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| Mirrors > Home > MPE Home > Th. List > rerpdivcl | Structured version Visualization version GIF version | ||
| Description: Closure law for division of a real by a positive real. (Contributed by NM, 10-Nov-2008.) |
| Ref | Expression |
|---|---|
| rerpdivcl | ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ+) → (𝐴 / 𝐵) ∈ ℝ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | rprene0 13139 | . 2 ⊢ (𝐵 ∈ ℝ+ → (𝐵 ∈ ℝ ∧ 𝐵 ≠ 0)) | |
| 2 | redivcl 12037 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐵 ≠ 0) → (𝐴 / 𝐵) ∈ ℝ) | |
| 3 | 2 | 3expb 1138 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ (𝐵 ∈ ℝ ∧ 𝐵 ≠ 0)) → (𝐴 / 𝐵) ∈ ℝ) |
| 4 | 1, 3 | sylan2 605 | 1 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ+) → (𝐴 / 𝐵) ∈ ℝ) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ∈ wcel 2145 ≠ wne 2956 (class class class)co 7421 ℝcr 11200 0cc0 11201 / cdiv 11974 ℝ+crp 13121 |
| 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 7752 ax-resscn 11258 ax-1cn 11259 ax-icn 11260 ax-addcl 11261 ax-addrcl 11262 ax-mulcl 11263 ax-mulrcl 11264 ax-mulcom 11265 ax-addass 11266 ax-mulass 11267 ax-distr 11268 ax-i2m1 11269 ax-1ne0 11270 ax-1rid 11271 ax-rnegex 11272 ax-rrecex 11273 ax-cnre 11274 ax-pre-lttri 11275 ax-pre-lttrn 11276 ax-pre-ltadd 11277 ax-pre-mulgt0 11278 |
| 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 3900 df-un 3902 df-in 3904 df-ss 3915 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 6495 df-fun 6541 df-fn 6542 df-f 6543 df-f1 6544 df-fo 6545 df-f1o 6546 df-fv 6547 df-riota 7378 df-ov 7424 df-oprab 7425 df-mpo 7426 df-er 8718 df-en 8975 df-dom 8976 df-sdom 8977 df-pnf 11346 df-mnf 11347 df-xr 11348 df-ltxr 11349 df-le 11350 df-sub 11544 df-neg 11545 df-div 11975 df-rp 13122 |
| This theorem is used by: ledivge1le 13194 rerpdivcld 13196 icccntr 13624 refldivcl 13964 fldivle 13972 ltdifltdiv 13975 modvalr 14013 flpmodeq 14015 mod0 14017 negmod0 14019 modlt 14021 moddiffl 14023 moddifz 14024 modid 14037 modcyc 14047 modadd1 14049 modmul1 14068 moddi 14083 modsubdir 14084 modirr 14086 sqrtdiv 15433 divrcnv 16022 gexdvds 19799 aaliou3lem8 26673 logdivlt 26950 cxp2limlem 27304 harmonicbnd4 27339 logexprlim 27553 bposlem7 27618 bposlem9 27620 chebbnd1lem3 27799 chebbnd1 27800 chto1ub 27804 chpo1ub 27808 vmadivsum 27810 rplogsumlem1 27812 dchrvmasumlema 27828 dchrvmasumiflem1 27829 dchrisum0fno1 27839 mulogsumlem 27859 logdivsum 27861 mulog2sumlem1 27862 selberg2lem 27878 selberg3lem1 27885 pntrmax 27892 pntpbnd1a 27913 pntpbnd1 27914 pntpbnd2 27915 pntpbnd 27916 pntibndlem3 27920 pntlem3 27937 pntleml 27939 pnt2 27941 subfacval3 35955 heiborlem6 38752 fldivmod 48415 ceildivmod 48416 |
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