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| Mirrors > Home > ILE Home > Th. List > lttri | Unicode version | ||
| Description: 'Less than' is transitive. Theorem I.17 of [Apostol] p. 20. (Contributed by NM, 14-May-1999.) |
| Ref | Expression |
|---|---|
| lt.1 |
|
| lt.2 |
|
| lt.3 |
|
| Ref | Expression |
|---|---|
| lttri |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | lt.1 |
. 2
| |
| 2 | lt.2 |
. 2
| |
| 3 | lt.3 |
. 2
| |
| 4 | lttr 8399 |
. 2
| |
| 5 | 1, 2, 3, 4 | mp3an 1378 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4249 ax-pow 4311 ax-pr 4346 ax-un 4578 ax-setind 4684 ax-cnex 8270 ax-resscn 8271 ax-pre-lttrn 8293 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-nel 2516 df-ral 2533 df-rex 2534 df-rab 2537 df-v 2823 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-br 4131 df-opab 4193 df-xp 4780 df-pnf 8362 df-mnf 8363 df-ltxr 8365 |
| This theorem is used by: 1lt3 9476 2lt4 9478 1lt4 9479 3lt5 9481 2lt5 9482 1lt5 9483 4lt6 9485 3lt6 9486 2lt6 9487 1lt6 9488 5lt7 9490 4lt7 9491 3lt7 9492 2lt7 9493 1lt7 9494 6lt8 9496 5lt8 9497 4lt8 9498 3lt8 9499 2lt8 9500 1lt8 9501 7lt9 9503 6lt9 9504 5lt9 9505 4lt9 9506 3lt9 9507 2lt9 9508 1lt9 9509 8lt10 9908 7lt10 9909 6lt10 9910 5lt10 9911 4lt10 9912 3lt10 9913 2lt10 9914 1lt10 9915 sincos2sgn 12533 cos12dec 12535 epos 12548 ene1 12552 eap1 12553 reeff1o 15874 pipos 15889 pigt3 15945 apdiff 17097 |
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