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  2. Positive and negative parts - Wikipedia

    en.wikipedia.org/wiki/Positive_and_negative_parts

    The converse, though, does not necessarily hold: for example, taking f as =, where V is a Vitali set, it is clear that f is not measurable, but its absolute value is, being a constant function. The positive part and negative part of a function are used to define the Lebesgue integral for a real-valued function.

  3. Field trace - Wikipedia

    en.wikipedia.org/wiki/Field_trace

    The trace form is used in algebraic number theory in the theory of the different ideal. The trace form for a finite degree field extension L/K has non-negative signature for any field ordering of K. [8] The converse, that every Witt equivalence class with non-negative signature contains a trace form, is true for algebraic number fields K. [8]

  4. Lodash - Wikipedia

    en.wikipedia.org/wiki/Lodash

    Lodash is a JavaScript library that helps programmers write more concise and maintainable JavaScript. It can be broken down into several main areas: Utilities: for simplifying common programming tasks such as determining type as well as simplifying math operations.

  5. Bump function - Wikipedia

    en.wikipedia.org/wiki/Bump_function

    Then the map : defined by () = (‖ ‖) is a smooth function that is positive on and vanishes off of . [1] For every , let = {| | : , …, =}, where this supremum is not equal to + (so is a non-negative real number) because () ¯ =, the partial derivatives all vanish (equal ) at any outside of , while on the compact set ¯, the values of each ...

  6. Karnaugh map - Wikipedia

    en.wikipedia.org/wiki/Karnaugh_map

    The POS expression gives a complement of the function (if F is the function so its complement will be F'). [10] Karnaugh maps can also be used to simplify logic expressions in software design. Boolean conditions, as used for example in conditional statements, can get very complicated, which makes the code difficult to read and to maintain. Once ...

  7. Sign (mathematics) - Wikipedia

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

    A number is negative if it is less than zero. A number is non-negative if it is greater than or equal to zero. A number is non-positive if it is less than or equal to zero. When 0 is said to be both positive and negative, [citation needed] modified phrases are used to refer to the sign of a number: A number is strictly positive if it is greater ...

  8. Negative number - Wikipedia

    en.wikipedia.org/wiki/Negative_number

    In mathematics, a negative number is the opposite (mathematics) of a positive real number. [1] Equivalently, a negative number is a real number that is less than zero. Negative numbers are often used to represent the magnitude of a loss or deficiency. A debt that is owed may be thought of as a negative asset.

  9. Signed measure - Wikipedia

    en.wikipedia.org/wiki/Signed_measure

    What follows are two results which will imply that an extended signed measure is the difference of two non-negative measures, and a finite signed measure is the difference of two finite non-negative measures. The Hahn decomposition theorem states that given a signed measure μ, there exist two measurable sets P and N such that: P∪N = X and P ...