Description: The injected slot is an element of the structure with replacement. (Contributed by AV, 10-Nov-2021)
Ref | Expression | ||
---|---|---|---|
Hypotheses | setsidel.s | |
|
setsidel.b | |
||
setsidel.r | |
||
Assertion | setsidel | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | setsidel.s | |
|
2 | setsidel.b | |
|
3 | setsidel.r | |
|
4 | opex | |
|
5 | 4 | snid | |
6 | elun2 | |
|
7 | 5 6 | mp1i | |
8 | setsval | |
|
9 | 1 2 8 | syl2anc | |
10 | 3 9 | eqtrid | |
11 | 7 10 | eleqtrrd | |