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| Mirrors > Home > MPE Home > Th. List > Mathboxes > suplesup2 | Structured version Visualization version GIF version | ||
| Description: If any element of 𝐴 is less than or equal to an element in 𝐵, then the supremum of 𝐴 is less than or equal to the supremum of 𝐵. (Contributed by Glauco Siliprandi, 8-Apr-2021.) |
| Ref | Expression |
|---|---|
| suplesup2.a | ⊢ (𝜑 → 𝐴 ⊆ ℝ*) |
| suplesup2.b | ⊢ (𝜑 → 𝐵 ⊆ ℝ*) |
| suplesup2.c | ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → ∃𝑦 ∈ 𝐵 𝑥 ≤ 𝑦) |
| Ref | Expression |
|---|---|
| suplesup2 | ⊢ (𝜑 → sup(𝐴, ℝ*, < ) ≤ sup(𝐵, ℝ*, < )) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | suplesup2.c | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → ∃𝑦 ∈ 𝐵 𝑥 ≤ 𝑦) | |
| 2 | suplesup2.a | . . . . . . . . 9 ⊢ (𝜑 → 𝐴 ⊆ ℝ*) | |
| 3 | 2 | sselda 3933 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝑥 ∈ ℝ*) |
| 4 | 3 | 3ad2ant1 1133 | . . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐵 ∧ 𝑥 ≤ 𝑦) → 𝑥 ∈ ℝ*) |
| 5 | simp1l 1198 | . . . . . . . 8 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐵 ∧ 𝑥 ≤ 𝑦) → 𝜑) | |
| 6 | simp2 1137 | . . . . . . . 8 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐵 ∧ 𝑥 ≤ 𝑦) → 𝑦 ∈ 𝐵) | |
| 7 | suplesup2.b | . . . . . . . . 9 ⊢ (𝜑 → 𝐵 ⊆ ℝ*) | |
| 8 | 7 | sselda 3933 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐵) → 𝑦 ∈ ℝ*) |
| 9 | 5, 6, 8 | syl2anc 584 | . . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐵 ∧ 𝑥 ≤ 𝑦) → 𝑦 ∈ ℝ*) |
| 10 | supxrcl 13230 | . . . . . . . . 9 ⊢ (𝐵 ⊆ ℝ* → sup(𝐵, ℝ*, < ) ∈ ℝ*) | |
| 11 | 7, 10 | syl 17 | . . . . . . . 8 ⊢ (𝜑 → sup(𝐵, ℝ*, < ) ∈ ℝ*) |
| 12 | 5, 11 | syl 17 | . . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐵 ∧ 𝑥 ≤ 𝑦) → sup(𝐵, ℝ*, < ) ∈ ℝ*) |
| 13 | simp3 1138 | . . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐵 ∧ 𝑥 ≤ 𝑦) → 𝑥 ≤ 𝑦) | |
| 14 | 7 | adantr 480 | . . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐵) → 𝐵 ⊆ ℝ*) |
| 15 | simpr 484 | . . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐵) → 𝑦 ∈ 𝐵) | |
| 16 | supxrub 13239 | . . . . . . . . 9 ⊢ ((𝐵 ⊆ ℝ* ∧ 𝑦 ∈ 𝐵) → 𝑦 ≤ sup(𝐵, ℝ*, < )) | |
| 17 | 14, 15, 16 | syl2anc 584 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐵) → 𝑦 ≤ sup(𝐵, ℝ*, < )) |
| 18 | 5, 6, 17 | syl2anc 584 | . . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐵 ∧ 𝑥 ≤ 𝑦) → 𝑦 ≤ sup(𝐵, ℝ*, < )) |
| 19 | 4, 9, 12, 13, 18 | xrletrd 13076 | . . . . . 6 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐵 ∧ 𝑥 ≤ 𝑦) → 𝑥 ≤ sup(𝐵, ℝ*, < )) |
| 20 | 19 | 3exp 1119 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (𝑦 ∈ 𝐵 → (𝑥 ≤ 𝑦 → 𝑥 ≤ sup(𝐵, ℝ*, < )))) |
| 21 | 20 | rexlimdv 3135 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (∃𝑦 ∈ 𝐵 𝑥 ≤ 𝑦 → 𝑥 ≤ sup(𝐵, ℝ*, < ))) |
| 22 | 1, 21 | mpd 15 | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝑥 ≤ sup(𝐵, ℝ*, < )) |
| 23 | 22 | ralrimiva 3128 | . 2 ⊢ (𝜑 → ∀𝑥 ∈ 𝐴 𝑥 ≤ sup(𝐵, ℝ*, < )) |
| 24 | supxrleub 13241 | . . 3 ⊢ ((𝐴 ⊆ ℝ* ∧ sup(𝐵, ℝ*, < ) ∈ ℝ*) → (sup(𝐴, ℝ*, < ) ≤ sup(𝐵, ℝ*, < ) ↔ ∀𝑥 ∈ 𝐴 𝑥 ≤ sup(𝐵, ℝ*, < ))) | |
| 25 | 2, 11, 24 | syl2anc 584 | . 2 ⊢ (𝜑 → (sup(𝐴, ℝ*, < ) ≤ sup(𝐵, ℝ*, < ) ↔ ∀𝑥 ∈ 𝐴 𝑥 ≤ sup(𝐵, ℝ*, < ))) |
| 26 | 23, 25 | mpbird 257 | 1 ⊢ (𝜑 → sup(𝐴, ℝ*, < ) ≤ sup(𝐵, ℝ*, < )) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∧ w3a 1086 ∈ wcel 2113 ∀wral 3051 ∃wrex 3060 ⊆ wss 3901 class class class wbr 5098 supcsup 9343 ℝ*cxr 11165 < clt 11166 ≤ cle 11167 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2184 ax-ext 2708 ax-sep 5241 ax-nul 5251 ax-pow 5310 ax-pr 5377 ax-un 7680 ax-cnex 11082 ax-resscn 11083 ax-1cn 11084 ax-icn 11085 ax-addcl 11086 ax-addrcl 11087 ax-mulcl 11088 ax-mulrcl 11089 ax-mulcom 11090 ax-addass 11091 ax-mulass 11092 ax-distr 11093 ax-i2m1 11094 ax-1ne0 11095 ax-1rid 11096 ax-rnegex 11097 ax-rrecex 11098 ax-cnre 11099 ax-pre-lttri 11100 ax-pre-lttrn 11101 ax-pre-ltadd 11102 ax-pre-mulgt0 11103 ax-pre-sup 11104 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3061 df-rmo 3350 df-reu 3351 df-rab 3400 df-v 3442 df-sbc 3741 df-csb 3850 df-dif 3904 df-un 3906 df-in 3908 df-ss 3918 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4581 df-pr 4583 df-op 4587 df-uni 4864 df-br 5099 df-opab 5161 df-mpt 5180 df-id 5519 df-po 5532 df-so 5533 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-riota 7315 df-ov 7361 df-oprab 7362 df-mpo 7363 df-er 8635 df-en 8884 df-dom 8885 df-sdom 8886 df-sup 9345 df-pnf 11168 df-mnf 11169 df-xr 11170 df-ltxr 11171 df-le 11172 df-sub 11366 df-neg 11367 |
| This theorem is referenced by: sge0reuz 46691 |
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