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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 3935 | . 2 ⊢ ((𝐴 ⊆ ℝ* ∧ 𝐵 ∈ 𝐴) → 𝐵 ∈ ℝ*) | |
| 2 | supxrcl 13359 | . . 3 ⊢ (𝐴 ⊆ ℝ* → sup(𝐴, ℝ*, < ) ∈ ℝ*) | |
| 3 | 2 | adantr 486 | . 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 13353 | . . . 4 ⊢ (𝐴 ⊆ ℝ* → ∃𝑥 ∈ ℝ* (∀𝑦 ∈ 𝐴 ¬ 𝑥 < 𝑦 ∧ ∀𝑦 ∈ ℝ* (𝑦 < 𝑥 → ∃𝑧 ∈ 𝐴 𝑦 < 𝑧))) | |
| 7 | 5, 6 | supub 9429 | . . 3 ⊢ (𝐴 ⊆ ℝ* → (𝐵 ∈ 𝐴 → ¬ sup(𝐴, ℝ*, < ) < 𝐵)) |
| 8 | 7 | imp 412 | . 2 ⊢ ((𝐴 ⊆ ℝ* ∧ 𝐵 ∈ 𝐴) → ¬ sup(𝐴, ℝ*, < ) < 𝐵) |
| 9 | 1, 3, 8 | xrnltled 11296 | 1 ⊢ ((𝐴 ⊆ ℝ* ∧ 𝐵 ∈ 𝐴) → 𝐵 ≤ sup(𝐴, ℝ*, < )) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ∧ wa 401 ∈ wcel 2146 ⊆ wss 3908 class class class wbr 5114 Or wor 5573 supcsup 9410 ℝ*cxr 11260 < clt 11261 ≤ cle 11262 |
| 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 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2738 ax-sep 5262 ax-nul 5274 ax-pow 5341 ax-pr 5409 ax-un 7745 ax-cnex 11174 ax-resscn 11175 ax-1cn 11176 ax-icn 11177 ax-addcl 11178 ax-addrcl 11179 ax-mulcl 11180 ax-mulrcl 11181 ax-mulcom 11182 ax-addass 11183 ax-mulass 11184 ax-distr 11185 ax-i2m1 11186 ax-1ne0 11187 ax-1rid 11188 ax-rnegex 11189 ax-rrecex 11190 ax-cnre 11191 ax-pre-lttri 11192 ax-pre-lttrn 11193 ax-pre-ltadd 11194 ax-pre-mulgt0 11195 ax-pre-sup 11196 |
| 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 2570 df-eu 2600 df-clab 2745 df-cleq 2758 df-clel 2841 df-nfc 2915 df-ne 2962 df-nel 3068 df-ral 3083 df-rex 3093 df-rmo 3372 df-reu 3373 df-rab 3420 df-v 3460 df-sbc 3748 df-csb 3857 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-nul 4290 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4878 df-br 5115 df-opab 5179 df-mpt 5198 df-id 5561 df-po 5574 df-so 5575 df-xp 5672 df-rel 5673 df-cnv 5674 df-co 5675 df-dm 5676 df-rn 5677 df-res 5678 df-ima 5679 df-iota 6499 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7380 df-ov 7426 df-oprab 7427 df-mpo 7428 df-er 8703 df-en 8953 df-dom 8954 df-sdom 8955 df-sup 9412 df-pnf 11263 df-mnf 11264 df-xr 11265 df-ltxr 11266 df-le 11267 df-sub 11461 df-neg 11462 |
| This theorem is used by: supxrre 13371 supxrss 13376 ixxub 13411 prdsdsf 24561 prdsxmetlem 24562 xpsdsval 24575 prdsbl 24685 xrge0tsms 25029 bndth 25154 ovolmge0 25673 ovollb2lem 25684 ovolunlem1a 25692 ovoliunlem1 25698 ovoliun 25701 ovolicc2lem4 25716 ioombl1lem2 25755 ioombl1lem4 25757 uniioombllem2 25779 uniioombllem3 25781 uniioombllem6 25784 vitalilem4 25807 itg2ub 25929 itg2seq 25938 itg2monolem1 25946 itg2monolem2 25947 itg2monolem3 25948 aannenlem2 26529 radcnvcl 26617 radcnvle 26620 nmooge0 31156 nmoolb 31160 nmlno0lem 31182 nmoplb 32296 nmfnlb 32313 nmlnop0iALT 32384 xrofsup 33149 xrge0tsmsd 33424 itg2addnc 38365 rrnequiv 38526 supxrubd 45871 supxrgere 46089 supxrgelem 46093 suplesup2 46131 ressiocsup 46310 ressioosup 46311 liminfval2 46522 etransclem48 47036 fsumlesge0 47131 sge0cl 47135 sge0supre 47143 sge0xaddlem1 47187 sge0xaddlem2 47188 |
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