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The first chip identifies the source of the statement or construction; the second identifies the source of its local proof or verification.
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These labels describe origin, not correctness: citations and verification chips remain separate evidence.
Truncated integrals of rational powers
Statement
For rational and , For and every positive integer ,
Facts & Assumptions
Given: Positive endpoints and the stated rational exponent.
Positive rational powers satisfy the exponent, product, and monotonicity laws (Rational powers of a positive base, Laws of rational exponents, Monotonicity of and of ).
Proper substitution and the FTC evaluate integrals from verified primitives (Substitution: if is differentiable on with integrable and is continuous on an interval containing , then , The second fundamental theorem: if is differentiable on with and is integrable, then ).
Integer-power differentiation, the product rule, and the reciprocal rule follow from the derivative algebra (Integer powers , Sums, scalar multiples, products and quotients: , , , and when ).
Proof
Write with an integer and a positive integer . Substituting on the positive interval and using [L1]–[L3] reduces the integrand to . The integer-power rule gives primitive when . Substituting back gives . The FTC proves the displayed formula.
On , , so its integral is at least . Adding the first dyadic blocks proves the first lower bound. The intervals give the second in the same way.
Depends on
Rational powers of a positive base
Laws of rational exponents
Monotonicity of and of
Existence and uniqueness of -th roots: a unique with
Sums, scalar multiples, products and quotients: , , , and when
Substitution: if is differentiable on with integrable and is continuous on an interval containing , then
Every continuous function on an interval has a primitive; two primitives differ by a constant; and for any primitive
The second fundamental theorem: if is differentiable on with and is integrable, then
Integer powers
The canonical natural of a field
The derivative of at a point that is a limit point of , and differentiability on a set