考拉兹猜想
参考资料

↑  Maddux, Cleborne D.; Johnson, D. Lamont. . New York: Haworth Press. 1997: 160. ISBN 0-7890-0374-0. The problem is also known by several other names, including: Ulam's conjecture, the Hailstone problem, the Syracuse problem, Kakutani's problem, Hasse's algorithm, and the Collatz problem.
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↑  Lagarias (1985) section "A heuristic argument".
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↑  Hartnett, Kevin. . Quanta Magazine. 2019-12-11  [2023-11-12]. （原始内容存档于2024-01-16）.
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↑  Lagarias, Jeffrey. . Acta Arithmetica. 1990, 56 (1): 33–53  [2023-11-12]. ISSN 0065-1036. doi:10.4064/aa-56-1-33-53 . （原始内容存档于2023-03-27）.
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↑  Ben-Amram, Amir M. . Computability. 2015, 1 (1): 19–56. doi:10.3233/COM-150032.
↑  Kevin Hartnett. . Quantamagazine. 2019-12-11  [2019-12-16]. （原始内容存档于2020-06-18）.
↑  Terence Tao. . arXiv. 2019-09-13  [2019-12-16]. （原始内容存档于2021-04-17）.