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| Mirrors > Home > MPE Home > Th. List > Mathboxes > sn-suprubd | Structured version Visualization version GIF version | ||
| Description: suprubd 12109 without ax-mulcom 11093, proven trivially from sn-suprcld 42983. (Contributed by SN, 29-Jun-2025.) |
| Ref | Expression |
|---|---|
| sn-sup3d.1 | ⊢ (𝜑 → 𝐴 ⊆ ℝ) |
| sn-sup3d.2 | ⊢ (𝜑 → 𝐴 ≠ ∅) |
| sn-sup3d.3 | ⊢ (𝜑 → ∃𝑥 ∈ ℝ ∀𝑦 ∈ 𝐴 𝑦 ≤ 𝑥) |
| sn-suprubd.4 | ⊢ (𝜑 → 𝐵 ∈ 𝐴) |
| Ref | Expression |
|---|---|
| sn-suprubd | ⊢ (𝜑 → 𝐵 ≤ sup(𝐴, ℝ, < )) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sn-sup3d.1 | . . 3 ⊢ (𝜑 → 𝐴 ⊆ ℝ) | |
| 2 | sn-suprubd.4 | . . 3 ⊢ (𝜑 → 𝐵 ∈ 𝐴) | |
| 3 | 1, 2 | sseldd 3916 | . 2 ⊢ (𝜑 → 𝐵 ∈ ℝ) |
| 4 | sn-sup3d.2 | . . 3 ⊢ (𝜑 → 𝐴 ≠ ∅) | |
| 5 | sn-sup3d.3 | . . 3 ⊢ (𝜑 → ∃𝑥 ∈ ℝ ∀𝑦 ∈ 𝐴 𝑦 ≤ 𝑥) | |
| 6 | 1, 4, 5 | sn-suprcld 42983 | . 2 ⊢ (𝜑 → sup(𝐴, ℝ, < ) ∈ ℝ) |
| 7 | ltso 11217 | . . . . 5 ⊢ < Or ℝ | |
| 8 | 7 | a1i 11 | . . . 4 ⊢ (𝜑 → < Or ℝ) |
| 9 | 1, 4, 5 | sn-sup3d 42982 | . . . 4 ⊢ (𝜑 → ∃𝑥 ∈ ℝ (∀𝑦 ∈ 𝐴 ¬ 𝑥 < 𝑦 ∧ ∀𝑦 ∈ ℝ (𝑦 < 𝑥 → ∃𝑧 ∈ 𝐴 𝑦 < 𝑧))) |
| 10 | 8, 9 | supub 9362 | . . 3 ⊢ (𝜑 → (𝐵 ∈ 𝐴 → ¬ sup(𝐴, ℝ, < ) < 𝐵)) |
| 11 | 2, 10 | mpd 15 | . 2 ⊢ (𝜑 → ¬ sup(𝐴, ℝ, < ) < 𝐵) |
| 12 | 3, 6, 11 | nltled 11287 | 1 ⊢ (𝜑 → 𝐵 ≤ sup(𝐴, ℝ, < )) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ∈ wcel 2119 ≠ wne 2934 ∀wral 3053 ∃wrex 3063 ⊆ wss 3883 ∅c0 4261 class class class wbr 5072 Or wor 5525 supcsup 9343 ℝcr 11028 < clt 11170 ≤ cle 11171 |
| 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 5218 ax-nul 5228 ax-pow 5294 ax-pr 5362 ax-un 7678 ax-resscn 11086 ax-1cn 11087 ax-icn 11088 ax-addcl 11089 ax-addrcl 11090 ax-mulcl 11091 ax-mulrcl 11092 ax-addass 11094 ax-mulass 11095 ax-distr 11096 ax-i2m1 11097 ax-1ne0 11098 ax-1rid 11099 ax-rnegex 11100 ax-rrecex 11101 ax-cnre 11102 ax-pre-lttri 11103 ax-pre-lttrn 11104 ax-pre-ltadd 11105 ax-pre-mulgt0 11106 ax-pre-sup 11107 |
| 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 4262 df-if 4455 df-pw 4531 df-sn 4556 df-pr 4558 df-op 4562 df-uni 4839 df-br 5073 df-opab 5135 df-mpt 5154 df-id 5513 df-po 5526 df-so 5527 df-xp 5624 df-rel 5625 df-cnv 5626 df-co 5627 df-dm 5628 df-rn 5629 df-res 5630 df-ima 5631 df-iota 6441 df-fun 6487 df-fn 6488 df-f 6489 df-f1 6490 df-fo 6491 df-f1o 6492 df-fv 6493 df-riota 7313 df-ov 7359 df-oprab 7360 df-mpo 7361 df-er 8633 df-en 8884 df-dom 8885 df-sdom 8886 df-sup 9345 df-pnf 11172 df-mnf 11173 df-xr 11174 df-ltxr 11175 df-le 11176 df-2 12235 df-3 12236 df-resub 42843 |
| This theorem is referenced by: (None) |
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