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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 11087 | . 2 ⊢ 1 ∈ ℂ | |
| 2 | div1 11835 | . 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 1542 ∈ wcel 2114 (class class class)co 7360 ℂcc 11027 1c1 11030 / cdiv 11798 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5231 ax-nul 5241 ax-pow 5302 ax-pr 5370 ax-un 7682 ax-resscn 11086 ax-1cn 11087 ax-icn 11088 ax-addcl 11089 ax-addrcl 11090 ax-mulcl 11091 ax-mulrcl 11092 ax-mulcom 11093 ax-addass 11094 ax-mulass 11095 ax-distr 11096 ax-i2m1 11097 ax-1ne0 11098 ax-1rid 11099 ax-rnegex 11100 ax-rrecex 11101 ax-cnre 11102 ax-pre-lttri 11103 ax-pre-lttrn 11104 ax-pre-ltadd 11105 ax-pre-mulgt0 11106 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-rmo 3343 df-reu 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-br 5087 df-opab 5149 df-mpt 5168 df-id 5519 df-po 5532 df-so 5533 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-riota 7317 df-ov 7363 df-oprab 7364 df-mpo 7365 df-er 8636 df-en 8887 df-dom 8888 df-sdom 8889 df-pnf 11172 df-mnf 11173 df-xr 11174 df-ltxr 11175 df-le 11176 df-sub 11370 df-neg 11371 df-div 11799 |
| This theorem is referenced by: recdiv 11852 reclt1 12042 recgt1 12043 halflt1 12385 expneg 14022 m1expcl2 14038 1exp 14044 resqrex 15203 trireciplem 15818 fproddiv 15917 ef0lem 16034 eft0val 16070 m1expaddsub 19464 gzrngunit 21423 cnmsgnsubg 21567 psgninv 21572 vitali 25590 advlogexp 26632 logtayllem 26636 efrlim 26946 efrlimOLD 26947 emcllem2 26974 emcllem7 26979 logexprlim 27202 dchrinvcl 27230 bclbnd 27257 lgseisenlem1 27352 lgseisenlem2 27353 lgsquadlem1 27357 dchrmusum2 27471 dchrvmasum2lem 27473 mulogsum 27509 pntrsumo1 27542 pnt2 27590 pnt 27591 qqh1 34145 faclimlem1 35941 faclim 35944 pellexlem2 43276 elpell1qr2 43318 bccn0 44788 binomcxplemradcnv 44797 mccl 46046 dvnprodlem3 46394 stoweidlem13 46459 stoweidlem42 46488 fourierdlem62 46614 iinhoiicclem 47119 sec0 50247 |
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