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  2. Power of two - Wikipedia

    en.wikipedia.org/wiki/Power_of_two

    The only known powers of 2 with all digits even are 2 1 = 2, 2 2 = 4, 2 3 = 8, 2 6 = 64 and 2 11 = 2048. [12] The first 3 powers of 2 with all but last digit odd is 2 4 = 16, 2 5 = 32 and 2 9 = 512. The next such power of 2 of form 2 n should have n of at least 6 digits.

  3. QR code - Wikipedia

    en.wikipedia.org/wiki/QR_Code

    The generator polynomial specified for the (26,19,2) code, is: = + + + + + + +, which may also be written in the form of a matrix of decimal coefficients: [1 127 122 154 164 11 68 117] The 17-byte long message "www.wikipedia.org" as hexadecimal coefficients (ASCII values), denoted by M1 through M17 is:

  4. Dark energy - Wikipedia

    en.wikipedia.org/wiki/Dark_energy

    The simplest explanation for dark energy is that it is an intrinsic, fundamental energy of space. This is the cosmological constant, usually represented by the Greek letter Λ (Lambda, hence the name Lambda-CDM model ).

  5. Napier's bones - Wikipedia

    en.wikipedia.org/wiki/Napier's_bones

    The left-most column, preceding the bones shown coloured, may represent the 1 bone. (A blank space or zero to the upper left of each digit, separated by a diagonal line, should be understood, since 1 × 1 = 01, 1 × 2 = 02, 1 x 3 = 03, etc.) A small number is chosen, usually 2 through 9, by which to multiply the large number.

  6. Isaac Asimov - Wikipedia

    en.wikipedia.org/wiki/Isaac_Asimov

    Isaac Asimov (/ ˈ æ z ɪ m ɒ v / AZ-im-ov; [b] [c] c. January 2, 1920 [a] – April 6, 1992) was an American writer and professor of biochemistry at Boston University.During his lifetime, Asimov was considered one of the "Big Three" science fiction writers, along with Robert A. Heinlein and Arthur C. Clarke. [2]

  7. Python (programming language) - Wikipedia

    en.wikipedia.org/wiki/Python_(programming_language)

    [52] [53] While Python 2.7 and older versions are officially unsupported, a different unofficial Python implementation, PyPy, continues to support Python 2, i.e. "2.7.18+" (plus 3.10), with the plus meaning (at least some) "backported security updates". [54] Python 3.0 was released on 3 December 2008, with some new semantics and changed syntax.

  8. Public library advocacy - Wikipedia

    en.wikipedia.org/wiki/Public_library_advocacy

    The simplest one is when supporters of a library simply meet en masse and read their own books. Usually this type of read-in is held at or near the supported library or the targeted legislative body. Indianapolis library lovers organized a read-in during July 2010 to protest drastic budget cuts that would have closed 6 branches. [24]

  9. Prayagraj - Wikipedia

    en.wikipedia.org/wiki/Prayagraj

    Prayagraj (/ ˈ p r eɪ ə ˌ ɡ r ɑː dʒ, ˈ p r aɪ ə-/; ISO: Prayāgarāja), formerly Allahabad, is a metropolis in the Indian state of Uttar Pradesh. [8] [9] It is the administrative headquarters of the Prayagraj district, the most populous district in the state and 13th most populous district in India and the Prayagraj division.