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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. Module:Collatz sequence Generator - Wikipedia

    en.wikipedia.org/wiki/Module:Collatz_sequence...

    Download as PDF; Printable version; In other projects ... end-- Function to handle the Collatz logic and format sequence local ... % 2 == 0 and num / 2 or 3 * num + 1 ...

  4. Wikipedia:Reference desk/Archives/Mathematics/2009 October 2 ...

    en.wikipedia.org/wiki/Wikipedia:Reference_desk/...

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  5. 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.

  6. Template:Collatz sequence Generator/doc - Wikipedia

    en.wikipedia.org/wiki/Template:Collatz_sequence...

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  7. 3x + 1 semigroup - Wikipedia

    en.wikipedia.org/wiki/3x_+_1_semigroup

    The elements of a generating set of this semigroup are related to the sequence of numbers involved in the still open Collatz conjecture or the "3x + 1 problem". The 3x + 1 semigroup has been used to prove a weaker form of the Collatz conjecture. In fact, it was in such context the concept of the 3x + 1 semigroup was introduced by H. Farkas in ...

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

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

    # This python script generates a graph that shows 20 levels of the Collatz Conjecture. level = [1] # The root of the tree contains only "1" results = {} # This will hold the relationships for the graph # Loop 20 times for c in range(20): newlevel = set() # This will be the set of numbers in the level above us for x in level: # We now loop ...

  9. Talk:Collatz conjecture/Archive 3 - Wikipedia

    en.wikipedia.org/wiki/Talk:Collatz_conjecture/...

    Any number n, which leads with the Collatz-rules to the end loop 4-2-1, multiplied by 2x (x from 1 to ∞), will also lead to 4-2-1; the result will be even and you can either repeat this instruction or, if the result’s mod 6 = 4, you can subtract 1 and divide its result by 3 for a new number (which will be odd, thus, this instruction or ...