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Mirrors > Home > MPE Home > Th. List > sqrlem5 | Structured version Visualization version GIF version |
Description: Lemma for 01sqrex 14813. (Contributed by Mario Carneiro, 10-Jul-2013.) |
Ref | Expression |
---|---|
sqrlem1.1 | ⊢ 𝑆 = {𝑥 ∈ ℝ+ ∣ (𝑥↑2) ≤ 𝐴} |
sqrlem1.2 | ⊢ 𝐵 = sup(𝑆, ℝ, < ) |
sqrlem5.3 | ⊢ 𝑇 = {𝑦 ∣ ∃𝑎 ∈ 𝑆 ∃𝑏 ∈ 𝑆 𝑦 = (𝑎 · 𝑏)} |
Ref | Expression |
---|---|
sqrlem5 | ⊢ ((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) → ((𝑇 ⊆ ℝ ∧ 𝑇 ≠ ∅ ∧ ∃𝑣 ∈ ℝ ∀𝑢 ∈ 𝑇 𝑢 ≤ 𝑣) ∧ (𝐵↑2) = sup(𝑇, ℝ, < ))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | sqrlem1.1 | . . . . . . 7 ⊢ 𝑆 = {𝑥 ∈ ℝ+ ∣ (𝑥↑2) ≤ 𝐴} | |
2 | 1 | ssrab3 3995 | . . . . . 6 ⊢ 𝑆 ⊆ ℝ+ |
3 | 2 | sseli 3896 | . . . . 5 ⊢ (𝑣 ∈ 𝑆 → 𝑣 ∈ ℝ+) |
4 | 3 | rpge0d 12632 | . . . 4 ⊢ (𝑣 ∈ 𝑆 → 0 ≤ 𝑣) |
5 | 4 | rgen 3071 | . . 3 ⊢ ∀𝑣 ∈ 𝑆 0 ≤ 𝑣 |
6 | sqrlem1.2 | . . . 4 ⊢ 𝐵 = sup(𝑆, ℝ, < ) | |
7 | 1, 6 | sqrlem3 14808 | . . 3 ⊢ ((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) → (𝑆 ⊆ ℝ ∧ 𝑆 ≠ ∅ ∧ ∃𝑣 ∈ ℝ ∀𝑧 ∈ 𝑆 𝑧 ≤ 𝑣)) |
8 | sqrlem5.3 | . . . 4 ⊢ 𝑇 = {𝑦 ∣ ∃𝑎 ∈ 𝑆 ∃𝑏 ∈ 𝑆 𝑦 = (𝑎 · 𝑏)} | |
9 | pm4.24 567 | . . . . 5 ⊢ (∀𝑣 ∈ 𝑆 0 ≤ 𝑣 ↔ (∀𝑣 ∈ 𝑆 0 ≤ 𝑣 ∧ ∀𝑣 ∈ 𝑆 0 ≤ 𝑣)) | |
10 | 9 | 3anbi1i 1159 | . . . 4 ⊢ ((∀𝑣 ∈ 𝑆 0 ≤ 𝑣 ∧ (𝑆 ⊆ ℝ ∧ 𝑆 ≠ ∅ ∧ ∃𝑣 ∈ ℝ ∀𝑧 ∈ 𝑆 𝑧 ≤ 𝑣) ∧ (𝑆 ⊆ ℝ ∧ 𝑆 ≠ ∅ ∧ ∃𝑣 ∈ ℝ ∀𝑧 ∈ 𝑆 𝑧 ≤ 𝑣)) ↔ ((∀𝑣 ∈ 𝑆 0 ≤ 𝑣 ∧ ∀𝑣 ∈ 𝑆 0 ≤ 𝑣) ∧ (𝑆 ⊆ ℝ ∧ 𝑆 ≠ ∅ ∧ ∃𝑣 ∈ ℝ ∀𝑧 ∈ 𝑆 𝑧 ≤ 𝑣) ∧ (𝑆 ⊆ ℝ ∧ 𝑆 ≠ ∅ ∧ ∃𝑣 ∈ ℝ ∀𝑧 ∈ 𝑆 𝑧 ≤ 𝑣))) |
11 | 8, 10 | supmullem2 11803 | . . 3 ⊢ ((∀𝑣 ∈ 𝑆 0 ≤ 𝑣 ∧ (𝑆 ⊆ ℝ ∧ 𝑆 ≠ ∅ ∧ ∃𝑣 ∈ ℝ ∀𝑧 ∈ 𝑆 𝑧 ≤ 𝑣) ∧ (𝑆 ⊆ ℝ ∧ 𝑆 ≠ ∅ ∧ ∃𝑣 ∈ ℝ ∀𝑧 ∈ 𝑆 𝑧 ≤ 𝑣)) → (𝑇 ⊆ ℝ ∧ 𝑇 ≠ ∅ ∧ ∃𝑣 ∈ ℝ ∀𝑢 ∈ 𝑇 𝑢 ≤ 𝑣)) |
12 | 5, 7, 7, 11 | mp3an2i 1468 | . 2 ⊢ ((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) → (𝑇 ⊆ ℝ ∧ 𝑇 ≠ ∅ ∧ ∃𝑣 ∈ ℝ ∀𝑢 ∈ 𝑇 𝑢 ≤ 𝑣)) |
13 | 1, 6 | sqrlem4 14809 | . . . . . 6 ⊢ ((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) → (𝐵 ∈ ℝ+ ∧ 𝐵 ≤ 1)) |
14 | rpre 12594 | . . . . . . 7 ⊢ (𝐵 ∈ ℝ+ → 𝐵 ∈ ℝ) | |
15 | 14 | adantr 484 | . . . . . 6 ⊢ ((𝐵 ∈ ℝ+ ∧ 𝐵 ≤ 1) → 𝐵 ∈ ℝ) |
16 | 13, 15 | syl 17 | . . . . 5 ⊢ ((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) → 𝐵 ∈ ℝ) |
17 | 16 | recnd 10861 | . . . 4 ⊢ ((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) → 𝐵 ∈ ℂ) |
18 | 17 | sqvald 13713 | . . 3 ⊢ ((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) → (𝐵↑2) = (𝐵 · 𝐵)) |
19 | 6, 6 | oveq12i 7225 | . . . 4 ⊢ (𝐵 · 𝐵) = (sup(𝑆, ℝ, < ) · sup(𝑆, ℝ, < )) |
20 | 8, 10 | supmul 11804 | . . . . 5 ⊢ ((∀𝑣 ∈ 𝑆 0 ≤ 𝑣 ∧ (𝑆 ⊆ ℝ ∧ 𝑆 ≠ ∅ ∧ ∃𝑣 ∈ ℝ ∀𝑧 ∈ 𝑆 𝑧 ≤ 𝑣) ∧ (𝑆 ⊆ ℝ ∧ 𝑆 ≠ ∅ ∧ ∃𝑣 ∈ ℝ ∀𝑧 ∈ 𝑆 𝑧 ≤ 𝑣)) → (sup(𝑆, ℝ, < ) · sup(𝑆, ℝ, < )) = sup(𝑇, ℝ, < )) |
21 | 5, 7, 7, 20 | mp3an2i 1468 | . . . 4 ⊢ ((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) → (sup(𝑆, ℝ, < ) · sup(𝑆, ℝ, < )) = sup(𝑇, ℝ, < )) |
