| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > 01sqrexlem1 | Structured version Visualization version GIF version | ||
| Description: Lemma for 01sqrex 15296. (Contributed by Mario Carneiro, 10-Jul-2013.) |
| Ref | Expression |
|---|---|
| 01sqrexlem1.1 | ⊢ 𝑆 = {𝑥 ∈ ℝ+ ∣ (𝑥↑2) ≤ 𝐴} |
| 01sqrexlem1.2 | ⊢ 𝐵 = sup(𝑆, ℝ, < ) |
| Ref | Expression |
|---|---|
| 01sqrexlem1 | ⊢ ((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) → ∀𝑦 ∈ 𝑆 𝑦 ≤ 1) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | oveq1 7417 | . . . . 5 ⊢ (𝑥 = 𝑦 → (𝑥↑2) = (𝑦↑2)) | |
| 2 | 1 | breq1d 5119 | . . . 4 ⊢ (𝑥 = 𝑦 → ((𝑥↑2) ≤ 𝐴 ↔ (𝑦↑2) ≤ 𝐴)) |
| 3 | 01sqrexlem1.1 | . . . 4 ⊢ 𝑆 = {𝑥 ∈ ℝ+ ∣ (𝑥↑2) ≤ 𝐴} | |
| 4 | 2, 3 | elrab2 3654 | . . 3 ⊢ (𝑦 ∈ 𝑆 ↔ (𝑦 ∈ ℝ+ ∧ (𝑦↑2) ≤ 𝐴)) |
| 5 | simprr 784 | . . . . . . 7 ⊢ (((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) ∧ (𝑦 ∈ ℝ+ ∧ (𝑦↑2) ≤ 𝐴)) → (𝑦↑2) ≤ 𝐴) | |
| 6 | simplr 780 | . . . . . . 7 ⊢ (((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) ∧ (𝑦 ∈ ℝ+ ∧ (𝑦↑2) ≤ 𝐴)) → 𝐴 ≤ 1) | |
| 7 | rpre 13020 | . . . . . . . . . 10 ⊢ (𝑦 ∈ ℝ+ → 𝑦 ∈ ℝ) | |
| 8 | 7 | ad2antrl 740 | . . . . . . . . 9 ⊢ (((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) ∧ (𝑦 ∈ ℝ+ ∧ (𝑦↑2) ≤ 𝐴)) → 𝑦 ∈ ℝ) |
| 9 | 8 | resqcld 14157 | . . . . . . . 8 ⊢ (((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) ∧ (𝑦 ∈ ℝ+ ∧ (𝑦↑2) ≤ 𝐴)) → (𝑦↑2) ∈ ℝ) |
| 10 | rpre 13020 | . . . . . . . . 9 ⊢ (𝐴 ∈ ℝ+ → 𝐴 ∈ ℝ) | |
| 11 | 10 | ad2antrr 738 | . . . . . . . 8 ⊢ (((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) ∧ (𝑦 ∈ ℝ+ ∧ (𝑦↑2) ≤ 𝐴)) → 𝐴 ∈ ℝ) |
| 12 | 1re 11203 | . . . . . . . . 9 ⊢ 1 ∈ ℝ | |
| 13 | letr 11299 | . . . . . . . . 9 ⊢ (((𝑦↑2) ∈ ℝ ∧ 𝐴 ∈ ℝ ∧ 1 ∈ ℝ) → (((𝑦↑2) ≤ 𝐴 ∧ 𝐴 ≤ 1) → (𝑦↑2) ≤ 1)) | |
| 14 | 12, 13 | mp3an3 1479 | . . . . . . . 8 ⊢ (((𝑦↑2) ∈ ℝ ∧ 𝐴 ∈ ℝ) → (((𝑦↑2) ≤ 𝐴 ∧ 𝐴 ≤ 1) → (𝑦↑2) ≤ 1)) |
| 15 | 9, 11, 14 | syl2anc 595 | . . . . . . 7 ⊢ (((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) ∧ (𝑦 ∈ ℝ+ ∧ (𝑦↑2) ≤ 𝐴)) → (((𝑦↑2) ≤ 𝐴 ∧ 𝐴 ≤ 1) → (𝑦↑2) ≤ 1)) |
| 16 | 5, 6, 15 | mp2and 711 | . . . . . 6 ⊢ (((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) ∧ (𝑦 ∈ ℝ+ ∧ (𝑦↑2) ≤ 𝐴)) → (𝑦↑2) ≤ 1) |
| 17 | sq1 14227 | . . . . . 6 ⊢ (1↑2) = 1 | |
| 18 | 16, 17 | breqtrrdi 5153 | . . . . 5 ⊢ (((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) ∧ (𝑦 ∈ ℝ+ ∧ (𝑦↑2) ≤ 𝐴)) → (𝑦↑2) ≤ (1↑2)) |
| 19 | rpge0 13025 | . . . . . . 7 ⊢ (𝑦 ∈ ℝ+ → 0 ≤ 𝑦) | |
| 20 | 19 | ad2antrl 740 | . . . . . 6 ⊢ (((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) ∧ (𝑦 ∈ ℝ+ ∧ (𝑦↑2) ≤ 𝐴)) → 0 ≤ 𝑦) |
| 21 | 0le1 11732 | . . . . . . 7 ⊢ 0 ≤ 1 | |
