Riemann Integrable Function is Lebesgue Integrable

Theorem

Let $f$ be a Riemann integrable function.

Then $f$ is also a Lebesgue integrable function.

Proof

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Sources

• 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): integrability
• 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): integrability