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  2. Concatenation - Wikipedia

    en.wikipedia.org/wiki/Concatenation

    Many authors also use concatenation of a string set and a single string, and vice versa, which are defined similarly by S 1 w = { vw : v ∈ S 1} and vS 2 = { vw : w ∈ S 2}. In these definitions, the string vw is the ordinary concatenation of strings v and w as defined in the introductory section.

  3. Pasting lemma - Wikipedia

    en.wikipedia.org/wiki/Pasting_lemma

    In topology, the pasting or gluing lemma, and sometimes the gluing rule, is an important result which says that two continuous functions can be "glued together" to create another continuous function. The lemma is implicit in the use of piecewise functions .

  4. Concatenative programming language - Wikipedia

    en.wikipedia.org/wiki/Concatenative_programming...

    A concatenative programming language is a point-free computer programming language in which all expressions denote functions, and the juxtaposition of expressions denotes function composition. [1] Concatenative programming replaces function application , which is common in other programming styles, with function composition as the default way ...

  5. Append - Wikipedia

    en.wikipedia.org/wiki/Append

    (append ' (1 2 3) ' (a b) ' ' (6));Output: (1 2 3 a b 6) Since the append procedure must completely copy all of its arguments except the last, both its time and space complexity are O( n ) for a list of n {\displaystyle n} elements.

  6. Contraction mapping - Wikipedia

    en.wikipedia.org/wiki/Contraction_mapping

    A contraction mapping has at most one fixed point. Moreover, the Banach fixed-point theorem states that every contraction mapping on a non-empty complete metric space has a unique fixed point, and that for any x in M the iterated function sequence x, f (x), f (f (x)), f (f (f (x))), ... converges to the fixed point

  7. Bernstein polynomial - Wikipedia

    en.wikipedia.org/wiki/Bernstein_polynomial

    It also depends on 'M', the absolute bound of the function, although this can be bypassed if one bounds and the interval size. Thus, the approximation only holds uniformly across x for a fixed f , but one can readily extend the proof to uniformly approximate a set of functions with a set of Bernstein polynomials in the context of equicontinuity .

  8. Narcissists maintain control through ‘bright siding.’ Here’s ...

    www.aol.com/narcissists-maintain-control-bright...

    Narcissists are everywhere, but you should never tell someone they are one. Here's why. Here's why. If you know a loved one going through narcissistic abuse, it may be tempting to bright side them ...

  9. Künneth theorem - Wikipedia

    en.wikipedia.org/wiki/Künneth_theorem

    The above formula is simple because vector spaces over a field have very restricted behavior. As the coefficient ring becomes more general, the relationship becomes more complicated. The next simplest case is the case when the coefficient ring is a principal ideal domain .