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| Mirrors > Home > MPE Home > Th. List > 1div1e1 | Structured version Visualization version GIF version | ||
| Description: 1 divided by 1 is 1. (Contributed by David A. Wheeler, 7-Dec-2018.) |
| Ref | Expression |
|---|---|
| 1div1e1 | ⊢ (1 / 1) = 1 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-1cn 11102 | . 2 ⊢ 1 ∈ ℂ | |
| 2 | div1 11848 | . 2 ⊢ (1 ∈ ℂ → (1 / 1) = 1) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ (1 / 1) = 1 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1540 ∈ wcel 2109 (class class class)co 7369 ℂcc 11042 1c1 11045 / cdiv 11811 |
| 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 5246 ax-nul 5256 ax-pow 5315 ax-pr 5382 ax-un 7691 ax-resscn 11101 ax-1cn 11102 ax-icn 11103 ax-addcl 11104 ax-addrcl 11105 ax-mulcl 11106 ax-mulrcl 11107 ax-mulcom 11108 ax-addass 11109 ax-mulass 11110 ax-distr 11111 ax-i2m1 11112 ax-1ne0 11113 ax-1rid 11114 ax-rnegex 11115 ax-rrecex 11116 ax-cnre 11117 ax-pre-lttri 11118 ax-pre-lttrn 11119 ax-pre-ltadd 11120 ax-pre-mulgt0 11121 |
| 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-rmo 3351 df-reu 3352 df-rab 3403 df-v 3446 df-sbc 3751 df-csb 3860 df-dif 3914 df-un 3916 df-in 3918 df-ss 3928 df-nul 4293 df-if 4485 df-pw 4561 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4868 df-br 5103 df-opab 5165 df-mpt 5184 df-id 5526 df-po 5539 df-so 5540 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-iota 6452 df-fun 6501 df-fn 6502 df-f 6503 df-f1 6504 df-fo 6505 df-f1o 6506 df-fv 6507 df-riota 7326 df-ov 7372 df-oprab 7373 df-mpo 7374 df-er 8648 df-en 8896 df-dom 8897 df-sdom 8898 df-pnf 11186 df-mnf 11187 df-xr 11188 df-ltxr 11189 df-le 11190 df-sub 11383 df-neg 11384 df-div 11812 |
| This theorem is referenced by: recdiv 11864 reclt1 12054 recgt1 12055 halflt1 12375 expneg 14010 m1expcl2 14026 1exp 14032 resqrex 15192 trireciplem 15804 fproddiv 15903 ef0lem 16020 eft0val 16056 m1expaddsub 19404 gzrngunit 21326 cnmsgnsubg 21462 psgninv 21467 vitali 25490 advlogexp 26540 logtayllem 26544 efrlim 26855 efrlimOLD 26856 emcllem2 26883 emcllem7 26888 logexprlim 27112 dchrinvcl 27140 bclbnd 27167 lgseisenlem1 27262 lgseisenlem2 27263 lgsquadlem1 27267 dchrmusum2 27381 dchrvmasum2lem 27383 mulogsum 27419 pntrsumo1 27452 pnt2 27500 pnt 27501 qqh1 33948 faclimlem1 35703 faclim 35706 pellexlem2 42791 elpell1qr2 42833 bccn0 44305 binomcxplemradcnv 44314 mccl 45569 dvnprodlem3 45919 stoweidlem13 45984 stoweidlem42 46013 fourierdlem62 46139 iinhoiicclem 46644 sec0 49722 |
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