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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 3927 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝑥 ∈ ℝ*) |
| 4 | 3 | 3ad2ant1 1142 | . . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐵 ∧ 𝑥 ≤ 𝑦) → 𝑥 ∈ ℝ*) |
| 5 | simp1l 1207 | . . . . . . . 8 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐵 ∧ 𝑥 ≤ 𝑦) → 𝜑) | |
| 6 | simp2 1146 | . . . . . . . 8 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐵 ∧ 𝑥 ≤ 𝑦) → 𝑦 ∈ 𝐵) | |
| 7 | suplesup2.b | . . . . . . . . 9 ⊢ (𝜑 → 𝐵 ⊆ ℝ*) | |
| 8 | 7 | sselda 3927 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐵) → 𝑦 ∈ ℝ*) |
| 9 | 5, 6, 8 | syl2anc 592 | . . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐵 ∧ 𝑥 ≤ 𝑦) → 𝑦 ∈ ℝ*) |
| 10 | supxrcl 13304 | . . . . . . . . 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 1147 | . . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐵 ∧ 𝑥 ≤ 𝑦) → 𝑥 ≤ 𝑦) | |
| 14 | 7 | adantr 483 | . . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐵) → 𝐵 ⊆ ℝ*) |
| 15 | simpr 487 | . . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐵) → 𝑦 ∈ 𝐵) | |
| 16 | supxrub 13313 | . . . . . . . . 9 ⊢ ((𝐵 ⊆ ℝ* ∧ 𝑦 ∈ 𝐵) → 𝑦 ≤ sup(𝐵, ℝ*, < )) | |
| 17 | 14, 15, 16 | syl2anc 592 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐵) → 𝑦 ≤ sup(𝐵, ℝ*, < )) |
| 18 | 5, 6, 17 | syl2anc 592 | . . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐵 ∧ 𝑥 ≤ 𝑦) → 𝑦 ≤ sup(𝐵, ℝ*, < )) |
| 19 | 4, 9, 12, 13, 18 | xrletrd 13150 | . . . . . 6 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐵 ∧ 𝑥 ≤ 𝑦) → 𝑥 ≤ sup(𝐵, ℝ*, < )) |
| 20 | 19 | 3exp 1128 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (𝑦 ∈ 𝐵 → (𝑥 ≤ 𝑦 → 𝑥 ≤ sup(𝐵, ℝ*, < )))) |
| 21 | 20 | rexlimdv 3151 | . . . 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 3144 | . 2 ⊢ (𝜑 → ∀𝑥 ∈ 𝐴 𝑥 ≤ sup(𝐵, ℝ*, < )) |
| 24 | supxrleub 13315 | . . 3 ⊢ ((𝐴 ⊆ ℝ* ∧ sup(𝐵, ℝ*, < ) ∈ ℝ*) → (sup(𝐴, ℝ*, < ) ≤ sup(𝐵, ℝ*, < ) ↔ ∀𝑥 ∈ 𝐴 𝑥 ≤ sup(𝐵, ℝ*, < ))) | |
| 25 | 2, 11, 24 | syl2anc 592 | . 2 ⊢ (𝜑 → (sup(𝐴, ℝ*, < ) ≤ sup(𝐵, ℝ*, < ) ↔ ∀𝑥 ∈ 𝐴 𝑥 ≤ sup(𝐵, ℝ*, < ))) |
| 26 | 23, 25 | mpbird 259 | 1 ⊢ (𝜑 → sup(𝐴, ℝ*, < ) ≤ sup(𝐵, ℝ*, < )) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 208 ∧ wa 398 ∧ w3a 1095 ∈ wcel 2132 ∀wral 3066 ∃wrex 3076 ⊆ wss 3895 class class class wbr 5090 supcsup 9372 ℝ*cxr 11201 < clt 11202 ≤ cle 11203 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1805 ax-4 1819 ax-5 1920 ax-6 1977 ax-7 2018 ax-8 2134 ax-9 2142 ax-10 2165 ax-11 2181 ax-12 2202 ax-ext 2724 ax-sep 5236 ax-nul 5246 ax-pow 5312 ax-pr 5380 ax-un 7703 ax-cnex 11115 ax-resscn 11116 ax-1cn 11117 ax-icn 11118 ax-addcl 11119 ax-addrcl 11120 ax-mulcl 11121 ax-mulrcl 11122 ax-mulcom 11123 ax-addass 11124 ax-mulass 11125 ax-distr 11126 ax-i2m1 11127 ax-1ne0 11128 ax-1rid 11129 ax-rnegex 11130 ax-rrecex 11131 ax-cnre 11132 ax-pre-lttri 11133 ax-pre-lttrn 11134 ax-pre-ltadd 11135 ax-pre-mulgt0 11136 ax-pre-sup 11137 |
| This theorem depends on definitions: df-bi 209 df-an 399 df-or 857 df-3or 1096 df-3an 1097 df-tru 1553 df-fal 1563 df-ex 1790 df-nf 1794 df-sb 2081 df-mo 2556 df-eu 2586 df-clab 2731 df-cleq 2744 df-clel 2827 df-nfc 2901 df-ne 2948 df-nel 3052 df-ral 3067 df-rex 3077 df-rmo 3357 df-reu 3358 df-rab 3405 df-v 3446 df-sbc 3736 df-csb 3844 df-dif 3898 df-un 3900 df-in 3902 df-ss 3912 df-nul 4277 df-if 4471 df-pw 4547 df-sn 4573 df-pr 4575 df-op 4579 df-uni 4856 df-br 5091 df-opab 5153 df-mpt 5172 df-id 5531 df-po 5544 df-so 5545 df-xp 5642 df-rel 5643 df-cnv 5644 df-co 5645 df-dm 5646 df-rn 5647 df-res 5648 df-ima 5649 df-iota 6462 df-fun 6508 df-fn 6509 df-f 6510 df-f1 6511 df-fo 6512 df-f1o 6513 df-fv 6514 df-riota 7338 df-ov 7384 df-oprab 7385 df-mpo 7386 df-er 8662 df-en 8913 df-dom 8914 df-sdom 8915 df-sup 9374 df-pnf 11204 df-mnf 11205 df-xr 11206 df-ltxr 11207 df-le 11208 df-sub 11402 df-neg 11403 |
| This theorem is referenced by: sge0reuz 46959 |
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