| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > 01sqrexlem1 | Structured version Visualization version GIF version | ||
| Description: Lemma for 01sqrex 15459. (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 7458 | . . . . 5 ⊢ (𝑥 = 𝑦 → (𝑥↑2) = (𝑦↑2)) | |
| 2 | 1 | breq1d 5118 | . . . 4 ⊢ (𝑥 = 𝑦 → ((𝑥↑2) ≤ 𝐴 ↔ (𝑦↑2) ≤ 𝐴)) |
| 3 | 01sqrexlem1.1 | . . . 4 ⊢ 𝑆 = {𝑥 ∈ ℝ+ ∣ (𝑥↑2) ≤ 𝐴} | |
| 4 | 2, 3 | elrab2 3652 | . . 3 ⊢ (𝑦 ∈ 𝑆 ↔ (𝑦 ∈ ℝ+ ∧ (𝑦↑2) ≤ 𝐴)) |
| 5 | simprr 785 | . . . . . . 7 ⊢ (((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) ∧ (𝑦 ∈ ℝ+ ∧ (𝑦↑2) ≤ 𝐴)) → (𝑦↑2) ≤ 𝐴) | |
| 6 | simplr 781 | . . . . . . 7 ⊢ (((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) ∧ (𝑦 ∈ ℝ+ ∧ (𝑦↑2) ≤ 𝐴)) → 𝐴 ≤ 1) | |
| 7 | rpre 13169 | . . . . . . . . . 10 ⊢ (𝑦 ∈ ℝ+ → 𝑦 ∈ ℝ) | |
| 8 | 7 | ad2antrl 741 | . . . . . . . . 9 ⊢ (((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) ∧ (𝑦 ∈ ℝ+ ∧ (𝑦↑2) ≤ 𝐴)) → 𝑦 ∈ ℝ) |
| 9 | 8 | resqcld 14308 | . . . . . . . 8 ⊢ (((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) ∧ (𝑦 ∈ ℝ+ ∧ (𝑦↑2) ≤ 𝐴)) → (𝑦↑2) ∈ ℝ) |
| 10 | rpre 13169 | . . . . . . . . 9 ⊢ (𝐴 ∈ ℝ+ → 𝐴 ∈ ℝ) | |
| 11 | 10 | ad2antrr 739 | . . . . . . . 8 ⊢ (((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) ∧ (𝑦 ∈ ℝ+ ∧ (𝑦↑2) ≤ 𝐴)) → 𝐴 ∈ ℝ) |
| 12 | 1re 11347 | . . . . . . . . 9 ⊢ 1 ∈ ℝ | |
| 13 | letr 11443 | . . . . . . . . 9 ⊢ (((𝑦↑2) ∈ ℝ ∧ 𝐴 ∈ ℝ ∧ 1 ∈ ℝ) → (((𝑦↑2) ≤ 𝐴 ∧ 𝐴 ≤ 1) → (𝑦↑2) ≤ 1)) | |
| 14 | 12, 13 | mp3an3 1480 | . . . . . . . 8 ⊢ (((𝑦↑2) ∈ ℝ ∧ 𝐴 ∈ ℝ) → (((𝑦↑2) ≤ 𝐴 ∧ 𝐴 ≤ 1) → (𝑦↑2) ≤ 1)) |
| 15 | 9, 11, 14 | syl2anc 596 | . . . . . . 7 ⊢ (((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) ∧ (𝑦 ∈ ℝ+ ∧ (𝑦↑2) ≤ 𝐴)) → (((𝑦↑2) ≤ 𝐴 ∧ 𝐴 ≤ 1) → (𝑦↑2) ≤ 1)) |
| 16 | 5, 6, 15 | mp2and 712 | . . . . . 6 ⊢ (((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) ∧ (𝑦 ∈ ℝ+ ∧ (𝑦↑2) ≤ 𝐴)) → (𝑦↑2) ≤ 1) |
| 17 | sq1 14378 | . . . . . 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 13174 | . . . . . . 7 ⊢ (𝑦 ∈ ℝ+ → 0 ≤ 𝑦) | |
| 20 | 19 | ad2antrl 741 | . . . . . 6 ⊢ (((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) ∧ (𝑦 ∈ ℝ+ ∧ (𝑦↑2) ≤ 𝐴)) → 0 ≤ 𝑦) |
