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2. Tanh-sinh quadrature - Wikipedia

   en.wikipedia.org/wiki/Tanh-sinh_quadrature

   Tanh-sinh, exp-sinh, and sinh-sinh quadrature are implemented in the C++ library Boost [3] Tanh-sinh quadrature is implemented in a macro-enabled Excel spreadsheet by Graeme Dennes. [4] Tanh-sinh quadrature is implemented in the Haskell package integration. [5] Tanh-sinh quadrature is implemented in the Python library mpmath. [6]

3. In-phase and quadrature components - Wikipedia

   en.wikipedia.org/wiki/In-phase_and_quadrature...

   The two amplitude-modulated sinusoids are known as the in-phase (I) and quadrature (Q) components, which describes their relationships with the amplitude- and phase-modulated carrier. [ A ] [ 2 ] Or in other words, it is possible to create an arbitrarily phase-shifted sine wave, by mixing together two sine waves that are 90° out of phase in ...

4. Optical phase space - Wikipedia

   en.wikipedia.org/wiki/Optical_phase_space

   Operators given by ^ = (^ † + ^) and ^ = (^ † ^) are called the quadratures and they represent the real and imaginary parts of the complex amplitude represented by ^. [1] The commutation relation between the two quadratures can easily be calculated:

5. Newton–Cotes formulas - Wikipedia

   en.wikipedia.org/wiki/Newton–Cotes_formulas

   It is assumed that the value of a function f defined on [,] is known at + equally spaced points: < < <.There are two classes of Newton–Cotes quadrature: they are called "closed" when = and =, i.e. they use the function values at the interval endpoints, and "open" when > and <, i.e. they do not use the function values at the endpoints.

6. Quadrature - Wikipedia

   en.wikipedia.org/wiki/Quadrature

   Quadrature amplitude modulation (QAM), a modulation method of using both an (in-phase) carrier wave and a 'quadrature' carrier wave that is 90° out of phase with the main, or in-phase, carrier Quadrature phase-shift keying (QPSK), a phase-shift keying of using four quadrate points on the constellation diagram, equispaced around a circle

7. Constellation diagram - Wikipedia

   en.wikipedia.org/wiki/Constellation_diagram

   A constellation diagram is a representation of a signal modulated by a digital modulation scheme such as quadrature amplitude modulation or phase-shift keying. [1] It displays the signal as a two-dimensional xy-plane scatter diagram in the complex plane at symbol sampling instants.