Description: The intersection of the image of singleton. (Contributed by Thierry Arnoux, 16-Dec-2017)
Ref | Expression | ||
---|---|---|---|
Assertion | inimasn | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elin | |
|
2 | elin | |
|
3 | 2 | a1i | |
4 | elimasng | |
|
5 | 4 | elvd | |
6 | elimasng | |
|
7 | 6 | elvd | |
8 | elimasng | |
|
9 | 8 | elvd | |
10 | 7 9 | anbi12d | |
11 | 3 5 10 | 3bitr4rd | |
12 | 1 11 | bitr2id | |
13 | 12 | eqrdv | |