| Mathbox for Glauco Siliprandi |
< Previous
Next >
Nearby theorems |
||
| 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 3931 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝑥 ∈ ℝ*) |
| 4 | 3 | 3ad2ant1 1151 | . . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐵 ∧ 𝑥 ≤ 𝑦) → 𝑥 ∈ ℝ*) |
| 5 | simp1l 1216 | . . . . . . . 8 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐵 ∧ 𝑥 ≤ 𝑦) → 𝜑) | |
| 6 | simp2 1155 | . . . . . . . 8 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐵 ∧ 𝑥 ≤ 𝑦) → 𝑦 ∈ 𝐵) | |
| 7 | suplesup2.b | . . . . . . . . 9 ⊢ (𝜑 → 𝐵 ⊆ ℝ*) | |
| 8 | 7 | sselda 3931 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐵) → 𝑦 ∈ ℝ*) |
| 9 | 5, 6, 8 | syl2anc 596 | . . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐵 ∧ 𝑥 ≤ 𝑦) → 𝑦 ∈ ℝ*) |
| 10 | supxrcl 13438 | . . . . . . . . 9 ⊢ (𝐵 ⊆ ℝ* → sup(𝐵, ℝ*, < ) ∈ ℝ*) | |
| 11 | 7, 10 | syl 18 | . . . . . . . 8 ⊢ (𝜑 → sup(𝐵, ℝ*, < ) ∈ ℝ*) |
| 12 | 5, 11 | syl 18 | . . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐵 ∧ 𝑥 ≤ 𝑦) → sup(𝐵, ℝ*, < ) ∈ ℝ*) |
| 13 | simp3 1156 | . . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐵 ∧ 𝑥 ≤ 𝑦) → 𝑥 ≤ 𝑦) | |
| 14 | 7 | adantr 486 | . . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐵) → 𝐵 ⊆ ℝ*) |
| 15 | simpr 490 | . . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐵) → 𝑦 ∈ 𝐵) | |
| 16 | supxrub 13447 | . . . . . . . . 9 ⊢ ((𝐵 ⊆ ℝ* ∧ 𝑦 ∈ 𝐵) → 𝑦 ≤ sup(𝐵, ℝ*, < )) | |
| 17 | 14, 15, 16 | syl2anc 596 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐵) → 𝑦 ≤ sup(𝐵, ℝ*, < )) |
| 18 | 5, 6, 17 | syl2anc 596 | . . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐵 ∧ 𝑥 ≤ 𝑦) → 𝑦 ≤ sup(𝐵, ℝ*, < )) |
| 19 | 4, 9, 12, 13, 18 | xrletrd 13284 | . . . . . 6 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 ∈ 𝐵 ∧ 𝑥 ≤ 𝑦) → 𝑥 ≤ sup(𝐵, ℝ*, < )) |
| 20 | 19 | 3exp 1137 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (𝑦 ∈ 𝐵 → (𝑥 ≤ 𝑦 → 𝑥 ≤ sup(𝐵, ℝ*, < )))) |
| 21 | 20 | rexlimdv 3162 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (∃𝑦 ∈ 𝐵 𝑥 ≤ 𝑦 → 𝑥 ≤ sup(𝐵, ℝ*, < ))) |
| 22 | 1, 21 | mpd 16 | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝑥 ≤ sup(𝐵, ℝ*, < )) |
| 23 | 22 | ralrimiva 3155 | . 2 ⊢ (𝜑 → ∀𝑥 ∈ 𝐴 𝑥 ≤ sup(𝐵, ℝ*, < )) |
| 24 | supxrleub 13449 | . . 3 ⊢ ((𝐴 ⊆ ℝ* ∧ sup(𝐵, ℝ*, < ) ∈ ℝ*) → (sup(𝐴, ℝ*, < ) ≤ sup(𝐵, ℝ*, < ) ↔ ∀𝑥 ∈ 𝐴 𝑥 ≤ sup(𝐵, ℝ*, < ))) | |
| 25 | 2, 11, 24 | syl2anc 596 | . 2 ⊢ (𝜑 → (sup(𝐴, ℝ*, < ) ≤ sup(𝐵, ℝ*, < ) ↔ ∀𝑥 ∈ 𝐴 𝑥 ≤ sup(𝐵, ℝ*, < ))) |
| 26 | 23, 25 | mpbird 260 | 1 ⊢ (𝜑 → sup(𝐴, ℝ*, < ) ≤ sup(𝐵, ℝ*, < )) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 ∧ w3a 1103 ∈ wcel 2145 ∀wral 3077 ∃wrex 3087 ⊆ wss 3899 class class class wbr 5103 supcsup 9425 ℝ*cxr 11335 < clt 11336 ≤ cle 11337 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7749 ax-cnex 11249 ax-resscn 11250 ax-1cn 11251 ax-icn 11252 ax-addcl 11253 ax-addrcl 11254 ax-mulcl 11255 ax-mulrcl 11256 ax-mulcom 11257 ax-addass 11258 ax-mulass 11259 ax-distr 11260 ax-i2m1 11261 ax-1ne0 11262 ax-1rid 11263 ax-rnegex 11264 ax-rrecex 11265 ax-cnre 11266 ax-pre-lttri 11267 ax-pre-lttrn 11268 ax-pre-ltadd 11269 ax-pre-mulgt0 11270 ax-pre-sup 11271 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5104 df-opab 5168 df-mpt 5187 df-id 5546 df-po 5559 df-so 5560 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7375 df-ov 7421 df-oprab 7422 df-mpo 7423 df-er 8710 df-en 8967 df-dom 8968 df-sdom 8969 df-sup 9427 df-pnf 11338 df-mnf 11339 df-xr 11340 df-ltxr 11341 df-le 11342 df-sub 11536 df-neg 11537 |
| This theorem is used by: sge0reuz 47426 |
| Copyright terms: Public domain | W3C validator |