22 | 19, 21 | syl5eq 2790 | . . 3 ⊢ ((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) → (𝐵 · 𝐵) = sup(𝑇, ℝ, < )) |
23 | 18, 22 | eqtrd 2777 | . 2 ⊢ ((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) → (𝐵↑2) = sup(𝑇, ℝ, < )) |
24 | 12, 23 | jca 515 | 1 ⊢ ((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) → ((𝑇 ⊆ ℝ ∧ 𝑇 ≠ ∅ ∧ ∃𝑣 ∈ ℝ ∀𝑢 ∈ 𝑇 𝑢 ≤ 𝑣) ∧ (𝐵↑2) = sup(𝑇, ℝ, < ))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 399 ∧ w3a 1089 = wceq 1543 ∈ wcel 2110 {cab 2714 ≠ wne 2940 ∀wral 3061 ∃wrex 3062 {crab 3065 ⊆ wss 3866 ∅c0 4237 class class class wbr 5053 (class class class)co 7213 supcsup 9056 ℝcr 10728 0cc0 10729 1c1 10730 · cmul 10734 < clt 10867 ≤ cle 10868 2c2 11885 ℝ+crp 12586 ↑cexp 13635 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2016 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2158 ax-12 2175 ax-ext 2708 ax-sep 5192 ax-nul 5199 ax-pow 5258 ax-pr 5322 ax-un 7523 ax-cnex 10785 ax-resscn 10786 ax-1cn 10787 ax-icn 10788 ax-addcl 10789 ax-addrcl 10790 ax-mulcl 10791 ax-mulrcl 10792 ax-mulcom 10793 ax-addass 10794 ax-mulass 10795 ax-distr 10796 ax-i2m1 10797 ax-1ne0 10798 ax-1rid 10799 ax-rnegex 10800 ax-rrecex 10801 ax-cnre 10802 ax-pre-lttri 10803 ax-pre-lttrn 10804 ax-pre-ltadd 10805 ax-pre-mulgt0 10806 ax-pre-sup 10807 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-3or 1090 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-nf 1792 df-sb 2071 df-mo 2539 df-eu 2568 df-clab 2715 df-cleq 2729 df-clel 2816 df-nfc 2886 df-ne 2941 df-nel 3047 df-ral 3066 df-rex 3067 df-reu 3068 df-rmo 3069 df-rab 3070 df-v 3410 df-sbc 3695 df-csb 3812 df-dif 3869 df-un 3871 df-in 3873 df-ss 3883 df-pss 3885 df-nul 4238 df-if 4440 df-pw 4515 df-sn 4542 df-pr 4544 df-tp 4546 df-op 4548 df-uni 4820 df-iun 4906 df-br 5054 df-opab 5116 df-mpt 5136 df-tr 5162 df-id 5455 df-eprel 5460 df-po 5468 df-so 5469 df-fr 5509 df-we 5511 df-xp 5557 df-rel 5558 df-cnv 5559 df-co 5560 df-dm 5561 df-rn 5562 df-res 5563 df-ima 5564 df-pred 6160 df-ord 6216 df-on 6217 df-lim 6218 df-suc 6219 df-iota 6338 df-fun 6382 df-fn 6383 df-f 6384 df-f1 6385 df-fo 6386 df-f1o 6387 df-fv 6388 df-riota 7170 df-ov 7216 df-oprab 7217 df-mpo 7218 df-om 7645 df-2nd 7762 df-wrecs 8047 df-recs 8108 df-rdg 8146 df-er 8391 df-en 8627 df-dom 8628 df-sdom 8629 df-sup 9058 df-pnf 10869 df-mnf 10870 df-xr 10871 df-ltxr 10872 df-le 10873 df-sub 11064 df-neg 11065 df-div 11490 df-nn 11831 df-2 11893 df-n0 12091 df-z 12177 df-uz 12439 df-rp 12587 df-seq 13575 df-exp 13636 |
This theorem is referenced by: sqrlem6 14811 |
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