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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 13379 | . . . 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 3090 | . . 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 13369 | . . 3 ⊢ (𝐴 ⊆ ℝ* → sup(𝐴, ℝ*, < ) ∈ ℝ*) | |
| 6 | xrlenlt 11301 | . . 3 ⊢ ((sup(𝐴, ℝ*, < ) ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (sup(𝐴, ℝ*, < ) ≤ 𝐵 ↔ ¬ 𝐵 < sup(𝐴, ℝ*, < ))) | |
| 7 | 5, 6 | sylan 592 | . 2 ⊢ ((𝐴 ⊆ ℝ* ∧ 𝐵 ∈ ℝ*) → (sup(𝐴, ℝ*, < ) ≤ 𝐵 ↔ ¬ 𝐵 < sup(𝐴, ℝ*, < ))) |
| 8 | simpl 488 | . . . . 5 ⊢ ((𝐴 ⊆ ℝ* ∧ 𝐵 ∈ ℝ*) → 𝐴 ⊆ ℝ*) | |
| 9 | 8 | sselda 3934 | . . . 4 ⊢ (((𝐴 ⊆ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ 𝑥 ∈ 𝐴) → 𝑥 ∈ ℝ*) |
| 10 | simplr 781 | . . . 4 ⊢ (((𝐴 ⊆ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ ℝ*) | |
| 11 | 9, 10 | xrlenltd 11302 | . . 3 ⊢ (((𝐴 ⊆ ℝ* ∧ 𝐵 ∈ ℝ*) ∧ 𝑥 ∈ 𝐴) → (𝑥 ≤ 𝐵 ↔ ¬ 𝐵 < 𝑥)) |
| 12 | 11 | ralbidva 3185 | . 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 |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 401 ∈ wcel 2145 ∀wral 3078 ∃wrex 3088 ⊆ wss 3902 class class class wbr 5107 supcsup 9413 ℝ*cxr 11269 < clt 11270 ≤ cle 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 7739 ax-cnex 11183 ax-resscn 11184 ax-1cn 11185 ax-icn 11186 ax-addcl 11187 ax-addrcl 11188 ax-mulcl 11189 ax-mulrcl 11190 ax-mulcom 11191 ax-addass 11192 ax-mulass 11193 ax-distr 11194 ax-i2m1 11195 ax-1ne0 11196 ax-1rid 11197 ax-rnegex 11198 ax-rrecex 11199 ax-cnre 11200 ax-pre-lttri 11201 ax-pre-lttrn 11202 ax-pre-ltadd 11203 ax-pre-mulgt0 11204 ax-pre-sup 11205 |
| 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 7373 df-ov 7419 df-oprab 7420 df-mpo 7421 df-er 8699 df-en 8956 df-dom 8957 df-sdom 8958 df-sup 9415 df-pnf 11272 df-mnf 11273 df-xr 11274 df-ltxr 11275 df-le 11276 df-sub 11470 df-neg 11471 |
| This theorem is used by: supxrre 13381 supxrss 13386 ixxub 13421 limsupgord 15561 limsupgle 15566 prdsxmetlem 24595 ovollb2lem 25717 ovolunlem1 25726 ovoliunlem2 25732 ovolscalem1 25742 ovolicc1 25745 voliunlem2 25780 voliunlem3 25781 uniioovol 25808 uniioombllem3 25814 volsup2 25834 itg2leub 25963 itg2seq 25971 itg2mono 25982 itg2gt0 25989 itg2cn 25992 mdegleb 26291 radcnvlt1 26651 nmoubi 31239 nmopub 32375 nmfnleub 32392 esumgect 34587 prdsbnd 38530 rrnequiv 38572 suplesup2 46192 supxrleubrnmpt 46221 limsupmnflem 46535 liminfval2 46583 sge0fsum 47202 sge0lefi 47213 sge0split 47224 pimdecfgtioo 47532 pimincfltioo 47533 |
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