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  2. Sum and Product Puzzle - Wikipedia

    en.wikipedia.org/wiki/Sum_and_Product_Puzzle

    The solution has X and Y as 4 and 13, with P initially knowing the product is 52 and S knowing the sum is 17. Initially P does not know the solution, since 52 = 4 × 13 = 2 × 26. and S knows that P does not know the solution since all the possible sums to 17 within the constraints produce similarly ambiguous products.

  3. Extensionality - Wikipedia

    en.wikipedia.org/wiki/Extensionality

    Consider the two functions f and g mapping from and to natural numbers, defined as follows: To find f(n), first add 5 to n, then multiply by 2. To find g(n), first multiply n by 2, then add 10. These functions are extensionally equal; given the same input, both functions always produce the same value.

  4. Kleene's recursion theorem - Wikipedia

    en.wikipedia.org/wiki/Kleene's_recursion_theorem

    The statement of the theorems refers to an admissible numbering of the partial recursive functions, such that the function corresponding to index is .. If and are partial functions on the natural numbers, the notation indicates that, for each n, either () and () are both defined and are equal, or else () and () are both undefined.

  5. Equaliser (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Equaliser_(mathematics)

    A binary equaliser (that is, an equaliser of just two functions) is also called a difference kernel.This may also be denoted DiffKer(f, g), Ker(f, g), or Ker(f − g).The last notation shows where this terminology comes from, and why it is most common in the context of abstract algebra: The difference kernel of f and g is simply the kernel of the difference f − g.

  6. Indeterminate form - Wikipedia

    en.wikipedia.org/wiki/Indeterminate_form

    Indeterminate form is a mathematical expression that can obtain any value depending on circumstances. In calculus, it is usually possible to compute the limit of the sum, difference, product, quotient or power of two functions by taking the corresponding combination of the separate limits of each respective function.

  7. Your guide to Proposition 5: Making it easier to pass local ...

    www.aol.com/news/guide-proposition-5-making...

    Proposition 5 will lower the voter threshold required to pass local affordable housing and transportation bond measures.

  8. P versus NP problem - Wikipedia

    en.wikipedia.org/wiki/P_versus_NP_problem

    The problem asks for the decomposition of a composite number ( N ) into its prime factors ( p ) and ( q ), where N = p ⋅ q . This problem is important because many modern cryptographic systems, such as RSA encryption, rely on the difficulty of factoring large numbers as a security basis.

  9. Find missing emails in AOL Mail

    help.aol.com/articles/find-missing-emails-in-aol...

    If you access AOL Mail from an app on your mobile device or your computer, your settings or actions could have caused emails to be deleted from your account or moved out of the Inbox.