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Mathbox for Glauco Siliprandi |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > supxrleubrnmptf | Structured version Visualization version GIF version |
Description: The supremum of a nonempty bounded indexed set of extended reals is less than or equal to an upper bound. (Contributed by Glauco Siliprandi, 2-Jan-2022.) |
Ref | Expression |
---|---|
supxrleubrnmptf.x | ⊢ Ⅎ𝑥𝜑 |
supxrleubrnmptf.a | ⊢ Ⅎ𝑥𝐴 |
supxrleubrnmptf.n | ⊢ Ⅎ𝑥𝐶 |
supxrleubrnmptf.b | ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ ℝ*) |
supxrleubrnmptf.c | ⊢ (𝜑 → 𝐶 ∈ ℝ*) |
Ref | Expression |
---|---|
supxrleubrnmptf | ⊢ (𝜑 → (sup(ran (𝑥 ∈ 𝐴 ↦ 𝐵), ℝ*, < ) ≤ 𝐶 ↔ ∀𝑥 ∈ 𝐴 𝐵 ≤ 𝐶)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | supxrleubrnmptf.a | . . . . . . 7 ⊢ Ⅎ𝑥𝐴 | |
2 | nfcv 2908 | . . . . . . 7 ⊢ Ⅎ𝑦𝐴 | |
3 | nfcv 2908 | . . . . . . 7 ⊢ Ⅎ𝑦𝐵 | |
4 | nfcsb1v 3946 | . . . . . . 7 ⊢ Ⅎ𝑥⦋𝑦 / 𝑥⦌𝐵 | |
5 | csbeq1a 3935 | . . . . . . 7 ⊢ (𝑥 = 𝑦 → 𝐵 = ⦋𝑦 / 𝑥⦌𝐵) | |
6 | 1, 2, 3, 4, 5 | cbvmptf 5275 | . . . . . 6 ⊢ (𝑥 ∈ 𝐴 ↦ 𝐵) = (𝑦 ∈ 𝐴 ↦ ⦋𝑦 / 𝑥⦌𝐵) |
7 | 6 | rneqi 5962 | . . . . 5 ⊢ ran (𝑥 ∈ 𝐴 ↦ 𝐵) = ran (𝑦 ∈ 𝐴 ↦ ⦋𝑦 / 𝑥⦌𝐵) |
8 | 7 | supeq1i 9516 | . . . 4 ⊢ sup(ran (𝑥 ∈ 𝐴 ↦ 𝐵), ℝ*, < ) = sup(ran (𝑦 ∈ 𝐴 ↦ ⦋𝑦 / 𝑥⦌𝐵), ℝ*, < ) |
9 | 8 | breq1i 5173 | . . 3 ⊢ (sup(ran (𝑥 ∈ 𝐴 ↦ 𝐵), ℝ*, < ) ≤ 𝐶 ↔ sup(ran (𝑦 ∈ 𝐴 ↦ ⦋𝑦 / 𝑥⦌𝐵), ℝ*, < ) ≤ 𝐶) |
10 | 9 | a1i 11 | . 2 ⊢ (𝜑 → (sup(ran (𝑥 ∈ 𝐴 ↦ 𝐵), ℝ*, < ) ≤ 𝐶 ↔ sup(ran (𝑦 ∈ 𝐴 ↦ ⦋𝑦 / 𝑥⦌𝐵), ℝ*, < ) ≤ 𝐶)) |
11 | nfv 1913 | . . 3 ⊢ Ⅎ𝑦𝜑 | |
12 | supxrleubrnmptf.x | . . . . . 6 ⊢ Ⅎ𝑥𝜑 | |
13 | 1 | nfcri 2900 | . . . . . 6 ⊢ Ⅎ𝑥 𝑦 ∈ 𝐴 |
14 | 12, 13 | nfan 1898 | . . . . 5 ⊢ Ⅎ𝑥(𝜑 ∧ 𝑦 ∈ 𝐴) |
15 | 4 | nfel1 2925 | . . . . 5 ⊢ Ⅎ𝑥⦋𝑦 / 𝑥⦌𝐵 ∈ ℝ* |
16 | 14, 15 | nfim 1895 | . . . 4 ⊢ Ⅎ𝑥((𝜑 ∧ 𝑦 ∈ 𝐴) → ⦋𝑦 / 𝑥⦌𝐵 ∈ ℝ*) |
