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  2. Prime-counting function - Wikipedia

    en.wikipedia.org/wiki/Prime-counting_function

    For x > 1 let π 0 (x) = π(x) − ⁠ 1 / 2 ⁠ when x is a prime number, and π 0 (x) = π(x) otherwise. Bernhard Riemann, in his work On the Number of Primes Less Than a Given Magnitude, proved that π 0 (x) is equal to [9] Riemann's explicit formula using the first 200 non-trivial zeros of the zeta function

  3. Windows 1.0 - Wikipedia

    en.wikipedia.org/wiki/Windows_1.0

    On November 20, 1985 (39 years ago) (), the first retail release, Windows 1.01, was released in the United States at a cost of US$99 (equivalent to about $289.00 in 2024). [ 16 ] [ 17 ] In May 1986, the next release, 1.02, was published mainly for the European market, also introducing non-English versions of Windows 1.0.

  4. Chi-squared distribution - Wikipedia

    en.wikipedia.org/wiki/Chi-squared_distribution

    Download as PDF; Printable version; In other projects ... each divided by their respective degrees of freedom. ... 2.20 3.36 4.88 5.99 7.78 9.49 13.28 18.47 5

  5. Chargaff's rules - Wikipedia

    en.wikipedia.org/wiki/Chargaff's_rules

    It does not apply to organellar genomes (mitochondria and plastids) smaller than ~20–30 kbp, nor does it apply to single stranded DNA (viral) genomes or any type of RNA genome. The basis for this rule is still under investigation, although genome size may play a role. Histogram showing how 20309 chromosomes adhere to Chargaff's second parity rule

  6. Prime number theorem - Wikipedia

    en.wikipedia.org/wiki/Prime_number_theorem

    The phenomenon that π 4,3 (x) is ahead most of the time is called Chebyshev's bias. The prime number race generalizes to other moduli and is the subject of much research; Pál Turán asked whether it is always the case that π c,a (x) and π c,b (x) change places when a and b are coprime to c. [34] Granville and Martin give a thorough ...

  7. Software versioning - Wikipedia

    en.wikipedia.org/wiki/Software_versioning

    As a result, all versions of OS X began with the number 10. The first major release of OS X was given the version number 10.0, but the next major release was not 11.0. Instead, it was numbered 10.1, followed by 10.2, 10.3, and so on for each subsequent major release. Thus the 11th major version of OS X was labeled "10.10".

  8. July 1932 German federal election - Wikipedia

    en.wikipedia.org/wiki/July_1932_German_federal...

    The government started to implement openly authoritarian measures: on 20 July 1932, the SPD-led coalition government in Prussia was overthrown in an illegal coup that placed the region under the direct control of the cabinet through a presidential decree, further weakening Weimar democracy. [19]

  9. Basketball court - Wikipedia

    en.wikipedia.org/wiki/Basketball_court

    This rule went into effect for the 2008–2009 season. The three-point line for women (NCAA) moved back one foot to 20.75 feet at the start of the 2011–12 season. During the 2019 offseason, the NCAA men's playing rules committee adopted the FIBA arc in a two-phase implementation, with Division I adopting the new arc in 2019–20 and other ...