Theorem itgeq1i

Description: Equality inference for an integral. (Contributed by GG, 1-Sep-2025)

	Ref	Expression
Hypothesis	itgeq1i.1	$$⊢A=B$$
Assertion	itgeq1i	$$⊢{\int }_{A}Cdx={\int }_{B}Cdx$$

Proof

Step	Hyp	Ref	Expression
1		itgeq1i.1	$$⊢A=B$$
2		eqid	$$⊢C=C$$
3	1 2	itgeq12i	$$⊢{\int }_{A}Cdx={\int }_{B}Cdx$$