Metamath Proof Explorer


Theorem ditgeq3i

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

Ref Expression
Hypothesis ditgeq3i.1 𝐶 = 𝐷
Assertion ditgeq3i ⨜ [ 𝐴𝐵 ] 𝐶 d 𝑥 = ⨜ [ 𝐴𝐵 ] 𝐷 d 𝑥

Proof

Step Hyp Ref Expression
1 ditgeq3i.1 𝐶 = 𝐷
2 eqid 𝐴 = 𝐴
3 eqid 𝐵 = 𝐵
4 2 3 1 ditgeq123i ⨜ [ 𝐴𝐵 ] 𝐶 d 𝑥 = ⨜ [ 𝐴𝐵 ] 𝐷 d 𝑥