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  2. Delta operator - Wikipedia

    en.wikipedia.org/wiki/Delta_operator

    The forward difference operator () = (+) ()is a delta operator. Differentiation with respect to x, written as D, is also a delta operator.; Any operator of the form = (where D n (ƒ) = ƒ (n) is the n th derivative) with is a delta operator.

  3. Worksheet - Wikipedia

    en.wikipedia.org/wiki/Worksheet

    A worksheet, in the word's original meaning, is a sheet of paper on which one performs work. They come in many forms, most commonly associated with children's school work assignments, tax forms, and accounting or other business environments. Software is increasingly taking over the paper-based worksheet.

  4. Integral symbol - Wikipedia

    en.wikipedia.org/wiki/Integral_symbol

    The integral symbol is U+222B ∫ INTEGRAL in Unicode [5] and \int in LaTeX.In HTML, it is written as ∫ (hexadecimal), ∫ and ∫ (named entity).. The original IBM PC code page 437 character set included a couple of characters ⌠,⎮ and ⌡ (codes 244 and 245 respectively) to build the integral symbol.

  5. Discrete calculus - Wikipedia

    en.wikipedia.org/wiki/Discrete_calculus

    Discrete calculus or the calculus of discrete functions, is the mathematical study of incremental change, in the same way that geometry is the study of shape and algebra is the study of generalizations of arithmetic operations.

  6. Delta method - Wikipedia

    en.wikipedia.org/wiki/Delta_method

    By definition, a consistent estimator B converges in probability to its true value β, and often a central limit theorem can be applied to obtain asymptotic normality: (,),

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