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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 | xrltso 11850 | . . . . 5 ⊢ < Or ℝ* | |
2 | 1 | a1i 11 | . . . 4 ⊢ (𝐴 ⊆ ℝ* → < Or ℝ*) |
3 | xrsupss 12011 | . . . 4 ⊢ (𝐴 ⊆ ℝ* → ∃𝑥 ∈ ℝ* (∀𝑦 ∈ 𝐴 ¬ 𝑥 < 𝑦 ∧ ∀𝑦 ∈ ℝ* (𝑦 < 𝑥 → ∃𝑧 ∈ 𝐴 𝑦 < 𝑧))) | |
4 | 2, 3 | supub 8248 | . . 3 ⊢ (𝐴 ⊆ ℝ* → (𝐵 ∈ 𝐴 → ¬ sup(𝐴, ℝ*, < ) < 𝐵)) |
5 | 4 | imp 444 | . 2 ⊢ ((𝐴 ⊆ ℝ* ∧ 𝐵 ∈ 𝐴) → ¬ sup(𝐴, ℝ*, < ) < 𝐵) |
6 | ssel2 3563 | . . 3 ⊢ ((𝐴 ⊆ ℝ* ∧ 𝐵 ∈ 𝐴) → 𝐵 ∈ ℝ*) | |
7 | supxrcl 12017 | . . . 4 ⊢ (𝐴 ⊆ ℝ* → sup(𝐴, ℝ*, < ) ∈ ℝ*) | |
8 | 7 | adantr 480 | . . 3 ⊢ ((𝐴 ⊆ ℝ* ∧ 𝐵 ∈ 𝐴) → sup(𝐴, ℝ*, < ) ∈ ℝ*) |
9 | xrlenlt 9982 | . . 3 ⊢ ((𝐵 ∈ ℝ* ∧ sup(𝐴, ℝ*, < ) ∈ ℝ*) → (𝐵 ≤ sup(𝐴, ℝ*, < ) ↔ ¬ sup(𝐴, ℝ*, < ) < 𝐵)) | |
10 | 6, 8, 9 | syl2anc 691 | . 2 ⊢ ((𝐴 ⊆ ℝ* ∧ 𝐵 ∈ 𝐴) → (𝐵 ≤ sup(𝐴, ℝ*, < ) ↔ ¬ sup(𝐴, ℝ*, < ) < 𝐵)) |
11 | 5, 10 | mpbird 246 | 1 ⊢ ((𝐴 ⊆ ℝ* ∧ 𝐵 ∈ 𝐴) → 𝐵 ≤ sup(𝐴, ℝ*, < )) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 195 ∧ wa 383 ∈ wcel 1977 ⊆ wss 3540 class class class wbr 4583 Or wor 4958 supcsup 8229 ℝ*cxr 9952 < clt 9953 ≤ cle 9954 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-8 1979 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-sep 4709 ax-nul 4717 ax-pow 4769 ax-pr 4833 ax-un 6847 ax-cnex 9871 ax-resscn 9872 ax-1cn 9873 ax-icn 9874 ax-addcl 9875 ax-addrcl 9876 ax-mulcl 9877 ax-mulrcl 9878 ax-mulcom 9879 ax-addass 9880 ax-mulass 9881 ax-distr 9882 ax-i2m1 9883 ax-1ne0 9884 ax-1rid 9885 ax-rnegex 9886 ax-rrecex 9887 ax-cnre 9888 ax-pre-lttri 9889 ax-pre-lttrn 9890 ax-pre-ltadd 9891 ax-pre-mulgt0 9892 ax-pre-sup 9893 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3or 1032 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-nel 2783 df-ral 2901 df-rex 2902 df-reu 2903 df-rmo 2904 df-rab 2905 df-v 3175 df-sbc 3403 df-csb 3500 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-nul 3875 df-if 4037 df-pw 4110 df-sn 4126 df-pr 4128 df-op 4132 df-uni 4373 df-br 4584 df-opab 4644 df-mpt 4645 df-id 4953 df-po 4959 df-so 4960 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-rn 5049 df-res 5050 df-ima 5051 df-iota 5768 df-fun 5806 df-fn 5807 df-f 5808 df-f1 5809 df-fo 5810 df-f1o 5811 df-fv 5812 df-riota 6511 df-ov 6552 df-oprab 6553 df-mpt2 6554 df-er 7629 df-en 7842 df-dom 7843 df-sdom 7844 df-sup 8231 df-pnf 9955 df-mnf 9956 df-xr 9957 df-ltxr 9958 df-le 9959 df-sub 10147 df-neg 10148 |
This theorem is referenced by: supxrre 12029 supxrss 12034 ixxub 12067 prdsdsf 21982 prdsxmetlem 21983 xpsdsval 21996 prdsbl 22106 xrge0tsms 22445 bndth 22565 ovolmge0 23052 ovollb2lem 23063 ovolunlem1a 23071 ovoliunlem1 23077 ovoliun 23080 ovolicc2lem4 23095 ioombl1lem2 23134 ioombl1lem4 23136 uniioombllem2 23157 uniioombllem3 23159 uniioombllem6 23162 vitalilem4 23186 itg2ub 23306 itg2seq 23315 itg2monolem1 23323 itg2monolem2 23324 itg2monolem3 23325 aannenlem2 23888 radcnvcl 23975 radcnvle 23978 nmooge0 27006 nmoolb 27010 nmlno0lem 27032 nmoplb 28150 nmfnlb 28167 nmlnop0iALT 28238 xrofsup 28923 xrge0tsmsd 29116 itg2addnc 32634 rrnequiv 32804 supxrubd 38328 supxrgere 38490 supxrgelem 38494 suplesup2 38533 ressiocsup 38628 ressioosup 38629 etransclem48 39175 fsumlesge0 39270 sge0cl 39274 sge0supre 39282 sge0xaddlem1 39326 sge0xaddlem2 39327 |
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