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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 13300 | . . 3 ⊢ < Or ℝ* | |
| 2 | 1 | a1i 11 | . 2 ⊢ (𝐴 ⊆ ℝ* → < Or ℝ*) |
| 3 | xrsupss 13469 | . 2 ⊢ (𝐴 ⊆ ℝ* → ∃𝑥 ∈ ℝ* (∀𝑦 ∈ 𝐴 ¬ 𝑥 < 𝑦 ∧ ∀𝑦 ∈ ℝ* (𝑦 < 𝑥 → ∃𝑧 ∈ 𝐴 𝑦 < 𝑧))) | |
| 4 | 2, 3 | supcl 9480 | 1 ⊢ (𝐴 ⊆ ℝ* → sup(𝐴, ℝ*, < ) ∈ ℝ*) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2147 ⊆ wss 3900 Or wor 5563 supcsup 9462 ℝ*cxr 11372 < clt 11373 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5253 ax-nul 5264 ax-pow 5332 ax-pr 5396 ax-un 7778 ax-cnex 11286 ax-resscn 11287 ax-1cn 11288 ax-icn 11289 ax-addcl 11290 ax-addrcl 11291 ax-mulcl 11292 ax-mulrcl 11293 ax-mulcom 11294 ax-addass 11295 ax-mulass 11296 ax-distr 11297 ax-i2m1 11298 ax-1ne0 11299 ax-1rid 11300 ax-rnegex 11301 ax-rrecex 11302 ax-cnre 11303 ax-pre-lttri 11304 ax-pre-lttrn 11305 ax-pre-ltadd 11306 ax-pre-mulgt0 11307 ax-pre-sup 11308 |
| 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 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-br 5107 df-opab 5172 df-mpt 5191 df-id 5551 df-po 5564 df-so 5565 df-xp 5662 df-rel 5663 df-cnv 5664 df-co 5665 df-dm 5666 df-rn 5667 df-res 5668 df-ima 5669 df-iota 6515 df-fun 6563 df-fn 6564 df-f 6565 df-f1 6566 df-fo 6567 df-f1o 6568 df-fv 6569 df-riota 7403 df-ov 7449 df-oprab 7450 df-mpo 7451 df-er 8748 df-en 9005 df-dom 9006 df-sdom 9007 df-sup 9464 df-pnf 11375 df-mnf 11376 df-xr 11377 df-ltxr 11378 df-le 11379 df-sub 11573 df-neg 11574 |
| This theorem is used by: supxrun 13476 supxrmnf 13477 supxrbnd1 13481 supxrbnd2 13482 supxrub 13484 supxrleub 13486 supxrre 13487 supxrbnd 13488 supxrgtmnf 13489 supxrre1 13490 supxrre2 13491 supxrss 13492 ixxub 13527 limsupgord 15671 limsupcl 15672 limsupgf 15674 prdsdsf 24719 xpsdsval 24733 xrge0tsms 25187 elovolm 25829 ovolmge0 25831 ovolgelb 25834 ovollb2lem 25842 ovolunlem1a 25850 ovoliunlem1 25856 ovoliunlem2 25857 ovoliun 25859 ovolscalem1 25867 ovolicc1 25870 ovolicc2lem4 25874 voliunlem2 25905 voliunlem3 25906 ioombl1lem2 25913 uniioovol 25933 uniiccvol 25934 uniioombllem1 25935 uniioombllem3 25939 itg2cl 26086 itg2seq 26096 itg2monolem2 26105 itg2monolem3 26106 itg2mono 26107 mdeglt 26416 mdegxrcl 26418 radcnvcl 26777 nmoxr 31401 nmopxr 32501 nmfnxr 32514 xrofsup 33432 supxrnemnf 33433 xrge0tsmsd 33710 mblfinlem3 38782 mblfinlem4 38783 ismblfin 38784 itg2addnclem 38794 itg2gt0cn 38798 binomcxplemdvbinom 45540 binomcxplemcvg 45541 binomcxplemnotnn0 45543 supxrcld 46337 supxrgere 46560 supxrgelem 46564 supxrge 46565 suplesup 46566 suplesup2 46602 supxrcli 46659 liminfval2 46993 sge0cl 47606 sge0xaddlem1 47658 sge0xaddlem2 47659 sge0reuz 47672 |
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