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| Description: 'Less than or equal to' expressed in terms of 'less than', for extended reals. |
| Ref | Expression |
|---|---|
| xrlenltt |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | opelxpi 3217 |
. . . 4
| |
| 2 | df-le 5491 |
. . . . . . 7
| |
| 3 | 2 | eleq2i 1538 |
. . . . . 6
|
| 4 | eldif 2057 |
. . . . . 6
| |
| 5 | 3, 4 | bitr 173 |
. . . . 5
|
| 6 | 5 | baib 685 |
. . . 4
|
| 7 | 1, 6 | syl 10 |
. . 3
|
| 8 | df-br 2620 |
. . 3
| |
| 9 | 7, 8 | syl5bb 532 |
. 2
|
| 10 | opelcnvg 3296 |
. . . 4
| |
| 11 | df-br 2620 |
. . . 4
| |
| 12 | 10, 11 | syl6rbbr 539 |
. . 3
|
| 13 | 12 | negbid 611 |
. 2
|
| 14 | 9, 13 | bitr4d 531 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: xrltnlet 5502 lenltt 5510 pnfget 5548 mnflet 5549 xrleloet 5557 supxr2 6082 supxrbnd 6091 supxrbnd1 6095 supxrbnd2 6096 supxrub 6098 supxrleub 6099 ioon0t 6369 nmlnogt0 8457 iintlem1 10632 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 962 ax-gen 963 ax-8 964 ax-10 966 ax-11 967 ax-12 968 ax-13 969 ax-14 970 ax-17 971 ax-4 973 ax-5o 975 ax-6o 978 ax-9o 1123 ax-10o 1140 ax-16 1210 ax-11o 1218 ax-ext 1459 ax-sep 2703 ax-pow 2742 ax-pr 2779 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 981 df-sb 1172 df-eu 1382 df-mo 1383 df-clab 1464 df-cleq 1469 df-clel 1472 df-ne 1587 df-v 1812 df-dif 2049 df-un 2050 df-in 2051 df-ss 2053 df-nul 2281 df-pw 2402 df-sn 2412 df-pr 2413 df-op 2416 df-br 2620 df-opab 2667 df-xp 3184 df-cnv 3186 df-le 5491 |