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  2. Collatz conjecture - Wikipedia

    en.wikipedia.org/wiki/Collatz_conjecture

    Paul Erdős said about the Collatz conjecture: "Mathematics may not be ready for such problems." [7] Jeffrey Lagarias stated in 2010 that the Collatz conjecture "is an extraordinarily difficult problem, completely out of reach of present day mathematics". [8]

  3. List of unsolved problems in mathematics - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    Many mathematical problems have been stated but not yet solved. These problems come from many areas of mathematics, such as theoretical physics, computer science, algebra, analysis, combinatorics, algebraic, differential, discrete and Euclidean geometries, graph theory, group theory, model theory, number theory, set theory, Ramsey theory, dynamical systems, and partial differential equations.

  4. Category:Unsolved problems in number theory - Wikipedia

    en.wikipedia.org/wiki/Category:Unsolved_problems...

    Schanuel's conjecture; Schinzel's hypothesis H; Scholz conjecture; Second Hardy–Littlewood conjecture; Serre's conjecture II; Sexy prime; Sierpiński number; Singmaster's conjecture; Safe and Sophie Germain primes; Stark conjectures; Sums of three cubes; Superperfect number; Supersingular prime (algebraic number theory) Szpiro's conjecture

  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. List of conjectures - Wikipedia

    en.wikipedia.org/wiki/List_of_conjectures

    The original problem posed by Kadison and Singer was not a conjecture: its authors believed it false. As reformulated, it became the "paving conjecture" for Euclidean spaces, and then a question on random polynomials, in which latter form it was solved affirmatively. 2015: Jean Bourgain, Ciprian Demeter, and Larry Guth

  7. The Möbius Mystery Has Stumped Mathematicians for 46 ... - AOL

    www.aol.com/lifestyle/m-bius-mystery-stumped...

    In a paper published on the preprint server arXiv, Schwartz solves the nearly 50-year-old mystery and finally proves the minimum size proposed by the original Halpern-Weaver conjecture—an aspect ...

  8. List of conjectures by Paul Erdős - Wikipedia

    en.wikipedia.org/wiki/List_of_conjectures_by_Paul...

    The Erdős–Turán conjecture on additive bases of natural numbers. A conjecture on quickly growing integer sequences with rational reciprocal series. A conjecture with Norman Oler [2] on circle packing in an equilateral triangle with a number of circles one less than a triangular number. The minimum overlap problem to estimate the limit of M(n).

  9. Pentagon claims to debunk famous ‘GOFAST’ UFO radar video ...

    www.aol.com/news/pentagon-claims-debunk-famous...

    The Pentagon announced they solved one of the most famous UFO videos that sparked a wave of national interest and speculation when it was first released in 2017. An official...