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| Mirrors > Home > MPE Home > Th. List > supxrub | Structured version Visualization version GIF version | ||
| Description: A member of a set of extended reals is less than or equal to the set's supremum. (Contributed by NM, 7-Feb-2006.) |
| Ref | Expression |
|---|---|
| supxrub | ⊢ ((𝐴 ⊆ ℝ* ∧ 𝐵 ∈ 𝐴) → 𝐵 ≤ sup(𝐴, ℝ*, < )) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ssel2 3977 | . 2 ⊢ ((𝐴 ⊆ ℝ* ∧ 𝐵 ∈ 𝐴) → 𝐵 ∈ ℝ*) | |
| 2 | supxrcl 13358 | . . 3 ⊢ (𝐴 ⊆ ℝ* → sup(𝐴, ℝ*, < ) ∈ ℝ*) | |
| 3 | 2 | adantr 480 | . 2 ⊢ ((𝐴 ⊆ ℝ* ∧ 𝐵 ∈ 𝐴) → sup(𝐴, ℝ*, < ) ∈ ℝ*) |
| 4 | xrltso 13184 | . . . . 5 ⊢ < Or ℝ* | |
| 5 | 4 | a1i 11 | . . . 4 ⊢ (𝐴 ⊆ ℝ* → < Or ℝ*) |
| 6 | xrsupss 13352 | . . . 4 ⊢ (𝐴 ⊆ ℝ* → ∃𝑥 ∈ ℝ* (∀𝑦 ∈ 𝐴 ¬ 𝑥 < 𝑦 ∧ ∀𝑦 ∈ ℝ* (𝑦 < 𝑥 → ∃𝑧 ∈ 𝐴 𝑦 < 𝑧))) | |
| 7 | 5, 6 | supub 9500 | . . 3 ⊢ (𝐴 ⊆ ℝ* → (𝐵 ∈ 𝐴 → ¬ sup(𝐴, ℝ*, < ) < 𝐵)) |
| 8 | 7 | imp 406 | . 2 ⊢ ((𝐴 ⊆ ℝ* ∧ 𝐵 ∈ 𝐴) → ¬ sup(𝐴, ℝ*, < ) < 𝐵) |
| 9 | 1, 3, 8 | xrnltled 11330 | 1 ⊢ ((𝐴 ⊆ ℝ* ∧ 𝐵 ∈ 𝐴) → 𝐵 ≤ sup(𝐴, ℝ*, < )) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ∧ wa 395 ∈ wcel 2107 ⊆ wss 3950 class class class wbr 5142 Or wor 5590 supcsup 9481 ℝ*cxr 11295 < clt 11296 ≤ cle 11297 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1794 ax-4 1808 ax-5 1909 ax-6 1966 ax-7 2006 ax-8 2109 ax-9 2117 ax-10 2140 ax-11 2156 ax-12 2176 ax-ext 2707 ax-sep 5295 ax-nul 5305 ax-pow 5364 ax-pr 5431 ax-un 7756 ax-cnex 11212 ax-resscn 11213 ax-1cn 11214 ax-icn 11215 ax-addcl 11216 ax-addrcl 11217 ax-mulcl 11218 ax-mulrcl 11219 ax-mulcom 11220 ax-addass 11221 ax-mulass 11222 ax-distr 11223 ax-i2m1 11224 ax-1ne0 11225 ax-1rid 11226 ax-rnegex 11227 ax-rrecex 11228 ax-cnre 11229 ax-pre-lttri 11230 ax-pre-lttrn 11231 ax-pre-ltadd 11232 ax-pre-mulgt0 11233 ax-pre-sup 11234 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1779 df-nf 1783 df-sb 2064 df-mo 2539 df-eu 2568 df-clab 2714 df-cleq 2728 df-clel 2815 df-nfc 2891 df-ne 2940 df-nel 3046 df-ral 3061 df-rex 3070 df-rmo 3379 df-reu 3380 df-rab 3436 df-v 3481 df-sbc 3788 df-csb 3899 df-dif 3953 df-un 3955 df-in 3957 df-ss 3967 df-nul 4333 df-if 4525 df-pw 4601 df-sn 4626 df-pr 4628 df-op 4632 df-uni 4907 df-br 5143 df-opab 5205 df-mpt 5225 df-id 5577 df-po 5591 df-so 5592 df-xp 5690 df-rel 5691 df-cnv 5692 df-co 5693 df-dm 5694 df-rn 5695 df-res 5696 df-ima 5697 df-iota 6513 df-fun 6562 df-fn 6563 df-f 6564 df-f1 6565 df-fo 6566 df-f1o 6567 df-fv 6568 df-riota 7389 df-ov 7435 df-oprab 7436 df-mpo 7437 df-er 8746 df-en 8987 df-dom 8988 df-sdom 8989 df-sup 9483 df-pnf 11298 df-mnf 11299 df-xr 11300 df-ltxr 11301 df-le 11302 df-sub 11495 df-neg 11496 |
| This theorem is referenced by: supxrre 13370 supxrss 13375 ixxub 13409 prdsdsf 24378 prdsxmetlem 24379 xpsdsval 24392 prdsbl 24505 xrge0tsms 24857 bndth 24991 ovolmge0 25513 ovollb2lem 25524 ovolunlem1a 25532 ovoliunlem1 25538 ovoliun 25541 ovolicc2lem4 25556 ioombl1lem2 25595 ioombl1lem4 25597 uniioombllem2 25619 uniioombllem3 25621 uniioombllem6 25624 vitalilem4 25647 itg2ub 25769 itg2seq 25778 itg2monolem1 25786 itg2monolem2 25787 itg2monolem3 25788 aannenlem2 26372 radcnvcl 26461 radcnvle 26464 nmooge0 30787 nmoolb 30791 nmlno0lem 30813 nmoplb 31927 nmfnlb 31944 nmlnop0iALT 32015 xrofsup 32772 xrge0tsmsd 33066 itg2addnc 37682 rrnequiv 37843 supxrubd 45123 supxrgere 45349 supxrgelem 45353 suplesup2 45392 ressiocsup 45572 ressioosup 45573 liminfval2 45788 etransclem48 46302 fsumlesge0 46397 sge0cl 46401 sge0supre 46409 sge0xaddlem1 46453 sge0xaddlem2 46454 |
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