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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 11192 | . 2 ⊢ 1 ∈ ℂ | |
| 2 | div1 11936 | . 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 7410 ℂcc 11132 1c1 11135 / cdiv 11899 |
| 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 2708 ax-sep 5271 ax-nul 5281 ax-pow 5340 ax-pr 5407 ax-un 7734 ax-resscn 11191 ax-1cn 11192 ax-icn 11193 ax-addcl 11194 ax-addrcl 11195 ax-mulcl 11196 ax-mulrcl 11197 ax-mulcom 11198 ax-addass 11199 ax-mulass 11200 ax-distr 11201 ax-i2m1 11202 ax-1ne0 11203 ax-1rid 11204 ax-rnegex 11205 ax-rrecex 11206 ax-cnre 11207 ax-pre-lttri 11208 ax-pre-lttrn 11209 ax-pre-ltadd 11210 ax-pre-mulgt0 11211 |
| 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 2540 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2810 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3062 df-rmo 3364 df-reu 3365 df-rab 3421 df-v 3466 df-sbc 3771 df-csb 3880 df-dif 3934 df-un 3936 df-in 3938 df-ss 3948 df-nul 4314 df-if 4506 df-pw 4582 df-sn 4607 df-pr 4609 df-op 4613 df-uni 4889 df-br 5125 df-opab 5187 df-mpt 5207 df-id 5553 df-po 5566 df-so 5567 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-iota 6489 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7367 df-ov 7413 df-oprab 7414 df-mpo 7415 df-er 8724 df-en 8965 df-dom 8966 df-sdom 8967 df-pnf 11276 df-mnf 11277 df-xr 11278 df-ltxr 11279 df-le 11280 df-sub 11473 df-neg 11474 df-div 11900 |
| This theorem is referenced by: recdiv 11952 reclt1 12142 recgt1 12143 halflt1 12463 expneg 14092 m1expcl2 14108 1exp 14114 resqrex 15274 trireciplem 15883 fproddiv 15982 ef0lem 16099 eft0val 16135 m1expaddsub 19484 gzrngunit 21406 cnmsgnsubg 21542 psgninv 21547 vitali 25571 advlogexp 26621 logtayllem 26625 efrlim 26936 efrlimOLD 26937 emcllem2 26964 emcllem7 26969 logexprlim 27193 dchrinvcl 27221 bclbnd 27248 lgseisenlem1 27343 lgseisenlem2 27344 lgsquadlem1 27348 dchrmusum2 27462 dchrvmasum2lem 27464 mulogsum 27500 pntrsumo1 27533 pnt2 27581 pnt 27582 qqh1 34021 faclimlem1 35765 faclim 35768 pellexlem2 42820 elpell1qr2 42862 bccn0 44334 binomcxplemradcnv 44343 mccl 45594 dvnprodlem3 45944 stoweidlem13 46009 stoweidlem42 46038 fourierdlem62 46164 iinhoiicclem 46669 sec0 49591 |
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