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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 12287 | . 2 ⊢ 2 < 3 | |
| 2 | 3lt9 12319 | . 2 ⊢ 3 < 9 | |
| 3 | 2re 12194 | . . 3 ⊢ 2 ∈ ℝ | |
| 4 | 3re 12200 | . . 3 ⊢ 3 ∈ ℝ | |
| 5 | 9re 12219 | . . 3 ⊢ 9 ∈ ℝ | |
| 6 | 3, 4, 5 | lttri 11234 | . 2 ⊢ ((2 < 3 ∧ 3 < 9) → 2 < 9) |
| 7 | 1, 2, 6 | mp2an 692 | 1 ⊢ 2 < 9 |
| Colors of variables: wff setvar class |
| Syntax hints: class class class wbr 5086 < clt 11141 2c2 12175 3c3 12176 9c9 12182 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2113 ax-9 2121 ax-10 2144 ax-11 2160 ax-12 2180 ax-ext 2703 ax-sep 5229 ax-nul 5239 ax-pow 5298 ax-pr 5365 ax-un 7663 ax-resscn 11058 ax-1cn 11059 ax-icn 11060 ax-addcl 11061 ax-addrcl 11062 ax-mulcl 11063 ax-mulrcl 11064 ax-mulcom 11065 ax-addass 11066 ax-mulass 11067 ax-distr 11068 ax-i2m1 11069 ax-1ne0 11070 ax-1rid 11071 ax-rnegex 11072 ax-rrecex 11073 ax-cnre 11074 ax-pre-lttri 11075 ax-pre-lttrn 11076 ax-pre-ltadd 11077 ax-pre-mulgt0 11078 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2535 df-eu 2564 df-clab 2710 df-cleq 2723 df-clel 2806 df-nfc 2881 df-ne 2929 df-nel 3033 df-ral 3048 df-rex 3057 df-reu 3347 df-rab 3396 df-v 3438 df-sbc 3737 df-csb 3846 df-dif 3900 df-un 3902 df-in 3904 df-ss 3914 df-nul 4279 df-if 4471 df-pw 4547 df-sn 4572 df-pr 4574 df-op 4578 df-uni 4855 df-br 5087 df-opab 5149 df-mpt 5168 df-id 5506 df-po 5519 df-so 5520 df-xp 5617 df-rel 5618 df-cnv 5619 df-co 5620 df-dm 5621 df-rn 5622 df-res 5623 df-ima 5624 df-iota 6432 df-fun 6478 df-fn 6479 df-f 6480 df-f1 6481 df-fo 6482 df-f1o 6483 df-fv 6484 df-riota 7298 df-ov 7344 df-oprab 7345 df-mpo 7346 df-er 8617 df-en 8865 df-dom 8866 df-sdom 8867 df-pnf 11143 df-mnf 11144 df-xr 11145 df-ltxr 11146 df-le 11147 df-sub 11341 df-neg 11342 df-2 12183 df-3 12184 df-4 12185 df-5 12186 df-6 12187 df-7 12188 df-8 12189 df-9 12190 |
| This theorem is referenced by: 1lt9 12321 tsetndxnplusgndx 17256 topgrpstr 17260 2logb9irr 26727 hgt750leme 34663 aks4d1p7d1 42115 31prm 47628 341fppr2 47765 nfermltl2rev 47774 wtgoldbnnsum4prm 47833 bgoldbnnsum3prm 47835 ackval42 48728 |
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