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| Mirrors > Home > MPE Home > Th. List > 1lt4 | Structured version Visualization version GIF version | ||
| Description: 1 is less than 4. (Contributed by Mario Carneiro, 15-Sep-2013.) |
| Ref | Expression |
|---|---|
| 1lt4 | ⊢ 1 < 4 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 1lt2 12412 | . 2 ⊢ 1 < 2 | |
| 2 | 2lt4 12417 | . 2 ⊢ 2 < 4 | |
| 3 | 1re 11207 | . . 3 ⊢ 1 ∈ ℝ | |
| 4 | 2re 12314 | . . 3 ⊢ 2 ∈ ℝ | |
| 5 | 4re 12324 | . . 3 ⊢ 4 ∈ ℝ | |
| 6 | 3, 4, 5 | lttri 11335 | . 2 ⊢ ((1 < 2 ∧ 2 < 4) → 1 < 4) |
| 7 | 1, 2, 6 | mp2an 704 | 1 ⊢ 1 < 4 |
| Colors of variables: wff setvar class |
| Syntax hints: class class class wbr 5113 1c1 11100 < clt 11242 2c2 12294 4c4 12296 |
| 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 5261 ax-nul 5271 ax-pow 5337 ax-pr 5405 ax-un 7733 ax-resscn 11156 ax-1cn 11157 ax-icn 11158 ax-addcl 11159 ax-addrcl 11160 ax-mulcl 11161 ax-mulrcl 11162 ax-mulcom 11163 ax-addass 11164 ax-mulass 11165 ax-distr 11166 ax-i2m1 11167 ax-1ne0 11168 ax-1rid 11169 ax-rnegex 11170 ax-rrecex 11171 ax-cnre 11172 ax-pre-lttri 11173 ax-pre-lttrn 11174 ax-pre-ltadd 11175 ax-pre-mulgt0 11176 |
| 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 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4877 df-br 5114 df-opab 5178 df-mpt 5197 df-id 5557 df-po 5570 df-so 5571 df-xp 5668 df-rel 5669 df-cnv 5670 df-co 5671 df-dm 5672 df-rn 5673 df-res 5674 df-ima 5675 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7368 df-ov 7414 df-oprab 7415 df-mpo 7416 df-er 8693 df-en 8943 df-dom 8944 df-sdom 8945 df-pnf 11244 df-mnf 11245 df-xr 11246 df-ltxr 11247 df-le 11248 df-sub 11442 df-neg 11443 df-2 12302 df-3 12303 df-4 12304 |
| This theorem is referenced by: 1lt5 12422 fldiv4p1lem1div2 13867 fldiv4lem1div2 13869 flodddiv4 16472 8nprm 17170 starvndxnbasendx 17356 slotsdifocndx 17469 m1lgs 27517 2lgslem3a 27525 2lgslem3c 27527 addsq2nreurex 27573 pntibndlem1 27718 usgrexmplef 29549 upgr4cycl4dv4e 30476 lcmineqlem 42708 aks4d1p1p7 42730 aks4d1p1p5 42731 nprmdvdsfacm1lem4 48263 4fppr1 48388 nnsum4primeseven 48453 nnsum4primesevenALTV 48454 tgblthelfgott 48468 usgrexmpl1lem 48674 usgrexmpl2lem 48679 usgrexmpl2nb1 48685 usgrexmpl2nb4 48688 usgrexmpl2trifr 48690 gpgprismgr4cycllem7 48754 gpgprismgr4cycllem10 48757 |
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