enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Fundamental theorem of Riemannian geometry - Wikipedia

    en.wikipedia.org/wiki/Fundamental_theorem_of...

    The fundamental theorem of Riemannian geometry states that on any Riemannian manifold (or pseudo-Riemannian manifold) there is a unique affine connection that is torsion-free and metric-compatible, called the Levi-Civita connection or (pseudo-) Riemannian connection of the given metric.

  3. Taylor's theorem - Wikipedia

    en.wikipedia.org/wiki/Taylor's_theorem

    In calculus, Taylor's theorem gives an approximation of a -times differentiable function around a given point by a polynomial of degree , called the -th-order Taylor polynomial. For a smooth function , the Taylor polynomial is the truncation at the order k {\textstyle k} of the Taylor series of the function.

  4. Arctangent series - Wikipedia

    en.wikipedia.org/wiki/Arctangent_series

    The extremely slow convergence of the arctangent series for | | makes this formula impractical per se. Kerala-school mathematicians used additional correction terms to speed convergence. John Machin (1706) expressed ⁠ 1 4 π {\displaystyle {\tfrac {1}{4}}\pi } ⁠ as a sum of arctangents of smaller values, eventually resulting in a variety of ...

  5. PDFCreator - Wikipedia

    en.wikipedia.org/wiki/Pdfcreator

    PDFCreator is an application for converting documents into Portable Document Format format on Microsoft Windows operating systems. It works by creating a virtual printer that prints to PDF files, and thereby allows practically any application to create PDF files by choosing to print from within the application and then printing to the PDFCreator printer.

  6. Fine-structure constant - Wikipedia

    en.wikipedia.org/wiki/Fine-structure_constant

    The reflection would then be given by ⁠ π 2 α 2 / 4 (1 + πα/2) 2 ⁠. The fine-structure constant gives the maximum positive charge of an atomic nucleus that will allow a stable electron-orbit around it within the Bohr model (element feynmanium ). [ 20 ]

  7. Vorticity equation - Wikipedia

    en.wikipedia.org/wiki/Vorticity_equation

    In case of conservative body forces, ∇ × B = 0.; For a barotropic fluid, ∇ρ × ∇p = 0.This is also true for a constant density fluid (including incompressible fluid) where ∇ρ = 0.

  8. Free particle - Wikipedia

    en.wikipedia.org/wiki/Free_particle

    A free particle with mass in non-relativistic quantum mechanics is described by the free Schrödinger equation: (,) = (,) where ψ is the wavefunction of the particle at position r and time t . The solution for a particle with momentum p or wave vector k , at angular frequency ω or energy E , is given by a complex plane wave :

  9. Elliptic curve point multiplication - Wikipedia

    en.wikipedia.org/wiki/Elliptic_curve_point...

    ” The GitHub page [9] lists coding rules for implementations of cryptographic operations, and more generally for operations involving secret or sensitive values. The Montgomery ladder is an x {\displaystyle x} -coordinate only algorithm for elliptic curve point multiplication and is based on the double and add rules over a specific set of ...