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  2. Collatz conjecture - Wikipedia

    en.wikipedia.org/wiki/Collatz_conjecture

    The Collatz conjecture [a] ... b and c are non-negative integers, ... this inverse relation forms a tree except for the 1–2–4 loop ...

  3. Termination analysis - Wikipedia

    en.wikipedia.org/wiki/Termination_analysis

    For example, the following loop will, in theory, never stop. However, it may halt when executed on a physical machine due to arithmetic overflow: either leading to an exception or causing the counter to wrap to a negative value and enabling the loop condition to be fulfilled. i := 1 loop until i = 0 i := i + 1

  4. File:All Collatz sequences of a length inferior to 20.svg

    en.wikipedia.org/wiki/File:All_Collatz_sequences...

    Conjectura de Collatz; Usage on eu.wikipedia.org Collatzen aierua; Usage on fi.wikipedia.org Collatzin konjektuuri; Usage on fr.wikipedia.org Conjecture de Syracuse; Usage on hu.wikipedia.org Collatz-sejtés; Usage on ja.wikipedia.org コラッツの問題; Usage on www.wikidata.org Q837314; Usage on zh-yue.wikipedia.org User ...

  5. File:Collatz-graph-20-iterations.svg - Wikipedia

    en.wikipedia.org/wiki/File:Collatz-graph-20...

    English: This is a graph, generated in bottom-up fashion, of the orbits of all numbers under the Collatz map with an orbit length of 20 or less. Created with Graphviz, with the help of this Python program: # This python script generates a graph that shows 20 levels of the Collatz Conjecture.

  6. File:Collatz orbits of the all integers up to 1000.svg ...

    en.wikipedia.org/wiki/File:Collatz_orbits_of_the...

    The following other wikis use this file: Usage on ca.wikipedia.org Conjectura de Collatz; Usage on eu.wikipedia.org Collatzen aierua; Usage on fr.wikipedia.org

  7. 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.

  8. 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 ⇒Erdős–Woods conjecture, Fermat–Catalan conjecture Formulated by David Masser and Joseph Oesterlé. [1] Proof claimed in 2012 by Shinichi Mochizuki: n/a ...

  9. 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]