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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 13196 | . . 3 ⊢ < Or ℝ* | |
| 2 | 1 | a1i 11 | . 2 ⊢ (𝐴 ⊆ ℝ* → < Or ℝ*) |
| 3 | xrsupss 13365 | . 2 ⊢ (𝐴 ⊆ ℝ* → ∃𝑥 ∈ ℝ* (∀𝑦 ∈ 𝐴 ¬ 𝑥 < 𝑦 ∧ ∀𝑦 ∈ ℝ* (𝑦 < 𝑥 → ∃𝑧 ∈ 𝐴 𝑦 < 𝑧))) | |
| 4 | 2, 3 | supcl 9432 | 1 ⊢ (𝐴 ⊆ ℝ* → sup(𝐴, ℝ*, < ) ∈ ℝ*) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2145 ⊆ wss 3902 Or wor 5566 supcsup 9414 ℝ*cxr 11270 < clt 11271 |
| 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 2215 ax-ext 2734 ax-sep 5255 ax-nul 5267 ax-pow 5334 ax-pr 5402 ax-un 7740 ax-cnex 11184 ax-resscn 11185 ax-1cn 11186 ax-icn 11187 ax-addcl 11188 ax-addrcl 11189 ax-mulcl 11190 ax-mulrcl 11191 ax-mulcom 11192 ax-addass 11193 ax-mulass 11194 ax-distr 11195 ax-i2m1 11196 ax-1ne0 11197 ax-1rid 11198 ax-rnegex 11199 ax-rrecex 11200 ax-cnre 11201 ax-pre-lttri 11202 ax-pre-lttrn 11203 ax-pre-ltadd 11204 ax-pre-mulgt0 11205 ax-pre-sup 11206 |
| 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 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3064 df-ral 3079 df-rex 3089 df-rmo 3367 df-reu 3368 df-rab 3415 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-br 5108 df-opab 5172 df-mpt 5191 df-id 5554 df-po 5567 df-so 5568 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 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 7374 df-ov 7420 df-oprab 7421 df-mpo 7422 df-er 8700 df-en 8957 df-dom 8958 df-sdom 8959 df-sup 9416 df-pnf 11273 df-mnf 11274 df-xr 11275 df-ltxr 11276 df-le 11277 df-sub 11471 df-neg 11472 |
| This theorem is used by: supxrun 13372 supxrmnf 13373 supxrbnd1 13377 supxrbnd2 13378 supxrub 13380 supxrleub 13382 supxrre 13383 supxrbnd 13384 supxrgtmnf 13385 supxrre1 13386 supxrre2 13387 supxrss 13388 ixxub 13423 limsupgord 15563 limsupcl 15564 limsupgf 15566 prdsdsf 24599 xpsdsval 24613 xrge0tsms 25067 elovolm 25709 ovolmge0 25711 ovolgelb 25714 ovollb2lem 25722 ovolunlem1a 25730 ovoliunlem1 25736 ovoliunlem2 25737 ovoliun 25739 ovolscalem1 25747 ovolicc1 25750 ovolicc2lem4 25754 voliunlem2 25785 voliunlem3 25786 ioombl1lem2 25793 uniioovol 25813 uniiccvol 25814 uniioombllem1 25815 uniioombllem3 25819 itg2cl 25966 itg2seq 25976 itg2monolem2 25985 itg2monolem3 25986 itg2mono 25987 mdeglt 26297 mdegxrcl 26299 radcnvcl 26660 nmoxr 31255 nmopxr 32355 nmfnxr 32368 xrofsup 33246 supxrnemnf 33247 xrge0tsmsd 33521 mblfinlem3 38416 mblfinlem4 38417 ismblfin 38418 itg2addnclem 38428 itg2gt0cn 38432 binomcxplemdvbinom 45185 binomcxplemcvg 45186 binomcxplemnotnn0 45188 supxrcld 45947 supxrgere 46171 supxrgelem 46175 supxrge 46176 suplesup 46177 suplesup2 46213 supxrcli 46270 liminfval2 46604 sge0cl 47217 sge0xaddlem1 47269 sge0xaddlem2 47270 sge0reuz 47283 |
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