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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 8117 |
. 2
| |
| 5 | 1, 2, 3, 4 | mp3an 1348 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 615 ax-in2 616 ax-io 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-13 2169 ax-14 2170 ax-ext 2178 ax-sep 4152 ax-pow 4208 ax-pr 4243 ax-un 4469 ax-setind 4574 ax-cnex 7987 ax-resscn 7988 ax-pre-lttrn 8010 |
| This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-fal 1370 df-nf 1475 df-sb 1777 df-eu 2048 df-mo 2049 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ne 2368 df-nel 2463 df-ral 2480 df-rex 2481 df-rab 2484 df-v 2765 df-dif 3159 df-un 3161 df-in 3163 df-ss 3170 df-pw 3608 df-sn 3629 df-pr 3630 df-op 3632 df-uni 3841 df-br 4035 df-opab 4096 df-xp 4670 df-pnf 8080 df-mnf 8081 df-ltxr 8083 |
| This theorem is referenced by: 1lt3 9179 2lt4 9181 1lt4 9182 3lt5 9184 2lt5 9185 1lt5 9186 4lt6 9188 3lt6 9189 2lt6 9190 1lt6 9191 5lt7 9193 4lt7 9194 3lt7 9195 2lt7 9196 1lt7 9197 6lt8 9199 5lt8 9200 4lt8 9201 3lt8 9202 2lt8 9203 1lt8 9204 7lt9 9206 6lt9 9207 5lt9 9208 4lt9 9209 3lt9 9210 2lt9 9211 1lt9 9212 8lt10 9605 7lt10 9606 6lt10 9607 5lt10 9608 4lt10 9609 3lt10 9610 2lt10 9611 1lt10 9612 sincos2sgn 11948 cos12dec 11950 epos 11963 ene1 11967 eap1 11968 reeff1o 15093 pipos 15108 pigt3 15164 apdiff 15779 |
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