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  2. Collatz conjecture - Wikipedia

    en.wikipedia.org/wiki/Collatz_conjecture

    The Collatz conjecture [a] ... Then the formula for the map is exactly the same as when the domain is the integers: an 'even' such rational is divided by 2; an 'odd ...

  3. 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.

  4. 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 ...

  5. 10 Hard Math Problems That Even the Smartest People in the ...

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

    Goldbach’s Conjecture. One of the greatest unsolved mysteries in math is also very easy to write. Goldbach’s Conjecture is, “Every even number (greater than two) is the sum of two primes ...

  6. Conjecture - Wikipedia

    en.wikipedia.org/wiki/Conjecture

    For instance, the Collatz conjecture, which concerns whether or not certain sequences of integers terminate, has been tested for all integers up to 1.2 × 10 12 (1.2 trillion). However, the failure to find a counterexample after extensive search does not constitute a proof that the conjecture is true—because the conjecture might be false but ...

  7. Riho Terras (mathematician) - Wikipedia

    en.wikipedia.org/wiki/Riho_Terras_(mathematician)

    He is known for the Terras theorem about the Collatz conjecture, published in 1976, [6] which proved that the conjecture holds for "almost all" numbers and established bounds for the conjecture. [7] [8] He married fellow mathematician Audrey Terras. [9]

  8. Index of combinatorics articles - Wikipedia

    en.wikipedia.org/wiki/Index_of_combinatorics...

    Collatz conjecture; Combination; Combinatorial design; Combinatorial number system; Combinatorial optimization; Combinatorial search; Constraint satisfaction problem; Conway's Game of Life; Cycles and fixed points; Cyclic order; Cyclic permutation; Cyclotomic identity

  9. List of number theory topics - Wikipedia

    en.wikipedia.org/wiki/List_of_number_theory_topics

    Goldbach's conjecture. Goldbach's weak conjecture; Second Hardy–Littlewood conjecture; Hardy–Littlewood circle method; Schinzel's hypothesis H; Bateman–Horn conjecture; Waring's problem. Brahmagupta–Fibonacci identity; Euler's four-square identity; Lagrange's four-square theorem; Taxicab number; Generalized taxicab number; Cabtaxi ...