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| Mirrors > Home > MPE Home > Th. List > Mathboxes > ressiocsup | Structured version Visualization version GIF version | ||
| Description: If the supremum belongs to a set of reals, the set is a subset of the unbounded below, right-closed interval, with upper bound equal to the supremum. (Contributed by Glauco Siliprandi, 26-Jun-2021.) |
| Ref | Expression |
|---|---|
| ressiocsup.a | ⊢ (𝜑 → 𝐴 ⊆ ℝ) |
| ressiocsup.s | ⊢ 𝑆 = sup(𝐴, ℝ*, < ) |
| ressiocsup.e | ⊢ (𝜑 → 𝑆 ∈ 𝐴) |
| ressiocsup.5 | ⊢ 𝐼 = (-∞(,]𝑆) |
| Ref | Expression |
|---|---|
| ressiocsup | ⊢ (𝜑 → 𝐴 ⊆ 𝐼) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | mnfxr 11194 | . . . . . 6 ⊢ -∞ ∈ ℝ* | |
| 2 | 1 | a1i 11 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → -∞ ∈ ℝ*) |
| 3 | ressiocsup.s | . . . . . 6 ⊢ 𝑆 = sup(𝐴, ℝ*, < ) | |
| 4 | ressiocsup.a | . . . . . . . . 9 ⊢ (𝜑 → 𝐴 ⊆ ℝ) | |
| 5 | ressxr 11181 | . . . . . . . . . 10 ⊢ ℝ ⊆ ℝ* | |
| 6 | 5 | a1i 11 | . . . . . . . . 9 ⊢ (𝜑 → ℝ ⊆ ℝ*) |
| 7 | 4, 6 | sstrd 3925 | . . . . . . . 8 ⊢ (𝜑 → 𝐴 ⊆ ℝ*) |
| 8 | 7 | adantr 481 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐴 ⊆ ℝ*) |
| 9 | 8 | supxrcld 45562 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → sup(𝐴, ℝ*, < ) ∈ ℝ*) |
| 10 | 3, 9 | eqeltrid 2843 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝑆 ∈ ℝ*) |
| 11 | 7 | sselda 3915 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝑥 ∈ ℝ*) |
| 12 | 4 | adantr 481 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐴 ⊆ ℝ) |
| 13 | simpr 485 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝑥 ∈ 𝐴) | |
| 14 | 12, 13 | sseldd 3916 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝑥 ∈ ℝ) |
| 15 | 14 | mnfltd 13067 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → -∞ < 𝑥) |
| 16 | supxrub 13268 | . . . . . . 7 ⊢ ((𝐴 ⊆ ℝ* ∧ 𝑥 ∈ 𝐴) → 𝑥 ≤ sup(𝐴, ℝ*, < )) | |
| 17 | 8, 13, 16 | syl2anc 590 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝑥 ≤ sup(𝐴, ℝ*, < )) |
| 18 | 3 | a1i 11 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝑆 = sup(𝐴, ℝ*, < )) |
| 19 | 18 | eqcomd 2745 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → sup(𝐴, ℝ*, < ) = 𝑆) |
| 20 | 17, 19 | breqtrd 5099 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝑥 ≤ 𝑆) |
| 21 | 2, 10, 11, 15, 20 | eliocd 45960 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝑥 ∈ (-∞(,]𝑆)) |
| 22 | ressiocsup.5 | . . . 4 ⊢ 𝐼 = (-∞(,]𝑆) | |
| 23 | 21, 22 | eleqtrrdi 2850 | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝑥 ∈ 𝐼) |
| 24 | 23 | ralrimiva 3131 | . 2 ⊢ (𝜑 → ∀𝑥 ∈ 𝐴 𝑥 ∈ 𝐼) |
| 25 | dfss3 3904 | . 2 ⊢ (𝐴 ⊆ 𝐼 ↔ ∀𝑥 ∈ 𝐴 𝑥 ∈ 𝐼) | |
| 26 | 24, 25 | sylibr 235 | 1 ⊢ (𝜑 → 𝐴 ⊆ 𝐼) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 396 = wceq 1547 ∈ wcel 2119 ∀wral 3053 ⊆ wss 3883 class class class wbr 5073 (class class class)co 7357 supcsup 9344 ℝcr 11029 -∞cmnf 11169 ℝ*cxr 11170 < clt 11171 ≤ cle 11172 (,]cioc 13291 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2711 ax-sep 5219 ax-nul 5229 ax-pow 5295 ax-pr 5363 ax-un 7679 ax-cnex 11086 ax-resscn 11087 ax-1cn 11088 ax-icn 11089 ax-addcl 11090 ax-addrcl 11091 ax-mulcl 11092 ax-mulrcl 11093 ax-mulcom 11094 ax-addass 11095 ax-mulass 11096 ax-distr 11097 ax-i2m1 11098 ax-1ne0 11099 ax-1rid 11100 ax-rnegex 11101 ax-rrecex 11102 ax-cnre 11103 ax-pre-lttri 11104 ax-pre-lttrn 11105 ax-pre-ltadd 11106 ax-pre-mulgt0 11107 ax-pre-sup 11108 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3or 1093 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2718 df-cleq 2731 df-clel 2814 df-nfc 2888 df-ne 2935 df-nel 3039 df-ral 3054 df-rex 3064 df-rmo 3344 df-reu 3345 df-rab 3392 df-v 3433 df-sbc 3724 df-csb 3832 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4263 df-if 4456 df-pw 4532 df-sn 4557 df-pr 4559 df-op 4563 df-uni 4840 df-br 5074 df-opab 5136 df-mpt 5155 df-id 5514 df-po 5527 df-so 5528 df-xp 5625 df-rel 5626 df-cnv 5627 df-co 5628 df-dm 5629 df-rn 5630 df-res 5631 df-ima 5632 df-iota 6442 df-fun 6488 df-fn 6489 df-f 6490 df-f1 6491 df-fo 6492 df-f1o 6493 df-fv 6494 df-riota 7314 df-ov 7360 df-oprab 7361 df-mpo 7362 df-er 8634 df-en 8885 df-dom 8886 df-sdom 8887 df-sup 9346 df-pnf 11173 df-mnf 11174 df-xr 11175 df-ltxr 11176 df-le 11177 df-sub 11371 df-neg 11372 df-ioc 13295 |
| This theorem is referenced by: pimdecfgtioc 47166 pimincfltioc 47167 |
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