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| Mirrors > Home > MPE Home > Th. List > reccli | Structured version Visualization version GIF version | ||
| Description: Closure law for reciprocal. (Contributed by NM, 30-Apr-2005.) |
| Ref | Expression |
|---|---|
| divclz.1 | ⊢ 𝐴 ∈ ℂ |
| reccl.2 | ⊢ 𝐴 ≠ 0 |
| Ref | Expression |
|---|---|
| reccli | ⊢ (1 / 𝐴) ∈ ℂ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | reccl.2 | . 2 ⊢ 𝐴 ≠ 0 | |
| 2 | divclz.1 | . . 3 ⊢ 𝐴 ∈ ℂ | |
| 3 | 2 | recclzi 12035 | . 2 ⊢ (𝐴 ≠ 0 → (1 / 𝐴) ∈ ℂ) |
| 4 | 1, 3 | ax-mp 5 | 1 ⊢ (1 / 𝐴) ∈ ℂ |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∈ wcel 2145 ≠ wne 2956 (class class class)co 7418 ℂcc 11191 0cc0 11193 1c1 11194 / cdiv 11966 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7749 ax-resscn 11250 ax-1cn 11251 ax-icn 11252 ax-addcl 11253 ax-addrcl 11254 ax-mulcl 11255 ax-mulrcl 11256 ax-mulcom 11257 ax-addass 11258 ax-mulass 11259 ax-distr 11260 ax-i2m1 11261 ax-1ne0 11262 ax-1rid 11263 ax-rnegex 11264 ax-rrecex 11265 ax-cnre 11266 ax-pre-lttri 11267 ax-pre-lttrn 11268 ax-pre-ltadd 11269 ax-pre-mulgt0 11270 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5104 df-opab 5168 df-mpt 5187 df-id 5546 df-po 5559 df-so 5560 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7375 df-ov 7421 df-oprab 7422 df-mpo 7423 df-er 8710 df-en 8967 df-dom 8968 df-sdom 8969 df-pnf 11338 df-mnf 11339 df-xr 11340 df-ltxr 11341 df-le 11342 df-sub 11536 df-neg 11537 df-div 11967 |
| This theorem is used by: halfcn 12553 halfpm6th 12561 sqrecii 14319 bpoly2 16216 bpoly3 16217 bpoly4 16218 fsumcube 16219 sinhval 16315 cos01bnd 16347 cos1bnd 16348 flodddiv4 16578 dvmptim 26283 tan4thpi 26836 sincos6thpi 26837 sincos3rdpi 26838 1cubrlem 27162 1cubr 27163 cubic 27170 bposlem8 27611 pntibndlem2 27911 2sqr3minply 34405 2sqr3nconstr 34406 cos9thpiminplylem4 34410 cos9thpinconstrlem2 34415 ftc1anclem6 38596 goldrasin 47898 |
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