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Mirrors > Home > MPE Home > Th. List > nnrecre | Structured version Visualization version GIF version |
Description: The reciprocal of a positive integer is real. (Contributed by NM, 8-Feb-2008.) |
Ref | Expression |
---|---|
nnrecre | ⊢ (𝑁 ∈ ℕ → (1 / 𝑁) ∈ ℝ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 1re 10630 | . 2 ⊢ 1 ∈ ℝ | |
2 | nndivre 11666 | . 2 ⊢ ((1 ∈ ℝ ∧ 𝑁 ∈ ℕ) → (1 / 𝑁) ∈ ℝ) | |
3 | 1, 2 | mpan 689 | 1 ⊢ (𝑁 ∈ ℕ → (1 / 𝑁) ∈ ℝ) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∈ wcel 2111 (class class class)co 7135 ℝcr 10525 1c1 10527 / cdiv 11286 ℕcn 11625 |
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 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-sep 5167 ax-nul 5174 ax-pow 5231 ax-pr 5295 ax-un 7441 ax-resscn 10583 ax-1cn 10584 ax-icn 10585 ax-addcl 10586 ax-addrcl 10587 ax-mulcl 10588 ax-mulrcl 10589 ax-mulcom 10590 ax-addass 10591 ax-mulass 10592 ax-distr 10593 ax-i2m1 10594 ax-1ne0 10595 ax-1rid 10596 ax-rnegex 10597 ax-rrecex 10598 ax-cnre 10599 ax-pre-lttri 10600 ax-pre-lttrn 10601 ax-pre-ltadd 10602 ax-pre-mulgt0 10603 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2598 df-eu 2629 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-ne 2988 df-nel 3092 df-ral 3111 df-rex 3112 df-reu 3113 df-rmo 3114 df-rab 3115 df-v 3443 df-sbc 3721 df-csb 3829 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-pss 3900 df-nul 4244 df-if 4426 df-pw 4499 df-sn 4526 df-pr 4528 df-tp 4530 df-op 4532 df-uni 4801 df-iun 4883 df-br 5031 df-opab 5093 df-mpt 5111 df-tr 5137 df-id 5425 df-eprel 5430 df-po 5438 df-so 5439 df-fr 5478 df-we 5480 df-xp 5525 df-rel 5526 df-cnv 5527 df-co 5528 df-dm 5529 df-rn 5530 df-res 5531 df-ima 5532 df-pred 6116 df-ord 6162 df-on 6163 df-lim 6164 df-suc 6165 df-iota 6283 df-fun 6326 df-fn 6327 df-f 6328 df-f1 6329 df-fo 6330 df-f1o 6331 df-fv 6332 df-riota 7093 df-ov 7138 df-oprab 7139 df-mpo 7140 df-om 7561 df-wrecs 7930 df-recs 7991 df-rdg 8029 df-er 8272 df-en 8493 df-dom 8494 df-sdom 8495 df-pnf 10666 df-mnf 10667 df-xr 10668 df-ltxr 10669 df-le 10670 df-sub 10861 df-neg 10862 df-div 11287 df-nn 11626 |
This theorem is referenced by: nnrecred 11676 rpnnen1lem5 12368 fldiv 13223 supcvg 15203 harmonic 15206 rpnnen2lem11 15569 flodddiv4 15754 prmreclem4 16245 prmreclem5 16246 prmreclem6 16247 prmrec 16248 met1stc 23128 pcoass 23629 bcthlem4 23931 vitali 24217 ismbf3d 24258 itg2seq 24346 itg2gt0 24364 plyeq0lem 24807 logtayllem 25250 cxproot 25281 cxpeq 25346 quartlem3 25445 leibpi 25528 emcllem4 25584 emcllem6 25586 basellem6 25671 mulogsumlem 26115 pntpbnd2 26171 ipasslem4 28617 ipasslem5 28618 minvecolem5 28664 subfaclim 32548 faclim 33091 iccioo01 34741 poimirlem29 35086 poimirlem30 35087 xrralrecnnle 42017 xrralrecnnge 42026 iooiinicc 42179 iooiinioc 42193 stirlinglem1 42716 iinhoiicclem 43312 iunhoiioolem 43314 iccvonmbllem 43317 vonioolem1 43319 vonioolem2 43320 vonicclem1 43322 vonicclem2 43323 preimageiingt 43355 preimaleiinlt 43356 salpreimagtge 43359 salpreimaltle 43360 smflimlem6 43409 |
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