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  2. Collatz conjecture - Wikipedia

    en.wikipedia.org/wiki/Collatz_conjecture

    The Collatz conjecture [a] ... The conjecture has been shown to hold for all positive integers up to 2.95 × 10 20, but no general proof has been found.

  3. Conjecture - Wikipedia

    en.wikipedia.org/wiki/Conjecture

    In mathematics, a conjecture is a conclusion or a proposition that is proffered on a tentative basis without proof. [ 1 ] [ 2 ] [ 3 ] Some conjectures, such as the Riemann hypothesis or Fermat's conjecture (now a theorem , proven in 1995 by Andrew Wiles ), have shaped much of mathematical history as new areas of mathematics are developed in ...

  4. 10 Hard Math Problems That Even the Smartest People in the ...

    www.aol.com/10-hard-math-problems-even-150000090...

    The Collatz Conjecture. In September 2019, news broke regarding progress on this 82-year-old question, thanks to prolific mathematician Terence Tao. ... But we need proof for all natural numbers.

  5. List of conjectures - Wikipedia

    en.wikipedia.org/wiki/List_of_conjectures

    Conjecture Field Comments Eponym(s) Cites 1/3–2/3 conjecture: order theory: n/a: 70 abc conjecture: number theory: ⇔Granville–Langevin conjecture, Vojta's conjecture in dimension 1 ⇒ErdÅ‘s–Woods conjecture, Fermat–Catalan conjecture Formulated by David Masser and Joseph Oesterlé. [1] Proof claimed in 2012 by Shinichi Mochizuki: n/a ...

  6. Lothar Collatz - Wikipedia

    en.wikipedia.org/wiki/Lothar_Collatz

    Lothar Collatz (German:; July 6, 1910 – September 26, 1990) was a German mathematician, born in Arnsberg, Westphalia. The "3x + 1" problem is also known as the Collatz conjecture, named after him and still unsolved. The Collatz–Wielandt formula for the Perron–Frobenius eigenvalue of a positive square matrix was also named after him.

  7. Shizuo Kakutani - Wikipedia

    en.wikipedia.org/wiki/Shizuo_Kakutani

    The Collatz conjecture is also known as the Kakutani conjecture. Selected articles "A generalization of Brouwer's fixed point theorem." Duke Mathematical Journal ...

  8. Marijn Heule - Wikipedia

    en.wikipedia.org/wiki/Marijn_Heule

    [4] [6] He proved Keller's conjecture in dimension seven in 2020. [7] In 2018, Heule and Scott Aaronson received funding from the National Science Foundation to apply SAT solving to the Collatz conjecture. [7] In 2023 together with Subercaseaux, he proved that the packing chromatic number of the infinite square grid is 15 [8] [9]

  9. Witnesses describe moment American Airlines jet collided with ...

    www.aol.com/news/witnesses-describe-moment...

    Witnesses have revealed what they saw take place at the moment of impact during the horrifying collision between an American Airlines jet and an Army helicopter over the Potomac River.. On ...