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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 12410 | . 2 ⊢ 2 < 3 | |
| 2 | 3lt9 12443 | . 2 ⊢ 3 < 9 | |
| 3 | 2re 12311 | . . 3 ⊢ 2 ∈ ℝ | |
| 4 | 3re 12317 | . . 3 ⊢ 3 ∈ ℝ | |
| 5 | 9re 12336 | . . 3 ⊢ 9 ∈ ℝ | |
| 6 | 3, 4, 5 | lttri 11332 | . 2 ⊢ ((2 < 3 ∧ 3 < 9) → 2 < 9) |
| 7 | 1, 2, 6 | mp2an 704 | 1 ⊢ 2 < 9 |
| Colors of variables: wff setvar class |
| Syntax hints: class class class wbr 5110 < clt 11239 2c2 12291 3c3 12292 9c9 12298 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-sep 5258 ax-nul 5268 ax-pow 5334 ax-pr 5402 ax-un 7730 ax-resscn 11153 ax-1cn 11154 ax-icn 11155 ax-addcl 11156 ax-addrcl 11157 ax-mulcl 11158 ax-mulrcl 11159 ax-mulcom 11160 ax-addass 11161 ax-mulass 11162 ax-distr 11163 ax-i2m1 11164 ax-1ne0 11165 ax-1rid 11166 ax-rnegex 11167 ax-rrecex 11168 ax-cnre 11169 ax-pre-lttri 11170 ax-pre-lttrn 11171 ax-pre-ltadd 11172 ax-pre-mulgt0 11173 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-nel 3071 df-ral 3086 df-rex 3096 df-reu 3377 df-rab 3424 df-v 3465 df-sbc 3754 df-csb 3862 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-nul 4295 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4874 df-br 5111 df-opab 5175 df-mpt 5194 df-id 5554 df-po 5567 df-so 5568 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-iota 6489 df-fun 6535 df-fn 6536 df-f 6537 df-f1 6538 df-fo 6539 df-f1o 6540 df-fv 6541 df-riota 7365 df-ov 7411 df-oprab 7412 df-mpo 7413 df-er 8690 df-en 8940 df-dom 8941 df-sdom 8942 df-pnf 11241 df-mnf 11242 df-xr 11243 df-ltxr 11244 df-le 11245 df-sub 11439 df-neg 11440 df-2 12299 df-3 12300 df-4 12301 df-5 12302 df-6 12303 df-7 12304 df-8 12305 df-9 12306 |
| This theorem is referenced by: 1lt9 12445 2lt10 12851 tsetndxnplusgndx 17406 topgrpstr 17410 2logb9irr 26922 hgt750leme 34986 aks4d1p7d1 42734 31prm 48231 341fppr2 48381 nfermltl2rev 48390 wtgoldbnnsum4prm 48449 bgoldbnnsum3prm 48451 ackval42 49354 |
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