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  2. Collatz conjecture - Wikipedia

    en.wikipedia.org/wiki/Collatz_conjecture

    As an illustration of this, the parity cycle (1 1 0 0 1 1 0 0) and its sub-cycle (1 1 0 0) are associated to the same fraction ⁠ 5 / 7 ⁠ when reduced to lowest terms. In this context, assuming the validity of the Collatz conjecture implies that (1 0) and (0 1) are the only parity cycles generated by positive whole numbers (1 and 2 ...

  3. X-Plane (simulator) - Wikipedia

    en.wikipedia.org/wiki/X-Plane_(simulator)

    X-Plane is a flight simulation software initially launched by Laminar Research in 1995. Commercial desktop versions are sold for macOS, Windows, and Linux. In addition, Laminar Research also distributes FAA-certified versions for professional use. A mobile version has been available for Android, iOS, and webOS since 2009 as well.

  4. List of unsolved problems in mathematics - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    Many mathematical problems have been stated but not yet solved. These problems come from many areas of mathematics, such as theoretical physics, computer science, algebra, analysis, combinatorics, algebraic, differential, discrete and Euclidean geometries, graph theory, group theory, model theory, number theory, set theory, Ramsey theory, dynamical systems, and partial differential equations.

  5. I flew on JetBlue's brand-new Airbus A220 and saw why it's ...

    www.aol.com/flew-jetblues-brand-airbus-a220...

    JetBlue Airways is the latest US airline to fly the Airbus A220, a next-generation aircraft to replace the airline's Embraer E190s. The 140-seat aircraft is configured in a unique 2-3 arrangement ...

  6. Millennium Prize Problems - Wikipedia

    en.wikipedia.org/wiki/Millennium_Prize_Problems

    More specifically, the Millennium Prize version of the conjecture is that, if the elliptic curve E has rank r, then the L-function L(E, s) associated with it vanishes to order r at s = 1. Hilbert's tenth problem dealt with a more general type of equation, and in that case it was proven that there is no algorithmic way to decide whether a given ...

  7. Laminar Research - Wikipedia

    en.wikipedia.org/wiki/Laminar_Research

    Laminar Research is a small software company based in Columbia, South Carolina, and dedicated to providing software that accurately reflects the laws of physics. Laminar's flagship product is the flight simulator X-Plane. [1] The game works with Macintosh, Microsoft Windows, and Linux. They also have mobile versions for iPhone, iPad, and Android.

  8. Canadian investigators find black boxes after Toronto plane ...

    www.aol.com/news/canadian-investigators-black...

    Investigators from Canada's Transportation Safety Board are leading the probe to figure out why the CRJ900 aircraft operated by Delta Air Line's Endeavor Air subsidiary went belly up on Monday at ...

  9. List of Airbus A220 operators - Wikipedia

    en.wikipedia.org/wiki/List_of_Airbus_A220_operators

    As of February 2025, there are 396 A220 family aircraft in service with 20 commercial operators amongst other undisclosed operators. The five largest A220 operators are Delta Air Lines (75), airBaltic (50), JetBlue (44), Air France (41) and Breeze Airways (35).