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Mirrors > Home > MPE Home > Th. List > sqrlem5 | Structured version Visualization version GIF version |
Description: Lemma for 01sqrex 14961. (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 4015 | . . . . . 6 ⊢ 𝑆 ⊆ ℝ+ |
3 | 2 | sseli 3917 | . . . . 5 ⊢ (𝑣 ∈ 𝑆 → 𝑣 ∈ ℝ+) |
4 | 3 | rpge0d 12776 | . . . 4 ⊢ (𝑣 ∈ 𝑆 → 0 ≤ 𝑣) |
5 | 4 | rgen 3074 | . . 3 ⊢ ∀𝑣 ∈ 𝑆 0 ≤ 𝑣 |
6 | sqrlem1.2 | . . . 4 ⊢ 𝐵 = sup(𝑆, ℝ, < ) | |
7 | 1, 6 | sqrlem3 14956 | . . 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 | pm4.24 564 | . . . . 5 ⊢ (∀𝑣 ∈ 𝑆 0 ≤ 𝑣 ↔ (∀𝑣 ∈ 𝑆 0 ≤ 𝑣 ∧ ∀𝑣 ∈ 𝑆 0 ≤ 𝑣)) | |
10 | 9 | 3anbi1i 1156 | . . . 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 11946 | . . 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 1465 | . 2 ⊢ ((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) → (𝑇 ⊆ ℝ ∧ 𝑇 ≠ ∅ ∧ ∃𝑣 ∈ ℝ ∀𝑢 ∈ 𝑇 𝑢 ≤ 𝑣)) |
13 | 1, 6 | sqrlem4 14957 | . . . . . 6 ⊢ ((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) → (𝐵 ∈ ℝ+ ∧ 𝐵 ≤ 1)) |
14 | rpre 12738 | . . . . . . 7 ⊢ (𝐵 ∈ ℝ+ → 𝐵 ∈ ℝ) | |
15 | 14 | adantr 481 | . . . . . 6 ⊢ ((𝐵 ∈ ℝ+ ∧ 𝐵 ≤ 1) → 𝐵 ∈ ℝ) |
16 | 13, 15 | syl 17 | . . . . 5 ⊢ ((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) → 𝐵 ∈ ℝ) |
17 | 16 | recnd 11003 | . . . 4 ⊢ ((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) → 𝐵 ∈ ℂ) |
18 | 17 | sqvald 13861 | . . 3 ⊢ ((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) → (𝐵↑2) = (𝐵 · 𝐵)) |
19 | 6, 6 | oveq12i 7287 | . . . 4 ⊢ (𝐵 · 𝐵) = (sup(𝑆, ℝ, < ) · sup(𝑆, ℝ, < )) |
20 | 8, 10 | supmul 11947 | . . . . 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 1465 | . . . 4 ⊢ ((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) → (sup(𝑆, ℝ, < ) · sup(𝑆, ℝ, < )) = sup(𝑇, ℝ, < )) |
22 | 19, 21 | eqtrid 2790 | . . 3 ⊢ ((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) → (𝐵 · 𝐵) = sup(𝑇, ℝ, < )) |
23 | 18, 22 | eqtrd 2778 | . 2 ⊢ ((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) → (𝐵↑2) = sup(𝑇, ℝ, < )) |
24 | 12, 23 | jca 512 | 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 396 ∧ w3a 1086 = wceq 1539 ∈ wcel 2106 {cab 2715 ≠ wne 2943 ∀wral 3064 ∃wrex 3065 {crab 3068 ⊆ wss 3887 ∅c0 4256 class class class wbr 5074 (class class class)co 7275 supcsup 9199 ℝcr 10870 0cc0 10871 1c1 10872 · cmul 10876 < clt 11009 ≤ cle 11010 2c2 12028 ℝ+crp 12730 ↑cexp 13782 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 ax-cnex 10927 ax-resscn 10928 ax-1cn 10929 ax-icn 10930 ax-addcl 10931 ax-addrcl 10932 ax-mulcl 10933 ax-mulrcl 10934 ax-mulcom 10935 ax-addass 10936 ax-mulass 10937 ax-distr 10938 ax-i2m1 10939 ax-1ne0 10940 ax-1rid 10941 ax-rnegex 10942 ax-rrecex 10943 ax-cnre 10944 ax-pre-lttri 10945 ax-pre-lttrn 10946 ax-pre-ltadd 10947 ax-pre-mulgt0 10948 ax-pre-sup 10949 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-nel 3050 df-ral 3069 df-rex 3070 df-rmo 3071 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-pss 3906 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-iun 4926 df-br 5075 df-opab 5137 df-mpt 5158 df-tr 5192 df-id 5489 df-eprel 5495 df-po 5503 df-so 5504 df-fr 5544 df-we 5546 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-pred 6202 df-ord 6269 df-on 6270 df-lim 6271 df-suc 6272 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-riota 7232 df-ov 7278 df-oprab 7279 df-mpo 7280 df-om 7713 df-2nd 7832 df-frecs 8097 df-wrecs 8128 df-recs 8202 df-rdg 8241 df-er 8498 df-en 8734 df-dom 8735 df-sdom 8736 df-sup 9201 df-pnf 11011 df-mnf 11012 df-xr 11013 df-ltxr 11014 df-le 11015 df-sub 11207 df-neg 11208 df-div 11633 df-nn 11974 df-2 12036 df-n0 12234 df-z 12320 df-uz 12583 df-rp 12731 df-seq 13722 df-exp 13783 |
This theorem is referenced by: sqrlem6 14959 |
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