| 22 | le2sq 14166 | . . . . . . 7 ⊢ (((𝑦 ∈ ℝ ∧ 0 ≤ 𝑦) ∧ (1 ∈ ℝ ∧ 0 ≤ 1)) → (𝑦 ≤ 1 ↔ (𝑦↑2) ≤ (1↑2))) | |
| 23 | 12, 21, 22 | mpanr12 717 | . . . . . 6 ⊢ ((𝑦 ∈ ℝ ∧ 0 ≤ 𝑦) → (𝑦 ≤ 1 ↔ (𝑦↑2) ≤ (1↑2))) |
| 24 | 8, 20, 23 | syl2anc 595 | . . . . 5 ⊢ (((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) ∧ (𝑦 ∈ ℝ+ ∧ (𝑦↑2) ≤ 𝐴)) → (𝑦 ≤ 1 ↔ (𝑦↑2) ≤ (1↑2))) |
| 25 | 18, 24 | mpbird 260 | . . . 4 ⊢ (((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) ∧ (𝑦 ∈ ℝ+ ∧ (𝑦↑2) ≤ 𝐴)) → 𝑦 ≤ 1) |
| 26 | 25 | ex 417 | . . 3 ⊢ ((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) → ((𝑦 ∈ ℝ+ ∧ (𝑦↑2) ≤ 𝐴) → 𝑦 ≤ 1)) |
| 27 | 4, 26 | biimtrid 245 | . 2 ⊢ ((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) → (𝑦 ∈ 𝑆 → 𝑦 ≤ 1)) |
| 28 | 27 | ralrimiv 3156 | 1 ⊢ ((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) → ∀𝑦 ∈ 𝑆 𝑦 ≤ 1) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 209 ∧ wa 400 = wceq 1570 ∈ wcel 2143 ∀wral 3079 {crab 3416 class class class wbr 5109 (class class class)co 7410 supcsup 9396 ℝcr 11094 0cc0 11095 1c1 11096 < clt 11238 ≤ cle 11239 2c2 12290 ℝ+crp 13011 ↑cexp 14093 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5257 ax-nul 5269 ax-pow 5336 ax-pr 5404 ax-un 7732 ax-cnex 11151 ax-resscn 11152 ax-1cn 11153 ax-icn 11154 ax-addcl 11155 ax-addrcl 11156 ax-mulcl 11157 ax-mulrcl 11158 ax-mulcom 11159 ax-addass 11160 ax-mulass 11161 ax-distr 11162 ax-i2m1 11163 ax-1ne0 11164 ax-1rid 11165 ax-rnegex 11166 ax-rrecex 11167 ax-cnre 11168 ax-pre-lttri 11169 ax-pre-lttrn 11170 ax-pre-ltadd 11171 ax-pre-mulgt0 11172 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-nel 3065 df-ral 3080 df-rex 3090 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3457 df-sbc 3745 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-pss 3925 df-nul 4287 df-if 4488 df-pw 4564 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4873 df-iun 4958 df-br 5110 df-opab 5174 df-mpt 5193 df-tr 5219 df-id 5556 df-eprel 5561 df-po 5569 df-so 5570 df-fr 5614 df-we 5616 df-xp 5667 df-rel 5668 df-cnv 5669 df-co 5670 df-dm 5671 df-rn 5672 df-res 5673 df-ima 5674 df-pred 6302 df-ord 6363 df-on 6364 df-lim 6365 df-suc 6366 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7367 df-ov 7413 df-oprab 7414 df-mpo 7415 df-om 7859 df-2nd 7983 df-frecs 8274 df-wrecs 8305 df-recs 8354 df-rdg 8393 df-er 8690 df-en 8940 df-dom 8941 df-sdom 8942 df-pnf 11240 df-mnf 11241 df-xr 11242 df-ltxr 11243 df-le 11244 df-sub 11438 df-neg 11439 df-div 11867 df-nn 12229 df-2 12298 df-n0 12500 df-z 12587 df-uz 12858 df-rp 13012 df-seq 14034 df-exp 14094 |
| This theorem is referenced by: 01sqrexlem3 15291 01sqrexlem4 15292 |
| Copyright terms: Public domain | W3C validator |