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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 12195 | . 2 ⊢ 2 < 3 | |
2 | 3lt9 12227 | . 2 ⊢ 3 < 9 | |
3 | 2re 12097 | . . 3 ⊢ 2 ∈ ℝ | |
4 | 3re 12103 | . . 3 ⊢ 3 ∈ ℝ | |
5 | 9re 12122 | . . 3 ⊢ 9 ∈ ℝ | |
6 | 3, 4, 5 | lttri 11151 | . 2 ⊢ ((2 < 3 ∧ 3 < 9) → 2 < 9) |
7 | 1, 2, 6 | mp2an 690 | 1 ⊢ 2 < 9 |
Colors of variables: wff setvar class |
Syntax hints: class class class wbr 5081 < clt 11059 2c2 12078 3c3 12079 9c9 12085 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1911 ax-6 1969 ax-7 2009 ax-8 2106 ax-9 2114 ax-10 2135 ax-11 2152 ax-12 2169 ax-ext 2707 ax-sep 5232 ax-nul 5239 ax-pow 5297 ax-pr 5361 ax-un 7620 ax-resscn 10978 ax-1cn 10979 ax-icn 10980 ax-addcl 10981 ax-addrcl 10982 ax-mulcl 10983 ax-mulrcl 10984 ax-mulcom 10985 ax-addass 10986 ax-mulass 10987 ax-distr 10988 ax-i2m1 10989 ax-1ne0 10990 ax-1rid 10991 ax-rnegex 10992 ax-rrecex 10993 ax-cnre 10994 ax-pre-lttri 10995 ax-pre-lttrn 10996 ax-pre-ltadd 10997 ax-pre-mulgt0 10998 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 846 df-3or 1088 df-3an 1089 df-tru 1542 df-fal 1552 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2538 df-eu 2567 df-clab 2714 df-cleq 2728 df-clel 2814 df-nfc 2887 df-ne 2942 df-nel 3048 df-ral 3063 df-rex 3072 df-reu 3305 df-rab 3306 df-v 3439 df-sbc 3722 df-csb 3838 df-dif 3895 df-un 3897 df-in 3899 df-ss 3909 df-nul 4263 df-if 4466 df-pw 4541 df-sn 4566 df-pr 4568 df-op 4572 df-uni 4845 df-br 5082 df-opab 5144 df-mpt 5165 df-id 5500 df-po 5514 df-so 5515 df-xp 5606 df-rel 5607 df-cnv 5608 df-co 5609 df-dm 5610 df-rn 5611 df-res 5612 df-ima 5613 df-iota 6410 df-fun 6460 df-fn 6461 df-f 6462 df-f1 6463 df-fo 6464 df-f1o 6465 df-fv 6466 df-riota 7264 df-ov 7310 df-oprab 7311 df-mpo 7312 df-er 8529 df-en 8765 df-dom 8766 df-sdom 8767 df-pnf 11061 df-mnf 11062 df-xr 11063 df-ltxr 11064 df-le 11065 df-sub 11257 df-neg 11258 df-2 12086 df-3 12087 df-4 12088 df-5 12089 df-6 12090 df-7 12091 df-8 12092 df-9 12093 |
This theorem is referenced by: 1lt9 12229 tsetndxnplusgndx 17116 topgrpstr 17120 oppgtsetOLD 19008 mgptsetOLD 19780 cnfldfunALTOLD 20660 tngplusgOLD 23850 2logb9irr 25994 hgt750leme 32687 aks4d1p7d1 40290 31prm 45293 341fppr2 45430 nfermltl2rev 45439 wtgoldbnnsum4prm 45498 bgoldbnnsum3prm 45500 ackval42 46286 |
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