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• Bra–ket notation, also called Dirac notation, is a notation for linear algebra and linear operators on complex vector spaces together with their dual space both in the finite-dimensional and infinite-dimensional case.
• Dirac graduated from the University of Bristol with a first class honours Bachelor of Science degree in electrical engineering in 1921, and a first class honours Bachelor of Arts degree in mathematics in 1923.
• 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.
• In its free form, or including electromagnetic interactions, it describes all spin-1/2 massive particles, called "Dirac particles", such as electrons and quarks for which parity is a symmetry.
• In mathematics, a degenerate distribution (sometimes also Dirac distribution) is, according to some, a probability distribution in a space with support only on a manifold of lower dimension, and according to others a distribution with support only at a single point.
• The University of Bath can trace its roots to the Merchant Venturers' Technical College (whose alumni include the physicists Paul Dirac and Peter Higgs), an institution founded as a school in 1595 and a technical school established in Bristol in 1856 which became part of the Society of Merchant Venturers in 1885.
• It is named after Enrico Fermi and Paul Dirac, each of whom derived the distribution independently in 1926.
• Dirac (and Dirac Pro, a subset standardised as SMPTE VC-2) is an open and royalty-free video compression format, specification and software video codec developed by BBC Research & Development.
• That theory was based in turn on the theory of projection-valued measures for self-adjoint operators that had been recently developed (by von Neumann and independently by Marshall Stone) and the Hilbert space formulation of quantum mechanics (attributed by von Neumann to Paul Dirac).
• Dirac string, a fictitious one-dimensional curve in space, stretching between two magnetic monopoles.
• The Whittaker–Shannon interpolation formula is mathematically equivalent to an ideal low-pass filter whose input is a sequence of Dirac delta functions that are modulated (multiplied) by the sample values.
• As k goes to infinity, the Weibull distribution converges to a Dirac delta distribution centered at x = λ.
• Although it turned out that modeling the electron's spin required the Dirac equation, the Klein–Gordon equation correctly describes the spinless relativistic composite particles, like the pion.
• Dirac Medal (ICTP), awarded by the Abdus Salam International Centre for Theoretical Physics, Trieste.
• The particle representation was first treated in detail by Paul Dirac for bosons and by Pascual Jordan and Eugene Wigner for fermions.
• In quantum field theory, the Dirac spinor is the spinor that describes all known fundamental particles that are fermions, with the possible exception of neutrinos.
• This definition does not significantly change any of the properties of Green's function due to the evenness of the Dirac delta function.
• The positron, the antimatter counterpart of the electron, was originally conceived of as a hole in the Dirac sea, before its experimental discovery in 1932.
• The theory of distributions clarified the (then) mysteries of the Dirac delta function and Heaviside step function.
• Hund worked with such prestigious physicists as Erwin Schrödinger, Paul Dirac, Werner Heisenberg, Max Born, and Walther Bothe.

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