17 | eleq1w 2827 | . . . . . 6 ⊢ (𝑥 = 𝑦 → (𝑥 ∈ 𝐴 ↔ 𝑦 ∈ 𝐴)) | |
18 | 17 | anbi2d 629 | . . . . 5 ⊢ (𝑥 = 𝑦 → ((𝜑 ∧ 𝑥 ∈ 𝐴) ↔ (𝜑 ∧ 𝑦 ∈ 𝐴))) |
19 | 5 | eleq1d 2829 | . . . . 5 ⊢ (𝑥 = 𝑦 → (𝐵 ∈ ℝ* ↔ ⦋𝑦 / 𝑥⦌𝐵 ∈ ℝ*)) |
20 | 18, 19 | imbi12d 344 | . . . 4 ⊢ (𝑥 = 𝑦 → (((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ ℝ*) ↔ ((𝜑 ∧ 𝑦 ∈ 𝐴) → ⦋𝑦 / 𝑥⦌𝐵 ∈ ℝ*))) |
21 | supxrleubrnmptf.b | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ ℝ*) | |
22 | 16, 20, 21 | chvarfv 2241 | . . 3 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐴) → ⦋𝑦 / 𝑥⦌𝐵 ∈ ℝ*) |
23 | supxrleubrnmptf.c | . . 3 ⊢ (𝜑 → 𝐶 ∈ ℝ*) | |
24 | 11, 22, 23 | supxrleubrnmpt 45321 | . 2 ⊢ (𝜑 → (sup(ran (𝑦 ∈ 𝐴 ↦ ⦋𝑦 / 𝑥⦌𝐵), ℝ*, < ) ≤ 𝐶 ↔ ∀𝑦 ∈ 𝐴 ⦋𝑦 / 𝑥⦌𝐵 ≤ 𝐶)) |
25 | nfcv 2908 | . . . . 5 ⊢ Ⅎ𝑥 ≤ | |
26 | supxrleubrnmptf.n | . . . . 5 ⊢ Ⅎ𝑥𝐶 | |
27 | 4, 25, 26 | nfbr 5213 | . . . 4 ⊢ Ⅎ𝑥⦋𝑦 / 𝑥⦌𝐵 ≤ 𝐶 |
28 | nfv 1913 | . . . 4 ⊢ Ⅎ𝑦 𝐵 ≤ 𝐶 | |
29 | eqcom 2747 | . . . . . . . 8 ⊢ (𝑥 = 𝑦 ↔ 𝑦 = 𝑥) | |
30 | 29 | imbi1i 349 | . . . . . . 7 ⊢ ((𝑥 = 𝑦 → 𝐵 = ⦋𝑦 / 𝑥⦌𝐵) ↔ (𝑦 = 𝑥 → 𝐵 = ⦋𝑦 / 𝑥⦌𝐵)) |
31 | eqcom 2747 | . . . . . . . 8 ⊢ (𝐵 = ⦋𝑦 / 𝑥⦌𝐵 ↔ ⦋𝑦 / 𝑥⦌𝐵 = 𝐵) | |
32 | 31 | imbi2i 336 | . . . . . . 7 ⊢ ((𝑦 = 𝑥 → 𝐵 = ⦋𝑦 / 𝑥⦌𝐵) ↔ (𝑦 = 𝑥 → ⦋𝑦 / 𝑥⦌𝐵 = 𝐵)) |
33 | 30, 32 | bitri 275 | . . . . . 6 ⊢ ((𝑥 = 𝑦 → 𝐵 = ⦋𝑦 / 𝑥⦌𝐵) ↔ (𝑦 = 𝑥 → ⦋𝑦 / 𝑥⦌𝐵 = 𝐵)) |
34 | 5, 33 | mpbi 230 | . . . . 5 ⊢ (𝑦 = 𝑥 → ⦋𝑦 / 𝑥⦌𝐵 = 𝐵) |
35 | 34 | breq1d 5176 | . . . 4 ⊢ (𝑦 = 𝑥 → (⦋𝑦 / 𝑥⦌𝐵 ≤ 𝐶 ↔ 𝐵 ≤ 𝐶)) |
36 | 2, 1, 27, 28, 35 | cbvralfw 3310 | . . 3 ⊢ (∀𝑦 ∈ 𝐴 ⦋𝑦 / 𝑥⦌𝐵 ≤ 𝐶 ↔ ∀𝑥 ∈ 𝐴 𝐵 ≤ 𝐶) |
37 | 36 | a1i 11 | . 2 ⊢ (𝜑 → (∀𝑦 ∈ 𝐴 ⦋𝑦 / 𝑥⦌𝐵 ≤ 𝐶 ↔ ∀𝑥 ∈ 𝐴 𝐵 ≤ 𝐶)) |
