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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 12428 | . 2 ⊢ 1 < 2 | |
| 2 | 2lt4 12433 | . 2 ⊢ 2 < 4 | |
| 3 | 1re 11223 | . . 3 ⊢ 1 ∈ ℝ | |
| 4 | 2re 12330 | . . 3 ⊢ 2 ∈ ℝ | |
| 5 | 4re 12340 | . . 3 ⊢ 4 ∈ ℝ | |
| 6 | 3, 4, 5 | lttri 11351 | . 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 5111 1c1 11116 < clt 11258 2c2 12310 4c4 12312 |
| 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 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 ax-sep 5259 ax-nul 5271 ax-pow 5338 ax-pr 5406 ax-un 7742 ax-resscn 11172 ax-1cn 11173 ax-icn 11174 ax-addcl 11175 ax-addrcl 11176 ax-mulcl 11177 ax-mulrcl 11178 ax-mulcom 11179 ax-addass 11180 ax-mulass 11181 ax-distr 11182 ax-i2m1 11183 ax-1ne0 11184 ax-1rid 11185 ax-rnegex 11186 ax-rrecex 11187 ax-cnre 11188 ax-pre-lttri 11189 ax-pre-lttrn 11190 ax-pre-ltadd 11191 ax-pre-mulgt0 11192 |
| 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 2100 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-nel 3067 df-ral 3082 df-rex 3092 df-reu 3372 df-rab 3419 df-v 3459 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4287 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-br 5112 df-opab 5176 df-mpt 5195 df-id 5558 df-po 5571 df-so 5572 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-riota 7376 df-ov 7422 df-oprab 7423 df-mpo 7424 df-er 8700 df-en 8950 df-dom 8951 df-sdom 8952 df-pnf 11260 df-mnf 11261 df-xr 11262 df-ltxr 11263 df-le 11264 df-sub 11458 df-neg 11459 df-2 12318 df-3 12319 df-4 12320 |
| This theorem is used by: 1lt5 12438 fldiv4p1lem1div2 13886 fldiv4lem1div2 13888 flodddiv4 16495 8nprm 17193 starvndxnbasendx 17379 slotsdifocndx 17492 m1lgs 27603 2lgslem3a 27611 2lgslem3c 27613 addsq2nreurex 27659 pntibndlem1 27804 usgrexmplef 29667 upgr4cycl4dv4e 30607 lcmineqlem 42877 aks4d1p1p7 42899 aks4d1p1p5 42900 nprmdvdsfacm1lem4 48433 4fppr1 48558 nnsum4primeseven 48623 nnsum4primesevenALTV 48624 tgblthelfgott 48638 usgrexmpl1lem 48844 usgrexmpl2lem 48849 usgrexmpl2nb1 48855 usgrexmpl2nb4 48858 usgrexmpl2trifr 48860 gpgprismgr4cycllem7 48924 gpgprismgr4cycllem10 48927 |
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