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  2. Quantum calculus - Wikipedia

    en.wikipedia.org/wiki/Quantum_calculus

    For 0 < q < 1, the series converges to a function F(x) on an interval (0,A] if |f(x)x α | is bounded on the interval (0, A] for some 0 ≤ α < 1. The q-integral is a Riemann–Stieltjes integral with respect to a step function having infinitely many points of increase at the points q j..The jump at the point q j is q j. Calling this step ...

  3. Stone–von Neumann theorem - Wikipedia

    en.wikipedia.org/wiki/Stone–von_Neumann_theorem

    Example 14.5 Nevertheless, in "good" cases, we expect that operators satisfying the canonical commutation relation will also satisfy the Weyl relations. The problem thus becomes classifying two jointly irreducible one-parameter unitary groups U ( t ) and V ( s ) which satisfy the Weyl relation on separable Hilbert spaces.

  4. Canonical commutation relation - Wikipedia

    en.wikipedia.org/wiki/Canonical_commutation_relation

    According to the correspondence principle, in certain limits the quantum equations of states must approach Hamilton's equations of motion.The latter state the following relation between the generalized coordinate q (e.g. position) and the generalized momentum p: {˙ = = {,}; ˙ = = {,}.

  5. List of theorems called fundamental - Wikipedia

    en.wikipedia.org/wiki/List_of_theorems_called...

    For example, the fundamental theorem of calculus gives the relationship between differential calculus and integral calculus. [1] The names are mostly traditional, so that for example the fundamental theorem of arithmetic is basic to what would now be called number theory. [2]

  6. List of equations in quantum mechanics - Wikipedia

    en.wikipedia.org/wiki/List_of_equations_in...

    [t] −1 [l] −2 The general form of wavefunction for a system of particles, each with position r i and z-component of spin s z i . Sums are over the discrete variable s z , integrals over continuous positions r .

  7. Dynamical pictures - Wikipedia

    en.wikipedia.org/wiki/Dynamical_pictures

    Commutator relations may look different from in the Schrödinger picture, because of the time dependence of operators. For example, consider the operators x(t 1), x(t 2), p(t 1) and p(t 2). The time evolution of those operators depends on the Hamiltonian of the system. Considering the one-dimensional harmonic oscillator,

  8. Algebraic logic - Wikipedia

    en.wikipedia.org/wiki/Algebraic_logic

    An example of calculus of relations arises in erotetics, the theory of questions. In the universe of utterances there are statements S and questions Q. There are two relations π and α from Q to S: q α a holds when a is a direct answer to question q. The other relation, q π p holds when p is a presupposition of question q.

  9. Lebesgue integral - Wikipedia

    en.wikipedia.org/wiki/Lebesgue_integral

    For example, the Dirichlet function, which is 1 where its argument is rational and 0 otherwise, has a Lebesgue integral, but does not have a Riemann integral. Furthermore, the Lebesgue integral of this function is zero, which agrees with the intuition that when picking a real number uniformly at random from the unit interval, the probability of ...

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