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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 11213 | . 2 ⊢ 1 ∈ ℂ | |
| 2 | div1 11957 | . 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 2108 (class class class)co 7431 ℂcc 11153 1c1 11156 / cdiv 11920 |
| 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 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2157 ax-12 2177 ax-ext 2708 ax-sep 5296 ax-nul 5306 ax-pow 5365 ax-pr 5432 ax-un 7755 ax-resscn 11212 ax-1cn 11213 ax-icn 11214 ax-addcl 11215 ax-addrcl 11216 ax-mulcl 11217 ax-mulrcl 11218 ax-mulcom 11219 ax-addass 11220 ax-mulass 11221 ax-distr 11222 ax-i2m1 11223 ax-1ne0 11224 ax-1rid 11225 ax-rnegex 11226 ax-rrecex 11227 ax-cnre 11228 ax-pre-lttri 11229 ax-pre-lttrn 11230 ax-pre-ltadd 11231 ax-pre-mulgt0 11232 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2065 df-mo 2540 df-eu 2569 df-clab 2715 df-cleq 2729 df-clel 2816 df-nfc 2892 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rmo 3380 df-reu 3381 df-rab 3437 df-v 3482 df-sbc 3789 df-csb 3900 df-dif 3954 df-un 3956 df-in 3958 df-ss 3968 df-nul 4334 df-if 4526 df-pw 4602 df-sn 4627 df-pr 4629 df-op 4633 df-uni 4908 df-br 5144 df-opab 5206 df-mpt 5226 df-id 5578 df-po 5592 df-so 5593 df-xp 5691 df-rel 5692 df-cnv 5693 df-co 5694 df-dm 5695 df-rn 5696 df-res 5697 df-ima 5698 df-iota 6514 df-fun 6563 df-fn 6564 df-f 6565 df-f1 6566 df-fo 6567 df-f1o 6568 df-fv 6569 df-riota 7388 df-ov 7434 df-oprab 7435 df-mpo 7436 df-er 8745 df-en 8986 df-dom 8987 df-sdom 8988 df-pnf 11297 df-mnf 11298 df-xr 11299 df-ltxr 11300 df-le 11301 df-sub 11494 df-neg 11495 df-div 11921 |
| This theorem is referenced by: recdiv 11973 reclt1 12163 recgt1 12164 halflt1 12484 expneg 14110 m1expcl2 14126 1exp 14132 resqrex 15289 trireciplem 15898 fproddiv 15997 ef0lem 16114 eft0val 16148 m1expaddsub 19516 gzrngunit 21451 cnmsgnsubg 21595 psgninv 21600 vitali 25648 advlogexp 26697 logtayllem 26701 efrlim 27012 efrlimOLD 27013 emcllem2 27040 emcllem7 27045 logexprlim 27269 dchrinvcl 27297 bclbnd 27324 lgseisenlem1 27419 lgseisenlem2 27420 lgsquadlem1 27424 dchrmusum2 27538 dchrvmasum2lem 27540 mulogsum 27576 pntrsumo1 27609 pnt2 27657 pnt 27658 qqh1 33986 faclimlem1 35743 faclim 35746 pellexlem2 42841 elpell1qr2 42883 bccn0 44362 binomcxplemradcnv 44371 mccl 45613 dvnprodlem3 45963 stoweidlem13 46028 stoweidlem42 46057 fourierdlem62 46183 iinhoiicclem 46688 sec0 49279 |
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