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Mirrors > Home > ILE Home > Th. List > df-icc | Unicode version |
Description: Define the set of closed intervals of extended reals. (Contributed by NM, 24-Dec-2006.) |
Ref | Expression |
---|---|
df-icc |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cicc 9823 | . 2 | |
2 | vx | . . 3 | |
3 | vy | . . 3 | |
4 | cxr 7928 | . . 3 | |
5 | 2 | cv 1342 | . . . . . 6 |
6 | vz | . . . . . . 7 | |
7 | 6 | cv 1342 | . . . . . 6 |
8 | cle 7930 | . . . . . 6 | |
9 | 5, 7, 8 | wbr 3981 | . . . . 5 |
10 | 3 | cv 1342 | . . . . . 6 |
11 | 7, 10, 8 | wbr 3981 | . . . . 5 |
12 | 9, 11 | wa 103 | . . . 4 |
13 | 12, 6, 4 | crab 2447 | . . 3 |
14 | 2, 3, 4, 4, 13 | cmpo 5843 | . 2 |
15 | 1, 14 | wceq 1343 | 1 |
Colors of variables: wff set class |
This definition is referenced by: iccval 9852 elicc1 9856 iccss 9873 iccssioo 9874 iccss2 9876 iccssico 9877 iccssxr 9888 ioossicc 9891 icossicc 9892 iocssicc 9893 iccf 9904 ioodisj 9925 |
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