![]() |
Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
|
Mirrors > Home > ILE Home > Th. List > df-ioo | Unicode version |
Description: Define the set of open intervals of extended reals. (Contributed by NM, 24-Dec-2006.) |
Ref | Expression |
---|---|
df-ioo |
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cioo 9888 |
. 2
![]() ![]() | |
2 | vx |
. . 3
![]() ![]() | |
3 | vy |
. . 3
![]() ![]() | |
4 | cxr 7991 |
. . 3
![]() ![]() | |
5 | 2 | cv 1352 |
. . . . . 6
![]() ![]() |
6 | vz |
. . . . . . 7
![]() ![]() | |
7 | 6 | cv 1352 |
. . . . . 6
![]() ![]() |
8 | clt 7992 |
. . . . . 6
![]() ![]() | |
9 | 5, 7, 8 | wbr 4004 |
. . . . 5
![]() ![]() ![]() ![]() |
10 | 3 | cv 1352 |
. . . . . 6
![]() ![]() |
11 | 7, 10, 8 | wbr 4004 |
. . . . 5
![]() ![]() ![]() ![]() |
12 | 9, 11 | wa 104 |
. . . 4
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
13 | 12, 6, 4 | crab 2459 |
. . 3
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
14 | 2, 3, 4, 4, 13 | cmpo 5877 |
. 2
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
15 | 1, 14 | wceq 1353 |
1
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
Colors of variables: wff set class |
This definition is referenced by: iooex 9907 iooval 9908 elioo3g 9910 elioo1 9911 iooss1 9916 iooss2 9917 eliooxr 9927 iccssioo 9942 ioossicc 9959 ioossico 9962 iocssioo 9963 icossioo 9964 ioossioo 9965 ioof 9971 ioodisj 9993 |
Copyright terms: Public domain | W3C validator |