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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 12555 | . 2 ⊢ 1 < 2 | |
| 2 | 2lt4 12560 | . 2 ⊢ 2 < 4 | |
| 3 | 1re 11347 | . . 3 ⊢ 1 ∈ ℝ | |
| 4 | 2re 12457 | . . 3 ⊢ 2 ∈ ℝ | |
| 5 | 4re 12467 | . . 3 ⊢ 4 ∈ ℝ | |
| 6 | 3, 4, 5 | lttri 11475 | . 2 ⊢ ((1 < 2 ∧ 2 < 4) → 1 < 4) |
| 7 | 1, 2, 6 | mp2an 705 | 1 ⊢ 1 < 4 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: class class class wbr 5108 1c1 11240 < clt 11382 2c2 12437 4c4 12439 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5255 ax-nul 5266 ax-pow 5334 ax-pr 5398 ax-un 7783 ax-resscn 11296 ax-1cn 11297 ax-icn 11298 ax-addcl 11299 ax-addrcl 11300 ax-mulcl 11301 ax-mulrcl 11302 ax-mulcom 11303 ax-addass 11304 ax-mulass 11305 ax-distr 11306 ax-i2m1 11307 ax-1ne0 11308 ax-1rid 11309 ax-rnegex 11310 ax-rrecex 11311 ax-cnre 11312 ax-pre-lttri 11313 ax-pre-lttrn 11314 ax-pre-ltadd 11315 ax-pre-mulgt0 11316 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4841 df-uni 4873 df-br 5109 df-opab 5174 df-mpt 5193 df-id 5553 df-po 5566 df-so 5567 df-xp 5664 df-rel 5665 df-cnv 5666 df-co 5667 df-dm 5668 df-rn 5669 df-res 5670 df-ima 5671 df-iota 6520 df-fun 6568 df-fn 6569 df-f 6570 df-f1 6571 df-fo 6572 df-f1o 6573 df-fv 6574 df-riota 7408 df-ov 7454 df-oprab 7455 df-mpo 7456 df-er 8755 df-en 9012 df-dom 9013 df-sdom 9014 df-pnf 11384 df-mnf 11385 df-xr 11386 df-ltxr 11387 df-le 11388 df-sub 11582 df-neg 11583 df-2 12445 df-3 12446 df-4 12447 |
| This theorem is used by: 1lt5 12565 fldiv4p1lem1div2 14015 fldiv4lem1div2 14017 flodddiv4 16629 8nprm 17333 starvndxnbasendx 17521 slotsdifocndx 17638 m1lgs 27772 2lgslem3a 27780 2lgslem3c 27782 addsq2nreurex 27828 pntibndlem1 27973 usgrexmplef 29897 upgr4cycl4dv4e 30843 lcmineqlem 43368 aks4d1p1p7 43390 aks4d1p1p5 43391 nprmdvdsfacm1lem4 48981 4fppr1 49106 nnsum4primeseven 49171 nnsum4primesevenALTV 49172 tgblthelfgott 49186 usgrexmpl1lem 49392 usgrexmpl2lem 49397 usgrexmpl2nb1 49403 usgrexmpl2nb4 49406 usgrexmpl2trifr 49408 gpgprismgr4cycllem7 49472 gpgprismgr4cycllem10 49475 veronesev1lem 51401 veronesev4lem 51404 veronesevrowd 51407 |
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