sets see the article on sets, for a fuller account see naive set theory, and for a full rigorous axiomatic treatment see axiomatic set theory.

  3. Denver Union Station - Wikipedia

    en.wikipedia.org/wiki/Denver_Union_Station

    Denver Union Station is the main railway station and central transportation hub in Denver, Colorado. It is located at 17th and Wynkoop Streets in the present-day LoDo district and includes the historic station house, a modern open-air train shed, a 22-gate underground bus station, and light rail station. [4][5] A station was first opened on the ...

  4. Downtown Denver - Wikipedia

    en.wikipedia.org/wiki/Downtown_Denver

    Downtown Denver is the main financial, commercial, business, and entertainment district in Denver, Colorado, United States. There is over 23 million square feet (2,100,000 m 2) of office space in downtown Denver, with 132,000 workers. [ 1 ] The downtown area consists mostly of the neighborhoods of Union Station and Central Business District.

  5. Five Points, Denver - Wikipedia

    en.wikipedia.org/wiki/Five_Points,_Denver

    Stages are set up along Welton street, both inside the various music venues and on the street itself. [15] Five Points Jazz Festival. Presented by Denver Arts & Venues, the Five Points Jazz Festival is a free, all-day event held annually in Denver’s historic Five Points neighborhood. Once known as the Harlem of the West, Five Points was home ...

  6. Union (set theory) - Wikipedia

    en.wikipedia.org/wiki/Union_(set_theory)

    In set theory, the union (denoted by ∪) of a collection of sets is the set of all elements in the collection. [ 1 ] It is one of the fundamental operations through which sets can be combined and related to each other. A nullary union refers to a union of zero (⁠ ⁠) sets and it is by definition equal to the empty set.

  7. Dana Hudkins Crawford - Wikipedia

    en.wikipedia.org/wiki/Dana_Hudkins_Crawford

    Dana Hudkins Crawford. Dana Hudkins Crawford (born July 22, 1931) is an American architectural conservation developer and preservationist working in Denver, Colorado. She has been involved in almost every renovation project in downtown Denver, from the initial designation of the LoDo District and creation of Larimer Square to the Union Station.

  8. Set theory - Wikipedia

    en.wikipedia.org/wiki/Set_theory

    Set theory is the branch of mathematical logic that studies sets, which can be informally described as collections of objects.Although objects of any kind can be collected into a set, set theory — as a branch of mathematics — is mostly concerned with those that are relevant to mathematics as a whole.

  9. City will redevelop downtown Union Station as Amtrak shows ...

    www.aol.com/city-redevelop-downtown-union...

    The city will sell the former Claeys Candy building at 525 S. Taylor St. to Smith for $1,000 so that he can vacate Union Station and free up the area needed for rail right-of-way. Smith plans to ...