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| Mirrors > Home > MPE Home > Th. List > 3lt7 | Structured version Visualization version GIF version | ||
| Description: 3 is less than 7. (Contributed by Mario Carneiro, 15-Sep-2013.) |
| Ref | Expression |
|---|---|
| 3lt7 | ⊢ 3 < 7 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 3lt4 12422 | . 2 ⊢ 3 < 4 | |
| 2 | 4lt7 12436 | . 2 ⊢ 4 < 7 | |
| 3 | 3re 12328 | . . 3 ⊢ 3 ∈ ℝ | |
| 4 | 4re 12332 | . . 3 ⊢ 4 ∈ ℝ | |
| 5 | 7re 12341 | . . 3 ⊢ 7 ∈ ℝ | |
| 6 | 3, 4, 5 | lttri 11369 | . 2 ⊢ ((3 < 4 ∧ 4 < 7) → 3 < 7) |
| 7 | 1, 2, 6 | mp2an 692 | 1 ⊢ 3 < 7 |
| Colors of variables: wff setvar class |
| Syntax hints: class class class wbr 5123 < clt 11277 3c3 12304 4c4 12305 7c7 12308 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1794 ax-4 1808 ax-5 1909 ax-6 1966 ax-7 2006 ax-8 2109 ax-9 2117 ax-10 2140 ax-11 2156 ax-12 2176 ax-ext 2706 ax-sep 5276 ax-nul 5286 ax-pow 5345 ax-pr 5412 ax-un 7737 ax-resscn 11194 ax-1cn 11195 ax-icn 11196 ax-addcl 11197 ax-addrcl 11198 ax-mulcl 11199 ax-mulrcl 11200 ax-mulcom 11201 ax-addass 11202 ax-mulass 11203 ax-distr 11204 ax-i2m1 11205 ax-1ne0 11206 ax-1rid 11207 ax-rnegex 11208 ax-rrecex 11209 ax-cnre 11210 ax-pre-lttri 11211 ax-pre-lttrn 11212 ax-pre-ltadd 11213 ax-pre-mulgt0 11214 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1779 df-nf 1783 df-sb 2064 df-mo 2538 df-eu 2567 df-clab 2713 df-cleq 2726 df-clel 2808 df-nfc 2884 df-ne 2932 df-nel 3036 df-ral 3051 df-rex 3060 df-reu 3364 df-rab 3420 df-v 3465 df-sbc 3771 df-csb 3880 df-dif 3934 df-un 3936 df-in 3938 df-ss 3948 df-nul 4314 df-if 4506 df-pw 4582 df-sn 4607 df-pr 4609 df-op 4613 df-uni 4888 df-br 5124 df-opab 5186 df-mpt 5206 df-id 5558 df-po 5572 df-so 5573 df-xp 5671 df-rel 5672 df-cnv 5673 df-co 5674 df-dm 5675 df-rn 5676 df-res 5677 df-ima 5678 df-iota 6494 df-fun 6543 df-fn 6544 df-f 6545 df-f1 6546 df-fo 6547 df-f1o 6548 df-fv 6549 df-riota 7370 df-ov 7416 df-oprab 7417 df-mpo 7418 df-er 8727 df-en 8968 df-dom 8969 df-sdom 8970 df-pnf 11279 df-mnf 11280 df-xr 11281 df-ltxr 11282 df-le 11283 df-sub 11476 df-neg 11477 df-2 12311 df-3 12312 df-4 12313 df-5 12314 df-6 12315 df-7 12316 |
| This theorem is referenced by: 2lt7 12438 2lgslem3 27384 |
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