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  2. Hilbert's fourth problem - Wikipedia

    en.wikipedia.org/wiki/Hilbert's_fourth_problem

    In mathematics, Hilbert's fourth problem in the 1900 list of Hilbert's problems is a foundational question in geometry.In one statement derived from the original, it was to find — up to an isomorphism — all geometries that have an axiomatic system of the classical geometry (Euclidean, hyperbolic and elliptic), with those axioms of congruence that involve the concept of the angle dropped ...

  3. Four fours - Wikipedia

    en.wikipedia.org/wiki/Four_fours

    For example, when d=4, the hash table for two occurrences of d would contain the key-value pair 8 and 4+4, and the one for three occurrences, the key-value pair 2 and (4+4)/4 (strings shown in bold). The task is then reduced to recursively computing these hash tables for increasing n , starting from n=1 and continuing up to e.g. n=4.

  4. 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.

  5. Oscars 2025: The Ultimate Party Guide With Beyoncé, Jay-Z ...

    www.aol.com/oscars-2025-ultimate-party-guide...

    4 p.m. Governors Ball. The Academy’s official after-party. Menu by Wolfgang Puck Catering with drinks by Tequila Don Julio, Clarendelle & Domaine Clarence Dillon wines and Champagne Lallier.

  6. Snowfall tracker: See how much snow fell near you - AOL

    www.aol.com/news/snowfall-tracker-see-much-snow...

    February 4, 2025 at 5:09 AM. Wondering how much snow has fallen near you? USA TODAY's detailed map lets you explore snowfall accumulation over the past 24, 48, and 72 hours. You can also check ...

  7. US, Colombia reach deal on deportations; tariffs, sanctions ...

    www.aol.com/news/colombias-petro-not-allow-us...

    WASHINGTON/BOGOTA (Reuters) -The U.S. and Colombia pulled back from the brink of a trade war on Sunday after the White House said the South American nation had agreed to accept military aircraft ...

  8. Mathematical problem - Wikipedia

    en.wikipedia.org/wiki/Mathematical_problem

    A mathematical problem is a problem that can be represented, analyzed, and possibly solved, with the methods of mathematics.This can be a real-world problem, such as computing the orbits of the planets in the solar system, or a problem of a more abstract nature, such as Hilbert's problems.

  9. Lung cancer rising among non-smokers — here's why - AOL

    www.aol.com/lung-cancer-rising-among-non...

    The most common form of lung cancer is primarily found in non-smokers, a new study reveals. Doctors react to the surprising driver of the disease and other risk factors.