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  2. Sum-product number - Wikipedia

    en.wikipedia.org/wiki/Sum-product_number

    A sum-product number is a sociable sum-product number with =, and an amicable sum-product number is a sociable sum-product number with = All natural numbers n {\displaystyle n} are preperiodic points for F b {\displaystyle F_{b}} , regardless of the base.

  3. Algebraic data type - Wikipedia

    en.wikipedia.org/wiki/Algebraic_data_type

    One of the most common examples of an algebraic data type is the singly linked list.A list type is a sum type with two variants, Nil for an empty list and Cons x xs for the combination of a new element x with a list xs to create a new list.

  4. Erdős–Szemerédi theorem - Wikipedia

    en.wikipedia.org/wiki/Erdős–Szemerédi_theorem

    The sum-product conjecture informally says that one of the sum set or the product set of any set must be nearly as large as possible. It was originally conjectured by Erdős in 1974 to hold whether A is a set of integers, reals, or complex numbers. [3] More precisely, it proposes that, for any set A ⊂ ℂ, one has

  5. Product (mathematics) - Wikipedia

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

    In mathematics, a product is the result of multiplication, or an expression that identifies objects (numbers or variables) to be multiplied, called factors.For example, 21 is the product of 3 and 7 (the result of multiplication), and (+) is the product of and (+) (indicating that the two factors should be multiplied together).

  6. Canonical normal form - Wikipedia

    en.wikipedia.org/wiki/Canonical_normal_form

    Canonical normal form is a standardized representation of mathematical expressions, used in computer science and logic.

  7. Box Office: ‘Dog Man’ Still Off the Leash at No. 1, ‘Heart ...

    www.aol.com/box-office-dog-man-still-162539043.html

    It seems an old “Dog Man” can outearn new pics, as the DreamWorks Animation caper will lead the domestic box office for a second weekend in a row. Meanwhile, slasher “Heart Eyes” and Ke ...

  8. Summation by parts - Wikipedia

    en.wikipedia.org/wiki/Summation_by_parts

    The formula for an integration by parts is () ′ = [() ()] ′ ().. Beside the boundary conditions, we notice that the first integral contains two multiplied functions, one which is integrated in the final integral (′ becomes ) and one which is differentiated (becomes ′).

  9. It’s not just Gen X parents in suburbia who are enduring a ...

    www.aol.com/finance/not-just-gen-x-parents...

    Young adults are taking the supercommute into work, a trend that will only likely continue as return-to-office mandates from Amazon, JP Morgan, and others continue.. Molly Hopkins, age 30, has ...