| 21 | 0le1 11879 | . . . . . . 7 ⊢ 0 ≤ 1 | |
| 22 | le2sq 14317 | . . . . . . 7 ⊢ (((𝑦 ∈ ℝ ∧ 0 ≤ 𝑦) ∧ (1 ∈ ℝ ∧ 0 ≤ 1)) → (𝑦 ≤ 1 ↔ (𝑦↑2) ≤ (1↑2))) | |
| 23 | 12, 21, 22 | mpanr12 718 | . . . . . 6 ⊢ ((𝑦 ∈ ℝ ∧ 0 ≤ 𝑦) → (𝑦 ≤ 1 ↔ (𝑦↑2) ≤ (1↑2))) |
| 24 | 8, 20, 23 | syl2anc 596 | . . . . 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 418 | . . 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 3157 | 1 ⊢ ((𝐴 ∈ ℝ+ ∧ 𝐴 ≤ 1) → ∀𝑦 ∈ 𝑆 𝑦 ≤ 1) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 = wceq 1570 ∈ wcel 2147 ∀wral 3080 {crab 3416 class class class wbr 5108 (class class class)co 7451 supcsup 9469 ℝcr 11238 0cc0 11239 1c1 11240 < clt 11382 ≤ cle 11383 2c2 12437 ℝ+crp 13160 ↑cexp 14244 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5255 ax-nul 5266 ax-pow 5334 ax-pr 5398 ax-un 7783 ax-cnex 11295 ax-resscn 11296 ax-1cn 11297 ax-icn 11298 ax-addcl 11299 ax-addrcl 11300 ax-mulcl 11301 ax-mulrcl 11302 ax-mulcom 11303 ax-addass 11304 ax-mulass 11305 ax-distr 11306 ax-i2m1 11307 ax-1ne0 11308 ax-1rid 11309 ax-rnegex 11310 ax-rrecex 11311 ax-cnre 11312 ax-pre-lttri 11313 ax-pre-lttrn 11314 ax-pre-ltadd 11315 ax-pre-mulgt0 11316 |
| 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 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4841 df-uni 4873 df-iun 4958 df-br 5109 df-opab 5174 df-mpt 5193 df-tr 5219 df-id 5553 df-eprel 5558 df-po 5566 df-so 5567 df-fr 5611 df-we 5613 df-xp 5664 df-rel 5665 df-cnv 5666 df-co 5667 df-dm 5668 df-rn 5669 df-res 5670 df-ima 5671 df-pred 6330 df-ord 6391 df-on 6392 df-lim 6393 df-suc 6394 df-iota 6520 df-fun 6568 df-fn 6569 df-f 6570 df-f1 6571 df-fo 6572 df-f1o 6573 df-fv 6574 df-riota 7408 df-ov 7454 df-oprab 7455 df-mpo 7456 df-om 7912 df-2nd 8036 df-frecs 8337 df-wrecs 8368 df-recs 8417 df-rdg 8456 df-er 8755 df-en 9012 df-dom 9013 df-sdom 9014 df-pnf 11384 df-mnf 11385 df-xr 11386 df-ltxr 11387 df-le 11388 df-sub 11582 df-neg 11583 df-div 12014 df-nn 12376 df-2 12445 df-n0 12647 df-z 12734 df-uz 13006 df-rp 13161 df-seq 14185 df-exp 14245 |
| This theorem is used by: 01sqrexlem3 15454 01sqrexlem4 15455 |
| Copyright terms: Public domain | W3C validator |