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Mirrors > Home > ILE Home > Th. List > iccid | Unicode version |
Description: A closed interval with identical lower and upper bounds is a singleton. (Contributed by Jeff Hankins, 13-Jul-2009.) |
Ref | Expression |
---|---|
iccid |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elicc1 9700 | . . . 4 | |
2 | 1 | anidms 394 | . . 3 |
3 | xrlenlt 7822 | . . . . . . . 8 | |
4 | xrlenlt 7822 | . . . . . . . . . . 11 | |
5 | 4 | ancoms 266 | . . . . . . . . . 10 |
6 | xrlttri3 9576 | . . . . . . . . . . . . 13 | |
7 | 6 | biimprd 157 | . . . . . . . . . . . 12 |
8 | 7 | ancoms 266 | . . . . . . . . . . 11 |
9 | 8 | expcomd 1417 | . . . . . . . . . 10 |
10 | 5, 9 | sylbid 149 | . . . . . . . . 9 |
11 | 10 | com23 78 | . . . . . . . 8 |
12 | 3, 11 | sylbid 149 | . . . . . . 7 |
13 | 12 | ex 114 | . . . . . 6 |
14 | 13 | 3impd 1199 | . . . . 5 |
15 | eleq1a 2209 | . . . . . 6 | |
16 | xrleid 9579 | . . . . . . 7 | |
17 | breq2 3928 | . . . . . . 7 | |
18 | 16, 17 | syl5ibrcom 156 | . . . . . 6 |
19 | breq1 3927 | . . . . . . 7 | |
20 | 16, 19 | syl5ibrcom 156 | . . . . . 6 |
21 | 15, 18, 20 | 3jcad 1162 | . . . . 5 |
22 | 14, 21 | impbid 128 | . . . 4 |
23 | velsn 3539 | . . . 4 | |
24 | 22, 23 | syl6bbr 197 | . . 3 |
25 | 2, 24 | bitrd 187 | . 2 |
26 | 25 | eqrdv 2135 | 1 |
Colors of variables: wff set class |
Syntax hints: wn 3 wi 4 wa 103 wb 104 w3a 962 wceq 1331 wcel 1480 csn 3522 class class class wbr 3924 (class class class)co 5767 cxr 7792 clt 7793 cle 7794 cicc 9667 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 603 ax-in2 604 ax-io 698 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-10 1483 ax-11 1484 ax-i12 1485 ax-bndl 1486 ax-4 1487 ax-13 1491 ax-14 1492 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2119 ax-sep 4041 ax-pow 4093 ax-pr 4126 ax-un 4350 ax-setind 4447 ax-cnex 7704 ax-resscn 7705 ax-pre-ltirr 7725 ax-pre-apti 7728 |
This theorem depends on definitions: df-bi 116 df-3or 963 df-3an 964 df-tru 1334 df-fal 1337 df-nf 1437 df-sb 1736 df-eu 2000 df-mo 2001 df-clab 2124 df-cleq 2130 df-clel 2133 df-nfc 2268 df-ne 2307 df-nel 2402 df-ral 2419 df-rex 2420 df-rab 2423 df-v 2683 df-sbc 2905 df-dif 3068 df-un 3070 df-in 3072 df-ss 3079 df-pw 3507 df-sn 3528 df-pr 3529 df-op 3531 df-uni 3732 df-br 3925 df-opab 3985 df-id 4210 df-xp 4540 df-rel 4541 df-cnv 4542 df-co 4543 df-dm 4544 df-iota 5083 df-fun 5120 df-fv 5126 df-ov 5770 df-oprab 5771 df-mpo 5772 df-pnf 7795 df-mnf 7796 df-xr 7797 df-ltxr 7798 df-le 7799 df-icc 9671 |
This theorem is referenced by: (None) |
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