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  2. Cauchy–Schwarz inequality - Wikipedia

    en.wikipedia.org/wiki/CauchySchwarz_inequality

    CauchySchwarz inequality (Modified Schwarz inequality for 2-positive maps [27]) — For a 2-positive map between C*-algebras, for all , in its domain, () ‖ ‖ (), ‖ ‖ ‖ ‖ ‖ ‖. Another generalization is a refinement obtained by interpolating between both sides of the CauchySchwarz inequality:

  3. Cramér–Rao bound - Wikipedia

    en.wikipedia.org/wiki/Cramér–Rao_bound

    The Cramér–Rao bound then states that the covariance matrix of () ... First equation: ... The CauchySchwarz inequality shows that ...

  4. Covariance - Wikipedia

    en.wikipedia.org/wiki/Covariance

    The equation uses a covariance between a trait and fitness, to give a mathematical description of evolution and natural selection. It provides a way to understand the effects that gene transmission and natural selection have on the proportion of genes within each new generation of a population.

  5. Cauchy's estimate - Wikipedia

    en.wikipedia.org/wiki/Cauchy's_estimate

    In mathematics, specifically in complex analysis, Cauchy's estimate gives local bounds for the derivatives of a holomorphic function. These bounds are optimal. These bounds are optimal. Cauchy's estimate is also called Cauchy's inequality , but must not be confused with the CauchySchwarz inequality .

  6. Autocorrelation - Wikipedia

    en.wikipedia.org/wiki/Autocorrelation

    The CauchySchwarz inequality, ... in the above formula with . This estimate ... The auto-covariance matrix is related to the autocorrelation matrix as follows: ...

  7. QM-AM-GM-HM inequalities - Wikipedia

    en.wikipedia.org/wiki/QM-AM-GM-HM_Inequalities

    There are three inequalities between means to prove. There are various methods to prove the inequalities, including mathematical induction, the CauchySchwarz inequality, Lagrange multipliers, and Jensen's inequality. For several proofs that GM ≤ AM, see Inequality of arithmetic and geometric means.

  8. Coherence (signal processing) - Wikipedia

    en.wikipedia.org/wiki/Coherence_(signal_processing)

    In cases where the ideal linear system assumptions are insufficient, the CauchySchwarz inequality guarantees a value of . If C xy is less than one but greater than zero it is an indication that either: noise is entering the measurements, that the assumed function relating x(t) and y(t) is not linear, or that y(t) is producing output due to ...

  9. Lagrange's identity - Wikipedia

    en.wikipedia.org/wiki/Lagrange's_identity

    Lagrange's identity for complex numbers has been obtained from a straightforward product identity. A derivation for the reals is obviously even more succinct. Since the CauchySchwarz inequality is a particular case of Lagrange's identity, [4] this proof is yet another way to obtain the CS inequality. Higher order terms in the series produce ...