Description: A deduction version of ax-hgt749 . (Contributed by Thierry Arnoux, 15-Dec-2021)
Ref | Expression | ||
---|---|---|---|
Hypotheses | hgt749d.o | |
|
hgt749d.n | |
||
hgt749d.1 | |
||
Assertion | hgt749d | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | hgt749d.o | |
|
2 | hgt749d.n | |
|
3 | hgt749d.1 | |
|
4 | breq2 | |
|
5 | oveq1 | |
|
6 | 5 | oveq2d | |
7 | oveq2 | |
|
8 | 7 | fveq1d | |
9 | oveq2 | |
|
10 | 9 | fveq1d | |
11 | 10 | oveq1d | |
12 | 8 11 | oveq12d | |
13 | negeq | |
|
14 | 13 | oveq1d | |
15 | 14 | oveq2d | |
16 | 15 | fveq2d | |
17 | 12 16 | oveq12d | |
18 | 17 | adantr | |
19 | 18 | itgeq2dv | |
20 | 6 19 | breq12d | |
21 | 20 | 3anbi3d | |
22 | 21 | rexbidv | |
23 | 22 | rexbidv | |
24 | 4 23 | imbi12d | |
25 | ax-hgt749 | |
|
26 | 25 | a1i | |
27 | 2 1 | eleqtrdi | |
28 | 24 26 27 | rspcdva | |
29 | 3 28 | mpd | |