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Chebyshev-Markov inequality for the integral
Statement
Let be measurable and let . Then
Facts & Assumptions
Given: A nonnegative measurable function and a real number .
The nonnegative integral is monotone and homogeneous (Monotonicity and nonnegative homogeneity of the nonnegative integral).
For measurable and , the nonnegative integral of the simple function is (The nonnegative integral agrees with the simple integral on simple functions, The integral of a nonnegative simple function).
Proof
Put , which is measurable. Since , [L1] and [L2] give
Dividing by the positive real gives
Depends on
Used by
- Almost-everywhere convergence from the Carleson–Hunt estimate Corollary
- Almost-everywhere convergence of principal-value truncations Corollary
- Convergence in Lᵖ implies convergence in measure Corollary
- Dominated convergence is a Vitali corollary Corollary
- Markov's inequality for random variables Corollary
- The zero-countable / infinity-cocountable measure space breaks the p=1 endpoint of duality Counterexample
- Weak subsolutions and supersolutions of a divergence-form equation Definition
- A function whose trace is at most a level has positive part in the zero-boundary space Lemma
- A weak maximal bound implies almost-everywhere Fourier convergence Lemma
- Calderon reproducing pair and the telescoping identity in S' Lemma
- De Giorgi oscillation reduction: one half-level set is small Lemma
- Differentiation of L-one functions for a doubling weight Lemma
- Ergodic averages converge in Lp on finite-measure spaces Lemma
- For 1 ≤ p < ∞, every Lᵖ(μ) class has a sigma-finite essential support Lemma
- Marcinkiewicz interpolation from weak (1,1) and strong (2,2) Lemma
- Reiter functions can be cut down to Følner sets Lemma
- Sobolev level-set step: energy decay with explicit level gap and radius loss Lemma
- The good part has controlled L2 image Lemma
- The layer-cake identity for integrable functions Lemma
- Dominated families are uniformly integrable Proposition
- The L1 endpoint is excluded Remark
- Calderón–Zygmund operators are bounded on Lp Theorem
- Calderón–Zygmund operators are of weak type (1,1) Theorem
- Convergence in L¹(mu) implies convergence in measure Theorem
- De Giorgi local boundedness of homogeneous subsolutions Theorem
- Fatou limits for Poisson extensions of L1 boundary data Theorem
- Lebesgue differentiation theorem on ℝⁿ Theorem
- Maximal truncations: weak (1,1) and strong Lp bounds Theorem
- The Følner criterion for locally compact groups Theorem
- The Hardy-Littlewood maximal operator characterises Aₚ Theorem
- Weak maximum principle for coercive divergence-form equations Theorem
- Weighted L-p bounds for standard Calderon-Zygmund maximal truncations Theorem
Dependency tree · two levels
13 results within two dependency steps of this one, each drawn at its shortest distance from it. An arrow runs from a result to what uses it, so the chart reads left to right and ends at this result, which carries a heavier outline. Every node is a link to that result. Click elsewhere on the chart to enlarge it.
Sources
- John K. Hunter, Measure Theory Notes, ch. 4 (standard reference, not scraped)