Description: Elementhood in the set of eventually upper bounded functions. (Contributed by Mario Carneiro, 26-May-2016)
Ref | Expression | ||
---|---|---|---|
Assertion | ello12 | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | reex | |
|
2 | elpm2r | |
|
3 | 1 1 2 | mpanl12 | |
4 | ello1 | |
|
5 | 4 | baib | |
6 | 3 5 | syl | |
7 | elin | |
|
8 | fdm | |
|
9 | 8 | ad3antrrr | |
10 | 9 | eleq2d | |
11 | 10 | anbi1d | |
12 | simpllr | |
|
13 | 12 | sselda | |
14 | simpllr | |
|
15 | elicopnf | |
|
16 | 14 15 | syl | |
17 | 13 16 | mpbirand | |
18 | 17 | pm5.32da | |
19 | 11 18 | bitrd | |
20 | 7 19 | syl5bb | |
21 | 20 | imbi1d | |
22 | impexp | |
|
23 | 21 22 | bitrdi | |
24 | 23 | ralbidv2 | |
25 | 24 | rexbidva | |
26 | 25 | rexbidva | |
27 | 6 26 | bitrd | |