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| Mirrors > Home > ILE Home > Th. List > 4lt8 | GIF version | ||
| Description: 4 is less than 8. (Contributed by Mario Carneiro, 15-Sep-2013.) |
| Ref | Expression |
|---|---|
| 4lt8 | ⊢ 4 < 8 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 4lt5 9318 | . 2 ⊢ 4 < 5 | |
| 2 | 5lt8 9335 | . 2 ⊢ 5 < 8 | |
| 3 | 4re 9219 | . . 3 ⊢ 4 ∈ ℝ | |
| 4 | 5re 9221 | . . 3 ⊢ 5 ∈ ℝ | |
| 5 | 8re 9227 | . . 3 ⊢ 8 ∈ ℝ | |
| 6 | 3, 4, 5 | lttri 8283 | . 2 ⊢ ((4 < 5 ∧ 5 < 8) → 4 < 8) |
| 7 | 1, 2, 6 | mp2an 426 | 1 ⊢ 4 < 8 |
| Colors of variables: wff set class |
| Syntax hints: class class class wbr 4088 < clt 8213 4c4 9195 5c5 9196 8c8 9199 |
| 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 619 ax-in2 620 ax-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2204 ax-14 2205 ax-ext 2213 ax-sep 4207 ax-pow 4264 ax-pr 4299 ax-un 4530 ax-setind 4635 ax-cnex 8122 ax-resscn 8123 ax-1cn 8124 ax-1re 8125 ax-icn 8126 ax-addcl 8127 ax-addrcl 8128 ax-mulcl 8129 ax-addcom 8131 ax-addass 8133 ax-i2m1 8136 ax-0lt1 8137 ax-0id 8139 ax-rnegex 8140 ax-pre-lttrn 8145 ax-pre-ltadd 8147 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-fal 1403 df-nf 1509 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ne 2403 df-nel 2498 df-ral 2515 df-rex 2516 df-rab 2519 df-v 2804 df-dif 3202 df-un 3204 df-in 3206 df-ss 3213 df-pw 3654 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-br 4089 df-opab 4151 df-xp 4731 df-iota 5286 df-fv 5334 df-ov 6020 df-pnf 8215 df-mnf 8216 df-ltxr 8218 df-2 9201 df-3 9202 df-4 9203 df-5 9204 df-6 9205 df-7 9206 df-8 9207 |
| This theorem is referenced by: 3lt8 9337 |
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