Metamath Proof Explorer
Description: Bound variable hypothesis builder for transitive closure. (Contributed by Scott Fenton, 17-Oct-2024)
|
|
Ref |
Expression |
|
Hypothesis |
nfttrcl.1 |
|
|
Assertion |
nfttrcl |
|
Proof
Step |
Hyp |
Ref |
Expression |
1 |
|
nfttrcl.1 |
|
2 |
1
|
a1i |
|
3 |
2
|
nfttrcld |
|
4 |
3
|
mptru |
|