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  2. Bill Gates - Wikipedia

    en.wikipedia.org/wiki/Bill_Gates

    In June 2018, Gates offered free ebooks, to all new graduates of U.S. colleges and universities, [162] and in 2021, offered free ebooks, to all college and university students around the world. [163] [164] The Bill And Melinda Gates Foundation partially funds OpenStax, which creates and provides free digital textbooks. [165]

  3. Geometry - Wikipedia

    en.wikipedia.org/wiki/Geometry

    Geometry (from Ancient Greek γεωμετρία (geōmetría) 'land measurement'; from γῆ (gê) 'earth, land' and μέτρον (métron) 'a measure') [ 1] is a branch of mathematics concerned with properties of space such as the distance, shape, size, and relative position of figures. [ 2] Geometry is, along with arithmetic, one of the ...

  4. Massive open online course - Wikipedia

    en.wikipedia.org/wiki/Massive_open_online_course

    A massive open online course ( MOOC / muːk /) or an open online course is an online course aimed at unlimited participation and open access via the Web. [ 1] In addition to traditional course materials, such as filmed lectures, readings, and problem sets, many MOOCs provide interactive courses with user forums or social media discussions to ...

  5. 4chan - Wikipedia

    en.wikipedia.org/wiki/4chan

    4chan Homepage on May 3, 2023 Type of site Imageboard Available in English Owner Hiroyuki Nishimura Created by Christopher Poole URL www.4chan.org Commercial Yes Registration None available (except for staff) Launched October 1, 2003 ; 20 years ago (2003-10-01) 4chan is an anonymous English-language imageboard website. Launched by Christopher "moot" Poole in October 2003, the site hosts boards ...

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    Explore our AOL Mail product page to learn even more. Start for free. Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  7. Matrix (mathematics) - Wikipedia

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

    Matrix (mathematics) An m × n matrix: the m rows are horizontal and the n columns are vertical. Each element of a matrix is often denoted by a variable with two subscripts. For example, a2,1 represents the element at the second row and first column of the matrix. In mathematics, a matrix ( pl.: matrices) is a rectangular array or table of ...

  8. Simon & Garfunkel - Wikipedia

    en.wikipedia.org/wiki/Simon_&_Garfunkel

    – Garfunkel describing his decades-long relationship with Simon By 1993, the relationship had thawed, and Simon invited Garfunkel on an international tour. Following a sold-out 21-date run at the Paramount Theater in New York and an appearance at that year's Bridge School Benefit in California, they toured the Far East. They became acrimonious again for the rest of the decade. Simon thanked ...

  9. PDF - Wikipedia

    en.wikipedia.org/wiki/PDF

    PDF graphics use a device-independent Cartesian coordinate system to describe the surface of a page. A PDF page description can use a matrix to scale, rotate, or skew graphical elements. A key concept in PDF is that of the graphics state, which is a collection of graphical parameters that may be changed, saved, and restored by a page ...

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