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  2. Diophantine equation - Wikipedia

    en.wikipedia.org/wiki/Diophantine_equation

    Diophantine problems have fewer equations than unknowns and involve finding integers that solve simultaneously all equations. As such systems of equations define algebraic curves , algebraic surfaces , or, more generally, algebraic sets , their study is a part of algebraic geometry that is called Diophantine geometry .

  3. List of unsolved problems in chemistry - Wikipedia

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

    Protein folding problem: Is it possible to predict the secondary, tertiary and quaternary structure of a polypeptide sequence based solely on the sequence and environmental information? Inverse protein-folding problem: Is it possible to design a polypeptide sequence which will adopt a given structure under certain environmental conditions?

  4. Extraneous and missing solutions - Wikipedia

    en.wikipedia.org/wiki/Extraneous_and_missing...

    Because of this, often, the only simple effective way to deal with multiplication by expressions involving variables is to substitute each of the solutions obtained into the original equation and confirm that this yields a valid equation. After discarding solutions that yield an invalid equation, we will have the correct set of solutions.

  5. Factorization - Wikipedia

    en.wikipedia.org/wiki/Factorization

    The polynomial x 2 + cx + d, where a + b = c and ab = d, can be factorized into (x + a)(x + b).. In mathematics, factorization (or factorisation, see English spelling differences) or factoring consists of writing a number or another mathematical object as a product of several factors, usually smaller or simpler objects of the same kind.

  6. Computational problem - Wikipedia

    en.wikipedia.org/wiki/Computational_problem

    For example, the problem of factoring "Given a positive integer n, find a nontrivial prime factor of n." is a computational problem that has a solution, as there are many known integer factorization algorithms. A computational problem can be viewed as a set of instances or cases together with a, possibly empty, set of solutions for every ...

  7. Obscure rule leads to Chargers getting 1st made fair catch ...

    www.aol.com/sports/obscure-rule-leads-chargers...

    "It's a fair catch free kick situation, we practice it," Broncos coach Payton told Amazon Prime Video coming off the field at the end of the first half. "He's got the leg. The penalty put them in ...

  8. What officials are doing – and suggesting – to learn more ...

    www.aol.com/officials-doing-suggesting-learn...

    As a flurry of possible drone sightings have triggered local politicians to press federal officials for more information, lawmakers have proposed a variety of different methods for dealing with ...

  9. How to Make Better Sandwiches, According to the Best ... - AOL

    www.aol.com/better-sandwiches-according-best...

    Rest your bread. One of the most popular sandwiches at Turkey and the Wolf in New Orleans is fried bologna made with “big toast” — thickly cut, toasted white bread.