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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 12352 | . 2 ⊢ 1 < 2 | |
| 2 | 2lt4 12356 | . 2 ⊢ 2 < 4 | |
| 3 | 1re 11174 | . . 3 ⊢ 1 ∈ ℝ | |
| 4 | 2re 12260 | . . 3 ⊢ 2 ∈ ℝ | |
| 5 | 4re 12270 | . . 3 ⊢ 4 ∈ ℝ | |
| 6 | 3, 4, 5 | lttri 11300 | . 2 ⊢ ((1 < 2 ∧ 2 < 4) → 1 < 4) |
| 7 | 1, 2, 6 | mp2an 692 | 1 ⊢ 1 < 4 |
| Colors of variables: wff setvar class |
| Syntax hints: class class class wbr 5107 1c1 11069 < clt 11208 2c2 12241 4c4 12243 |
| 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 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-sep 5251 ax-nul 5261 ax-pow 5320 ax-pr 5387 ax-un 7711 ax-resscn 11125 ax-1cn 11126 ax-icn 11127 ax-addcl 11128 ax-addrcl 11129 ax-mulcl 11130 ax-mulrcl 11131 ax-mulcom 11132 ax-addass 11133 ax-mulass 11134 ax-distr 11135 ax-i2m1 11136 ax-1ne0 11137 ax-1rid 11138 ax-rnegex 11139 ax-rrecex 11140 ax-cnre 11141 ax-pre-lttri 11142 ax-pre-lttrn 11143 ax-pre-ltadd 11144 ax-pre-mulgt0 11145 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-nel 3030 df-ral 3045 df-rex 3054 df-reu 3355 df-rab 3406 df-v 3449 df-sbc 3754 df-csb 3863 df-dif 3917 df-un 3919 df-in 3921 df-ss 3931 df-nul 4297 df-if 4489 df-pw 4565 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4872 df-br 5108 df-opab 5170 df-mpt 5189 df-id 5533 df-po 5546 df-so 5547 df-xp 5644 df-rel 5645 df-cnv 5646 df-co 5647 df-dm 5648 df-rn 5649 df-res 5650 df-ima 5651 df-iota 6464 df-fun 6513 df-fn 6514 df-f 6515 df-f1 6516 df-fo 6517 df-f1o 6518 df-fv 6519 df-riota 7344 df-ov 7390 df-oprab 7391 df-mpo 7392 df-er 8671 df-en 8919 df-dom 8920 df-sdom 8921 df-pnf 11210 df-mnf 11211 df-xr 11212 df-ltxr 11213 df-le 11214 df-sub 11407 df-neg 11408 df-2 12249 df-3 12250 df-4 12251 |
| This theorem is referenced by: 1lt5 12361 fldiv4p1lem1div2 13797 fldiv4lem1div2 13799 flodddiv4 16385 8nprm 17082 starvndxnbasendx 17267 slotsdifocndx 17380 m1lgs 27299 2lgslem3a 27307 2lgslem3c 27309 addsq2nreurex 27355 pntibndlem1 27500 usgrexmplef 29186 upgr4cycl4dv4e 30114 lcmineqlem 42040 aks4d1p1p7 42062 aks4d1p1p5 42063 4fppr1 47736 nnsum4primeseven 47801 nnsum4primesevenALTV 47802 tgblthelfgott 47816 usgrexmpl1lem 48012 usgrexmpl2lem 48017 usgrexmpl2nb1 48023 usgrexmpl2nb4 48026 usgrexmpl2trifr 48028 gpgprismgr4cycllem7 48091 gpgprismgr4cycllem10 48094 |
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