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| Mirrors > Home > MPE Home > Th. List > supxrleub | Structured version Visualization version GIF version | ||
| Description: The supremum of a set of extended reals is less than or equal to an upper bound. (Contributed by NM, 22-Feb-2006.) (Revised by Mario Carneiro, 6-Sep-2014.) |
| Ref | Expression |
|---|---|
| supxrleub | ⊢ ((𝐴 ⊆ ℝ* ∧ 𝐵 ∈ ℝ*) → (sup(𝐴, ℝ*, < ) ≤ 𝐵 ↔ ∀𝑥 ∈ 𝐴 𝑥 ≤ 𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | supxrlub 13350 | . . . 4 ⊢ ((𝐴 ⊆ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐵 < sup(𝐴, ℝ*, < ) ↔ ∃𝑥 ∈ 𝐴 𝐵 < 𝑥)) | |
| 2 | 1 | notbid 321 | . . 3 ⊢ ((𝐴 ⊆ ℝ* ∧ 𝐵 ∈ ℝ*) → (¬ 𝐵 < sup(𝐴, ℝ*, < ) ↔ ¬ ∃𝑥 ∈ 𝐴 𝐵 < 𝑥)) |
| 3 | ralnex 3089 | . . 3 ⊢ (∀𝑥 ∈ 𝐴 ¬ 𝐵 < 𝑥 ↔ ¬ ∃𝑥 ∈ 𝐴 𝐵 < 𝑥) | |
| 4 | 2, 3 | bitr4di 292 | . 2 ⊢ ((𝐴 ⊆ ℝ* ∧ 𝐵 ∈ ℝ*) → (¬ 𝐵 < sup(𝐴, ℝ*, < ) ↔ ∀𝑥 ∈ 𝐴 ¬ 𝐵 < 𝑥)) |
| 5 | supxrcl 13340 | . . 3 ⊢ (𝐴 ⊆ ℝ* → sup(𝐴, ℝ*, < ) ∈ ℝ*) | |
| 6 | xrlenlt 11273 | . . 3 ⊢ ((sup(𝐴, ℝ*, < ) ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (sup(𝐴, ℝ*, < ) ≤ 𝐵 ↔ ¬ 𝐵 < sup(𝐴, ℝ*, < ))) | |
| 7 | 5, 6 | sylan 591 | . 2 ⊢ ((𝐴 ⊆ ℝ* ∧ 𝐵 ∈ ℝ*) → (sup(𝐴, ℝ*, < ) ≤ 𝐵 ↔ ¬ 𝐵 < sup(𝐴, ℝ*, < ))) |
| 8 | simpl 487 | . . . . 5 ⊢ ((𝐴 ⊆ ℝ* ∧ 𝐵 ∈ ℝ*) → 𝐴 ⊆ ℝ*) | |
| 9 | 8 | sselda 3936 | . . . 4 ⊢ (((𝐴 ⊆ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ 𝑥 ∈ 𝐴) → 𝑥 ∈ ℝ*) |
| 10 | simplr 780 | . . . 4 ⊢ (((𝐴 ⊆ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ ℝ*) | |
| 11 | 9, 10 | xrlenltd 11274 | . . 3 ⊢ (((𝐴 ⊆ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ 𝑥 ∈ 𝐴) → (𝑥 ≤ 𝐵 ↔ ¬ 𝐵 < 𝑥)) |
| 12 | 11 | ralbidva 3184 | . 2 ⊢ ((𝐴 ⊆ ℝ* ∧ 𝐵 ∈ ℝ*) → (∀𝑥 ∈ 𝐴 𝑥 ≤ 𝐵 ↔ ∀𝑥 ∈ 𝐴 ¬ 𝐵 < 𝑥)) |
| 13 | 4, 7, 12 | 3bitr4d 314 | 1 ⊢ ((𝐴 ⊆ ℝ* ∧ 𝐵 ∈ ℝ*) → (sup(𝐴, ℝ*, < ) ≤ 𝐵 ↔ ∀𝑥 ∈ 𝐴 𝑥 ≤ 𝐵)) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 400 ∈ wcel 2141 ∀wral 3077 ∃wrex 3087 ⊆ wss 3904 class class class wbr 5108 supcsup 9399 ℝ*cxr 11241 < clt 11242 ≤ cle 11243 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1823 ax-4 1837 ax-5 1938 ax-6 1995 ax-7 2036 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-sep 5256 ax-nul 5268 ax-pow 5336 ax-pr 5404 ax-un 7732 ax-cnex 11155 ax-resscn 11156 ax-1cn 11157 ax-icn 11158 ax-addcl 11159 ax-addrcl 11160 ax-mulcl 11161 ax-mulrcl 11162 ax-mulcom 11163 ax-addass 11164 ax-mulass 11165 ax-distr 11166 ax-i2m1 11167 ax-1ne0 11168 ax-1rid 11169 ax-rnegex 11170 ax-rrecex 11171 ax-cnre 11172 ax-pre-lttri 11173 ax-pre-lttrn 11174 ax-pre-ltadd 11175 ax-pre-mulgt0 11176 ax-pre-sup 11177 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1571 df-fal 1581 df-ex 1808 df-nf 1812 df-sb 2095 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-rmo 3367 df-reu 3368 df-rab 3415 df-v 3455 df-sbc 3744 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4487 df-pw 4563 df-sn 4589 df-pr 4591 df-op 4595 df-uni 4872 df-br 5109 df-opab 5173 df-mpt 5192 df-id 5556 df-po 5569 df-so 5570 df-xp 5667 df-rel 5668 df-cnv 5669 df-co 5670 df-dm 5671 df-rn 5672 df-res 5673 df-ima 5674 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7367 df-ov 7413 df-oprab 7414 df-mpo 7415 df-er 8693 df-en 8943 df-dom 8944 df-sdom 8945 df-sup 9401 df-pnf 11244 df-mnf 11245 df-xr 11246 df-ltxr 11247 df-le 11248 df-sub 11442 df-neg 11443 |
| This theorem is referenced by: supxrre 13352 supxrss 13357 ixxub 13392 limsupgord 15522 limsupgle 15527 prdsxmetlem 24504 ovollb2lem 25626 ovolunlem1 25635 ovoliunlem2 25641 ovolscalem1 25651 ovolicc1 25654 voliunlem2 25689 voliunlem3 25690 uniioovol 25717 uniioombllem3 25723 volsup2 25743 itg2leub 25872 itg2seq 25880 itg2mono 25891 itg2gt0 25898 itg2cn 25901 mdegleb 26200 radcnvlt1 26557 nmoubi 31090 nmopub 32226 nmfnleub 32243 esumgect 34446 prdsbnd 38388 rrnequiv 38430 suplesup2 46039 supxrleubrnmpt 46068 limsupmnflem 46382 liminfval2 46430 sge0fsum 47049 sge0lefi 47060 sge0split 47071 pimdecfgtioo 47379 pimincfltioo 47380 |
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