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  2. Computational complexity of mathematical operations - Wikipedia

    en.wikipedia.org/wiki/Computational_complexity...

    Here, complexity refers to the time complexity of performing computations on a multitape Turing machine. [1] See big O notation for an explanation of the notation used. Note: Due to the variety of multiplication algorithms, M ( n ) {\displaystyle M(n)} below stands in for the complexity of the chosen multiplication algorithm.

  3. Inverse Symbolic Calculator - Wikipedia

    en.wikipedia.org/wiki/Inverse_Symbolic_Calculator

    The Inverse Symbolic Calculator is an online number checker established July 18, 1995 by Peter Benjamin Borwein, Jonathan Michael Borwein and Simon Plouffe of the Canadian Centre for Experimental and Constructive Mathematics (Burnaby, Canada).

  4. Time complexity - Wikipedia

    en.wikipedia.org/wiki/Time_complexity

    In theoretical computer science, the time complexity is the computational complexity that describes the amount of computer time it takes to run an algorithm. Time complexity is commonly estimated by counting the number of elementary operations performed by the algorithm, supposing that each elementary operation takes a fixed amount of time to ...

  5. Inverse second - Wikipedia

    en.wikipedia.org/wiki/Inverse_second

    The inverse second or reciprocal second (s −1), also called per second, is a unit defined as the multiplicative inverse of the second (a unit of time). It is applicable for physical quantities of dimension reciprocal time, such as frequency and strain rate. It is dimensionally equivalent to:

  6. Hubble's law - Wikipedia

    en.wikipedia.org/wiki/Hubble's_law

    The Hubble constant H 0 has units of inverse time; the Hubble time t H is simply defined as the inverse of the Hubble constant, [50] i.e. t H ≡ 1 H 0 = 1 67.8 ( k m / s ) / M p c = 4.55 × 10 17 s = 14.4 billion years . {\displaystyle t_{H}\equiv {\frac {1}{H_{0}}}={\frac {1}{67.8\mathrm {~(km/s)/Mpc} }}=4.55\times 10^{17}\mathrm {~s} =14.4 ...

  7. CORDIC - Wikipedia

    en.wikipedia.org/wiki/CORDIC

    CORDIC (coordinate rotation digital computer), Volder's algorithm, Digit-by-digit method, Circular CORDIC (Jack E. Volder), [1] [2] Linear CORDIC, Hyperbolic CORDIC (John Stephen Walther), [3] [4] and Generalized Hyperbolic CORDIC (GH CORDIC) (Yuanyong Luo et al.), [5] [6] is a simple and efficient algorithm to calculate trigonometric functions, hyperbolic functions, square roots ...

  8. Ackermann function - Wikipedia

    en.wikipedia.org/wiki/Ackermann_function

    The inverse of the Ackermann function appears in some time complexity results. For instance, the disjoint-set data structure takes amortized time per operation proportional to the inverse Ackermann function, [ 24 ] and cannot be made faster within the cell-probe model of computational complexity.

  9. Discrete-time Fourier transform - Wikipedia

    en.wikipedia.org/wiki/Discrete-time_Fourier...

    The term discrete-time refers to the fact that the transform operates on discrete data, often samples whose interval has units of time. From uniformly spaced samples it produces a function of frequency that is a periodic summation of the continuous Fourier transform of the original continuous function.