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| Mirrors > Home > MPE Home > Th. List > supxrcl | Structured version Visualization version GIF version | ||
| Description: The supremum of an arbitrary set of extended reals is an extended real. (Contributed by NM, 24-Oct-2005.) |
| Ref | Expression |
|---|---|
| supxrcl | ⊢ (𝐴 ⊆ ℝ* → sup(𝐴, ℝ*, < ) ∈ ℝ*) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | xrltso 13273 | . . 3 ⊢ < Or ℝ* | |
| 2 | 1 | a1i 11 | . 2 ⊢ (𝐴 ⊆ ℝ* → < Or ℝ*) |
| 3 | xrsupss 13442 | . 2 ⊢ (𝐴 ⊆ ℝ* → ∃𝑥 ∈ ℝ* (∀𝑦 ∈ 𝐴 ¬ 𝑥 < 𝑦 ∧ ∀𝑦 ∈ ℝ* (𝑦 < 𝑥 → ∃𝑧 ∈ 𝐴 𝑦 < 𝑧))) | |
| 4 | 2, 3 | supcl 9453 | 1 ⊢ (𝐴 ⊆ ℝ* → sup(𝐴, ℝ*, < ) ∈ ℝ*) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2144 ⊆ wss 3895 Or wor 5557 supcsup 9435 ℝ*cxr 11345 < clt 11346 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7751 ax-cnex 11259 ax-resscn 11260 ax-1cn 11261 ax-icn 11262 ax-addcl 11263 ax-addrcl 11264 ax-mulcl 11265 ax-mulrcl 11266 ax-mulcom 11267 ax-addass 11268 ax-mulass 11269 ax-distr 11270 ax-i2m1 11271 ax-1ne0 11272 ax-1rid 11273 ax-rnegex 11274 ax-rrecex 11275 ax-cnre 11276 ax-pre-lttri 11277 ax-pre-lttrn 11278 ax-pre-ltadd 11279 ax-pre-mulgt0 11280 ax-pre-sup 11281 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-br 5103 df-opab 5167 df-mpt 5186 df-id 5545 df-po 5558 df-so 5559 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-riota 7377 df-ov 7423 df-oprab 7424 df-mpo 7425 df-er 8720 df-en 8977 df-dom 8978 df-sdom 8979 df-sup 9437 df-pnf 11348 df-mnf 11349 df-xr 11350 df-ltxr 11351 df-le 11352 df-sub 11546 df-neg 11547 |
| This theorem is used by: supxrun 13449 supxrmnf 13450 supxrbnd1 13454 supxrbnd2 13455 supxrub 13457 supxrleub 13459 supxrre 13460 supxrbnd 13461 supxrgtmnf 13462 supxrre1 13463 supxrre2 13464 supxrss 13465 ixxub 13500 limsupgord 15644 limsupcl 15645 limsupgf 15647 prdsdsf 24691 xpsdsval 24705 xrge0tsms 25159 elovolm 25801 ovolmge0 25803 ovolgelb 25806 ovollb2lem 25814 ovolunlem1a 25822 ovoliunlem1 25828 ovoliunlem2 25829 ovoliun 25831 ovolscalem1 25839 ovolicc1 25842 ovolicc2lem4 25846 voliunlem2 25877 voliunlem3 25878 ioombl1lem2 25885 uniioovol 25905 uniiccvol 25906 uniioombllem1 25907 uniioombllem3 25911 itg2cl 26058 itg2seq 26068 itg2monolem2 26077 itg2monolem3 26078 itg2mono 26079 mdeglt 26388 mdegxrcl 26390 radcnvcl 26749 nmoxr 31373 nmopxr 32473 nmfnxr 32486 xrofsup 33405 supxrnemnf 33406 xrge0tsmsd 33680 mblfinlem3 38670 mblfinlem4 38671 ismblfin 38672 itg2addnclem 38682 itg2gt0cn 38686 binomcxplemdvbinom 45430 binomcxplemcvg 45431 binomcxplemnotnn0 45433 supxrcld 46215 supxrgere 46438 supxrgelem 46442 supxrge 46443 suplesup 46444 suplesup2 46480 supxrcli 46537 liminfval2 46871 sge0cl 47484 sge0xaddlem1 47536 sge0xaddlem2 47537 sge0reuz 47550 |
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