38 | 10, 24, 37 | 3bitrd 305 | 1 ⊢ (𝜑 → (sup(ran (𝑥 ∈ 𝐴 ↦ 𝐵), ℝ*, < ) ≤ 𝐶 ↔ ∀𝑥 ∈ 𝐴 𝐵 ≤ 𝐶)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 = wceq 1537 Ⅎwnf 1781 ∈ wcel 2108 Ⅎwnfc 2893 ∀wral 3067 ⦋csb 3921 class class class wbr 5166 ↦ cmpt 5249 ran crn 5701 supcsup 9509 ℝ*cxr 11323 < clt 11324 ≤ cle 11325 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1793 ax-4 1807 ax-5 1909 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2158 ax-12 2178 ax-ext 2711 ax-sep 5317 ax-nul 5324 ax-pow 5383 ax-pr 5447 ax-un 7770 ax-cnex 11240 ax-resscn 11241 ax-1cn 11242 ax-icn 11243 ax-addcl 11244 ax-addrcl 11245 ax-mulcl 11246 ax-mulrcl 11247 ax-mulcom 11248 ax-addass 11249 ax-mulass 11250 ax-distr 11251 ax-i2m1 11252 ax-1ne0 11253 ax-1rid 11254 ax-rnegex 11255 ax-rrecex 11256 ax-cnre 11257 ax-pre-lttri 11258 ax-pre-lttrn 11259 ax-pre-ltadd 11260 ax-pre-mulgt0 11261 ax-pre-sup 11262 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 847 df-3or 1088 df-3an 1089 df-tru 1540 df-fal 1550 df-ex 1778 df-nf 1782 df-sb 2065 df-mo 2543 df-eu 2572 df-clab 2718 df-cleq 2732 df-clel 2819 df-nfc 2895 df-ne 2947 df-nel 3053 df-ral 3068 df-rex 3077 df-rmo 3388 df-reu 3389 df-rab 3444 df-v 3490 df-sbc 3805 df-csb 3922 df-dif 3979 df-un 3981 df-in 3983 df-ss 3993 df-nul 4353 df-if 4549 df-pw 4624 df-sn 4649 df-pr 4651 df-op 4655 df-uni 4932 df-br 5167 df-opab 5229 df-mpt 5250 df-id 5593 df-po 5607 df-so 5608 df-xp 5706 df-rel 5707 df-cnv 5708 df-co 5709 df-dm 5710 df-rn 5711 df-res 5712 df-ima 5713 df-iota 6525 df-fun 6575 df-fn 6576 df-f 6577 df-f1 6578 df-fo 6579 df-f1o 6580 df-fv 6581 df-riota 7404 df-ov 7451 df-oprab 7452 df-mpo 7453 df-er 8763 df-en 9004 df-dom 9005 df-sdom 9006 df-sup 9511 df-pnf 11326 df-mnf 11327 df-xr 11328 df-ltxr 11329 df-le 11330 df-sub 11522 df-neg 11523 |
This theorem is referenced by: liminflelimsuplem 45696 |
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