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| Mirrors > Home > MPE Home > Th. List > 2lt9 | Structured version Visualization version GIF version | ||
| Description: 2 is less than 9. (Contributed by Mario Carneiro, 9-Mar-2015.) |
| Ref | Expression |
|---|---|
| 2lt9 | ⊢ 2 < 9 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2lt3 12339 | . 2 ⊢ 2 < 3 | |
| 2 | 3lt9 12371 | . 2 ⊢ 3 < 9 | |
| 3 | 2re 12246 | . . 3 ⊢ 2 ∈ ℝ | |
| 4 | 3re 12252 | . . 3 ⊢ 3 ∈ ℝ | |
| 5 | 9re 12271 | . . 3 ⊢ 9 ∈ ℝ | |
| 6 | 3, 4, 5 | lttri 11263 | . 2 ⊢ ((2 < 3 ∧ 3 < 9) → 2 < 9) |
| 7 | 1, 2, 6 | mp2an 698 | 1 ⊢ 2 < 9 |
| Colors of variables: wff setvar class |
| Syntax hints: class class class wbr 5072 < clt 11170 2c2 12227 3c3 12228 9c9 12234 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2711 ax-sep 5218 ax-nul 5228 ax-pow 5294 ax-pr 5362 ax-un 7678 ax-resscn 11086 ax-1cn 11087 ax-icn 11088 ax-addcl 11089 ax-addrcl 11090 ax-mulcl 11091 ax-mulrcl 11092 ax-mulcom 11093 ax-addass 11094 ax-mulass 11095 ax-distr 11096 ax-i2m1 11097 ax-1ne0 11098 ax-1rid 11099 ax-rnegex 11100 ax-rrecex 11101 ax-cnre 11102 ax-pre-lttri 11103 ax-pre-lttrn 11104 ax-pre-ltadd 11105 ax-pre-mulgt0 11106 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3or 1093 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2718 df-cleq 2731 df-clel 2814 df-nfc 2888 df-ne 2935 df-nel 3039 df-ral 3054 df-rex 3064 df-reu 3345 df-rab 3392 df-v 3433 df-sbc 3724 df-csb 3832 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4262 df-if 4455 df-pw 4531 df-sn 4556 df-pr 4558 df-op 4562 df-uni 4839 df-br 5073 df-opab 5135 df-mpt 5154 df-id 5513 df-po 5526 df-so 5527 df-xp 5624 df-rel 5625 df-cnv 5626 df-co 5627 df-dm 5628 df-rn 5629 df-res 5630 df-ima 5631 df-iota 6441 df-fun 6487 df-fn 6488 df-f 6489 df-f1 6490 df-fo 6491 df-f1o 6492 df-fv 6493 df-riota 7313 df-ov 7359 df-oprab 7360 df-mpo 7361 df-er 8633 df-en 8884 df-dom 8885 df-sdom 8886 df-pnf 11172 df-mnf 11173 df-xr 11174 df-ltxr 11175 df-le 11176 df-sub 11370 df-neg 11371 df-2 12235 df-3 12236 df-4 12237 df-5 12238 df-6 12239 df-7 12240 df-8 12241 df-9 12242 |
| This theorem is referenced by: 1lt9 12373 tsetndxnplusgndx 17311 topgrpstr 17315 2logb9irr 26777 hgt750leme 34842 aks4d1p7d1 42567 31prm 48075 341fppr2 48225 nfermltl2rev 48234 wtgoldbnnsum4prm 48293 bgoldbnnsum3prm 48295 ackval42 49187 |
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