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  2. Iterated logarithm - Wikipedia

    en.wikipedia.org/wiki/Iterated_logarithm

    Demonstrating log* 4 = 2 for the base-e iterated logarithm. The value of the iterated logarithm can be found by "zig-zagging" on the curve y = log b (x) from the input n, to the interval [0,1]. In this case, b = e. The zig-zagging entails starting from the point (n, 0) and iteratively moving to (n, log b (n) ), to (0, log b (n) ), to (log b (n ...

  3. Math library - Wikipedia

    en.wikipedia.org/wiki/Math_library

    Logarithm in base 2 is relatively straightforward, as the integer part k is already in the floating-point exponent; a preliminary range reduction is accordingly performed, yielding k. The mantissa x (where log2( x ) is between -1/2 and 1/2) is then compared to a table and intervals for further reduction into a z with known log2 and an in-range ...

  4. List of arbitrary-precision arithmetic software - Wikipedia

    en.wikipedia.org/wiki/List_of_arbitrary...

    Python: the built-in int (3.x) / long (2.x) integer type is of arbitrary precision. The Decimal class in the standard library module decimal has user definable precision and limited mathematical operations (exponentiation, square root, etc. but no trigonometric functions).

  5. Logarithmic decrement - Wikipedia

    en.wikipedia.org/wiki/Logarithmic_decrement

    The logarithmic decrement can be obtained e.g. as ln(x 1 /x 3).Logarithmic decrement, , is used to find the damping ratio of an underdamped system in the time domain.. The method of logarithmic decrement becomes less and less precise as the damping ratio increases past about 0.5; it does not apply at all for a damping ratio greater than 1.0 because the system is overdamped.

  6. Logit - Wikipedia

    en.wikipedia.org/wiki/Logit

    If p is a probability, then p/(1 − p) is the corresponding odds; the logit of the probability is the logarithm of the odds, i.e.: ⁡ = ⁡ = ⁡ ⁡ = ⁡ = ⁡ (). The base of the logarithm function used is of little importance in the present article, as long as it is greater than 1, but the natural logarithm with base e is the one most often used.

  7. Memento pattern - Wikipedia

    en.wikipedia.org/wiki/Memento_pattern

    import java.util.List; import java.util.ArrayList; class Originator {private String state; // The class could also contain additional data that is not part of the // state saved in the memento.. public void set (String state) {this. state = state; System. out. println ("Originator: Setting state to "+ state);} public Memento saveToMemento {System. out. println ("Originator: Saving to Memento."

  8. Index calculus algorithm - Wikipedia

    en.wikipedia.org/wiki/Index_calculus_algorithm

    Dedicated to the discrete logarithm in (/) where is a prime, index calculus leads to a family of algorithms adapted to finite fields and to some families of elliptic curves. The algorithm collects relations among the discrete logarithms of small primes, computes them by a linear algebra procedure and finally expresses the desired discrete ...

  9. Pollard's rho algorithm for logarithms - Wikipedia

    en.wikipedia.org/wiki/Pollard's_rho_algorithm_for...

    Download QR code; Print/export Download as PDF; ... Pollard's rho algorithm for logarithms is an algorithm introduced by John Pollard in 1978 to solve the ...