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  2. Minuteman Project - Wikipedia

    en.wikipedia.org/wiki/Minuteman_Project

    On April 6, 2005, three Minuteman Project volunteers convinced a 25-year-old immigrant to hold a T-shirt and pose for a photograph and a video with one of the volunteers. . The T‑shirt, which was also worn by volunteer Bryan Barton, read "Bryan Barton caught me crossing the border and all I got was this lousy T-shir

  3. Closed-ended question - Wikipedia

    en.wikipedia.org/wiki/Closed-ended_question

    It is often argued that open-ended questions (i.e. questions that elicit more than a yes/no answers) are preferable because they open up discussion and enquiry. Peter Worley argues that this is a false assumption. This is based on Worley's central arguments that there are two different kinds of open and closed questions: grammatical and conceptual.

  4. Hilbert's problems - Wikipedia

    en.wikipedia.org/wiki/Hilbert's_problems

    Also, the 4th problem concerns the foundations of geometry, in a manner that is now generally judged to be too vague to enable a definitive answer. The 23rd problem was purposefully set as a general indication by Hilbert to highlight the calculus of variations as an underappreciated and understudied field.

  5. Open Borders: the Science and Ethics of Immigration

    en.wikipedia.org/wiki/Open_Borders:_the_Science...

    The book presents economic and ethical arguments for open borders between countries in a graphic novel format. It suggests that the economic benefits of open borders outweigh the potential downsides. It also rebuts common arguments against immigration such as the economic impact on low-skill native workers and the cultural changes it causes. [1]

  6. Mathcounts - Wikipedia

    en.wikipedia.org/wiki/Mathcounts

    The Mathcounts Competition Series spread quickly in middle schools, and today it is the best-known middle school mathematics competition. [5] In 2007, Mathcounts launched the National Math Club as a noncompetitive alternative to the Competition Series. In 2011, Mathcounts launched the Math Video Challenge Program, which was discontinued in 2023 ...

  7. List of national border changes (1914–present) - Wikipedia

    en.wikipedia.org/wiki/List_of_national_border...

    The border has been straightened out and now runs down the centre of the Meuse River. [35] The change took effect on 1 January 2018. Regions of Ukraine annexed by Russia since 2014 ( Crimea ) and 2022 ( Donetsk , Kherson , Luhansk and Zaporizhzhia ), with a red line marking the area of actual control by Russia on 30 September 2022.

  8. Closeness (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Closeness_(mathematics)

    Closeness is a basic concept in topology and related areas in mathematics.Intuitively, we say two sets are close if they are arbitrarily near to each other. The concept can be defined naturally in a metric space where a notion of distance between elements of the space is defined, but it can be generalized to topological spaces where we have no concrete way to measure distances.

  9. Book club - Wikipedia

    en.wikipedia.org/wiki/Book_club

    Book club may refer to: Book discussion club, a group of people who meet to discuss a book or books that they have read Literature circle, a group of students who meet in a classroom to discuss a book or books that they have read; Book sales club, a subscription-based method of selling and purchasing books