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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 12342 | . 2 ⊢ 1 < 2 | |
| 2 | 2lt4 12346 | . 2 ⊢ 2 < 4 | |
| 3 | 1re 11139 | . . 3 ⊢ 1 ∈ ℝ | |
| 4 | 2re 12250 | . . 3 ⊢ 2 ∈ ℝ | |
| 5 | 4re 12260 | . . 3 ⊢ 4 ∈ ℝ | |
| 6 | 3, 4, 5 | lttri 11267 | . 2 ⊢ ((1 < 2 ∧ 2 < 4) → 1 < 4) |
| 7 | 1, 2, 6 | mp2an 699 | 1 ⊢ 1 < 4 |
| Colors of variables: wff setvar class |
| Syntax hints: class class class wbr 5075 1c1 11034 < clt 11174 2c2 12231 4c4 12233 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-10 2154 ax-11 2170 ax-12 2191 ax-ext 2713 ax-sep 5221 ax-nul 5231 ax-pow 5297 ax-pr 5365 ax-un 7682 ax-resscn 11090 ax-1cn 11091 ax-icn 11092 ax-addcl 11093 ax-addrcl 11094 ax-mulcl 11095 ax-mulrcl 11096 ax-mulcom 11097 ax-addass 11098 ax-mulass 11099 ax-distr 11100 ax-i2m1 11101 ax-1ne0 11102 ax-1rid 11103 ax-rnegex 11104 ax-rrecex 11105 ax-cnre 11106 ax-pre-lttri 11107 ax-pre-lttrn 11108 ax-pre-ltadd 11109 ax-pre-mulgt0 11110 |
| This theorem depends on definitions: df-bi 209 df-an 398 df-or 855 df-3or 1094 df-3an 1095 df-tru 1551 df-fal 1561 df-ex 1788 df-nf 1792 df-sb 2075 df-mo 2545 df-eu 2575 df-clab 2720 df-cleq 2733 df-clel 2816 df-nfc 2890 df-ne 2937 df-nel 3041 df-ral 3056 df-rex 3066 df-reu 3347 df-rab 3394 df-v 3435 df-sbc 3726 df-csb 3834 df-dif 3888 df-un 3890 df-in 3892 df-ss 3902 df-nul 4265 df-if 4458 df-pw 4534 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4842 df-br 5076 df-opab 5138 df-mpt 5157 df-id 5516 df-po 5529 df-so 5530 df-xp 5627 df-rel 5628 df-cnv 5629 df-co 5630 df-dm 5631 df-rn 5632 df-res 5633 df-ima 5634 df-iota 6445 df-fun 6491 df-fn 6492 df-f 6493 df-f1 6494 df-fo 6495 df-f1o 6496 df-fv 6497 df-riota 7317 df-ov 7363 df-oprab 7364 df-mpo 7365 df-er 8637 df-en 8888 df-dom 8889 df-sdom 8890 df-pnf 11176 df-mnf 11177 df-xr 11178 df-ltxr 11179 df-le 11180 df-sub 11374 df-neg 11375 df-2 12239 df-3 12240 df-4 12241 |
| This theorem is referenced by: 1lt5 12351 fldiv4p1lem1div2 13789 fldiv4lem1div2 13791 flodddiv4 16379 8nprm 17077 starvndxnbasendx 17262 slotsdifocndx 17375 m1lgs 27373 2lgslem3a 27381 2lgslem3c 27383 addsq2nreurex 27429 pntibndlem1 27574 usgrexmplef 29350 upgr4cycl4dv4e 30277 lcmineqlem 42552 aks4d1p1p7 42574 aks4d1p1p5 42575 nprmdvdsfacm1lem4 48115 4fppr1 48240 nnsum4primeseven 48305 nnsum4primesevenALTV 48306 tgblthelfgott 48320 usgrexmpl1lem 48526 usgrexmpl2lem 48531 usgrexmpl2nb1 48537 usgrexmpl2nb4 48540 usgrexmpl2trifr 48542 gpgprismgr4cycllem7 48606 gpgprismgr4cycllem10 48609 |
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