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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 11092 | . 2 ⊢ 1 ∈ ℂ | |
| 2 | div1 11839 | . 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 1548 ∈ wcel 2121 (class class class)co 7359 ℂcc 11032 1c1 11035 / cdiv 11803 |
| 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 5220 ax-nul 5230 ax-pow 5296 ax-pr 5364 ax-un 7681 ax-resscn 11091 ax-1cn 11092 ax-icn 11093 ax-addcl 11094 ax-addrcl 11095 ax-mulcl 11096 ax-mulrcl 11097 ax-mulcom 11098 ax-addass 11099 ax-mulass 11100 ax-distr 11101 ax-i2m1 11102 ax-1ne0 11103 ax-1rid 11104 ax-rnegex 11105 ax-rrecex 11106 ax-cnre 11107 ax-pre-lttri 11108 ax-pre-lttrn 11109 ax-pre-ltadd 11110 ax-pre-mulgt0 11111 |
| 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-rmo 3346 df-reu 3347 df-rab 3394 df-v 3435 df-sbc 3725 df-csb 3833 df-dif 3887 df-un 3889 df-in 3891 df-ss 3901 df-nul 4264 df-if 4457 df-pw 4533 df-sn 4558 df-pr 4560 df-op 4564 df-uni 4841 df-br 5075 df-opab 5137 df-mpt 5156 df-id 5515 df-po 5528 df-so 5529 df-xp 5626 df-rel 5627 df-cnv 5628 df-co 5629 df-dm 5630 df-rn 5631 df-res 5632 df-ima 5633 df-iota 6444 df-fun 6490 df-fn 6491 df-f 6492 df-f1 6493 df-fo 6494 df-f1o 6495 df-fv 6496 df-riota 7316 df-ov 7362 df-oprab 7363 df-mpo 7364 df-er 8637 df-en 8888 df-dom 8889 df-sdom 8890 df-pnf 11177 df-mnf 11178 df-xr 11179 df-ltxr 11180 df-le 11181 df-sub 11375 df-neg 11376 df-div 11804 |
| This theorem is referenced by: recdiv 11856 reclt1 12046 recgt1 12047 halflt1 12389 expneg 14026 m1expcl2 14042 1exp 14048 resqrex 15207 trireciplem 15822 fproddiv 15921 ef0lem 16038 eft0val 16074 m1expaddsub 19467 gzrngunit 21411 cnmsgnsubg 21555 psgninv 21560 vitali 25601 advlogexp 26640 logtayllem 26644 efrlim 26954 emcllem2 26981 emcllem7 26986 logexprlim 27209 dchrinvcl 27237 bclbnd 27264 lgseisenlem1 27359 lgseisenlem2 27360 lgsquadlem1 27364 dchrmusum2 27478 dchrvmasum2lem 27480 mulogsum 27516 pntrsumo1 27549 pnt2 27597 pnt 27598 qqh1 34179 faclimlem1 35984 faclim 35987 pellexlem2 43288 elpell1qr2 43330 bccn0 44800 binomcxplemradcnv 44809 mccl 46055 dvnprodlem3 46403 stoweidlem13 46468 stoweidlem42 46497 fourierdlem62 46623 iinhoiicclem 47128 sec0 50262 |
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