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  2. Dirac delta function - Wikipedia

    en.wikipedia.org/wiki/Dirac_delta_function

    The delta function was introduced by physicist Paul Dirac, and has since been applied routinely in physics and engineering to model point masses and instantaneous impulses. It is called the delta function because it is a continuous analogue of the Kronecker delta function, which is usually defined on a discrete domain and takes values 0 and 1.

  3. Macaulay's method - Wikipedia

    en.wikipedia.org/wiki/Macaulay's_method

    Using these integration rules makes the calculation of the deflection of Euler-Bernoulli beams simple in situations where there are multiple point loads and point moments. The Macaulay method predates more sophisticated concepts such as Dirac delta functions and step functions but achieves the same outcomes for beam problems.

  4. Dirac comb - Wikipedia

    en.wikipedia.org/wiki/Dirac_comb

    The graph of the Dirac comb function is an infinite series of Dirac delta functions spaced at intervals of T. In mathematics, a Dirac comb (also known as sha function, impulse train or sampling function) is a periodic function with the formula ⁡ := = for some given period . [1]

  5. Kronecker delta - Wikipedia

    en.wikipedia.org/wiki/Kronecker_delta

    The Kronecker delta has the so-called sifting property that for : = =. and if the integers are viewed as a measure space, endowed with the counting measure, then this property coincides with the defining property of the Dirac delta function () = (), and in fact Dirac's delta was named after the Kronecker delta because of this analogous property ...

  6. Delta function (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/Delta_function...

    Delta function may also refer to: Kronecker delta , a function of two variables which is one for equal arguments and zero otherwise, and which forms the identity element of an incidence algebra Modular discriminant (Δ), a complex function in Weierstrass's elliptic functions

  7. Delta debugging - Wikipedia

    en.wikipedia.org/wiki/Delta_Debugging

    The delta debugging algorithm isolates failure causes automatically by systematically narrowing down failure-inducing circumstances until a minimal set remains. For example, if you can supply a test case that will produce the bug you are looking for, then you can feed that to the delta debugging algorithm, which will then trim lines of code ...

  8. Hooley's delta function - Wikipedia

    en.wikipedia.org/wiki/Hooley's_delta_function

    In mathematics, Hooley's delta function (()), also called Erdős--Hooley delta-function, defines the maximum number of divisors of in [,] for all , where is the Euler's number. The first few terms of this sequence are

  9. Dirichlet kernel - Wikipedia

    en.wikipedia.org/wiki/Dirichlet_kernel

    The convolution of D n (x) with any function f of period 2 π is the nth-degree Fourier series approximation to f, i.e., we have () = () = = ^ (), where ^ = is the k th Fourier coefficient of f. This implies that in order to study convergence of Fourier series it is enough to study properties of the Dirichlet kernel.

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