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Mirrors > Home > ILE Home > Th. List > 4sqlem6 | GIF version |
Description: Lemma for 4sq (not yet proved here) . (Contributed by Mario Carneiro, 15-Jul-2014.) |
Ref | Expression |
---|---|
4sqlem5.2 | ⊢ (𝜑 → 𝐴 ∈ ℤ) |
4sqlem5.3 | ⊢ (𝜑 → 𝑀 ∈ ℕ) |
4sqlem5.4 | ⊢ 𝐵 = (((𝐴 + (𝑀 / 2)) mod 𝑀) − (𝑀 / 2)) |
Ref | Expression |
---|---|
4sqlem6 | ⊢ (𝜑 → (-(𝑀 / 2) ≤ 𝐵 ∧ 𝐵 < (𝑀 / 2))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 0red 7921 | . . . 4 ⊢ (𝜑 → 0 ∈ ℝ) | |
2 | 4sqlem5.2 | . . . . . . . 8 ⊢ (𝜑 → 𝐴 ∈ ℤ) | |
3 | zq 9585 | . . . . . . . 8 ⊢ (𝐴 ∈ ℤ → 𝐴 ∈ ℚ) | |
4 | 2, 3 | syl 14 | . . . . . . 7 ⊢ (𝜑 → 𝐴 ∈ ℚ) |
5 | 4sqlem5.3 | . . . . . . . . 9 ⊢ (𝜑 → 𝑀 ∈ ℕ) | |
6 | 5 | nnzd 9333 | . . . . . . . 8 ⊢ (𝜑 → 𝑀 ∈ ℤ) |
7 | 2nn 9039 | . . . . . . . 8 ⊢ 2 ∈ ℕ | |
8 | znq 9583 | . . . . . . . 8 ⊢ ((𝑀 ∈ ℤ ∧ 2 ∈ ℕ) → (𝑀 / 2) ∈ ℚ) | |
9 | 6, 7, 8 | sylancl 411 | . . . . . . 7 ⊢ (𝜑 → (𝑀 / 2) ∈ ℚ) |
10 | qaddcl 9594 | . . . . . . 7 ⊢ ((𝐴 ∈ ℚ ∧ (𝑀 / 2) ∈ ℚ) → (𝐴 + (𝑀 / 2)) ∈ ℚ) | |
11 | 4, 9, 10 | syl2anc 409 | . . . . . 6 ⊢ (𝜑 → (𝐴 + (𝑀 / 2)) ∈ ℚ) |
12 | nnq 9592 | . . . . . . 7 ⊢ (𝑀 ∈ ℕ → 𝑀 ∈ ℚ) | |
13 | 5, 12 | syl 14 | . . . . . 6 ⊢ (𝜑 → 𝑀 ∈ ℚ) |
14 | 5 | nngt0d 8922 | . . . . . 6 ⊢ (𝜑 → 0 < 𝑀) |
15 | 11, 13, 14 | modqcld 10284 | . . . . 5 ⊢ (𝜑 → ((𝐴 + (𝑀 / 2)) mod 𝑀) ∈ ℚ) |
16 | qre 9584 | . . . . 5 ⊢ (((𝐴 + (𝑀 / 2)) mod 𝑀) ∈ ℚ → ((𝐴 + (𝑀 / 2)) mod 𝑀) ∈ ℝ) | |
17 | 15, 16 | syl 14 | . . . 4 ⊢ (𝜑 → ((𝐴 + (𝑀 / 2)) mod 𝑀) ∈ ℝ) |
18 | 5 | nnred 8891 | . . . . 5 ⊢ (𝜑 → 𝑀 ∈ ℝ) |
19 | 18 | rehalfcld 9124 | . . . 4 ⊢ (𝜑 → (𝑀 / 2) ∈ ℝ) |
20 | modqge0 10288 | . . . . 5 ⊢ (((𝐴 + (𝑀 / 2)) ∈ ℚ ∧ 𝑀 ∈ ℚ ∧ 0 < 𝑀) → 0 ≤ ((𝐴 + (𝑀 / 2)) mod 𝑀)) | |
21 | 11, 13, 14, 20 | syl3anc 1233 | . . . 4 ⊢ (𝜑 → 0 ≤ ((𝐴 + (𝑀 / 2)) mod 𝑀)) |
22 | 1, 17, 19, 21 | lesub1dd 8480 | . . 3 ⊢ (𝜑 → (0 − (𝑀 / 2)) ≤ (((𝐴 + (𝑀 / 2)) mod 𝑀) − (𝑀 / 2))) |
23 | df-neg 8093 | . . 3 ⊢ -(𝑀 / 2) = (0 − (𝑀 / 2)) | |
24 | 4sqlem5.4 | . . 3 ⊢ 𝐵 = (((𝐴 + (𝑀 / 2)) mod 𝑀) − (𝑀 / 2)) | |
25 | 22, 23, 24 | 3brtr4g 4023 | . 2 ⊢ (𝜑 → -(𝑀 / 2) ≤ 𝐵) |
26 | modqlt 10289 | . . . . . 6 ⊢ (((𝐴 + (𝑀 / 2)) ∈ ℚ ∧ 𝑀 ∈ ℚ ∧ 0 < 𝑀) → ((𝐴 + (𝑀 / 2)) mod 𝑀) < 𝑀) | |
27 | 11, 13, 14, 26 | syl3anc 1233 | . . . . 5 ⊢ (𝜑 → ((𝐴 + (𝑀 / 2)) mod 𝑀) < 𝑀) |
28 | 5 | nncnd 8892 | . . . . . 6 ⊢ (𝜑 → 𝑀 ∈ ℂ) |
29 | 28 | 2halvesd 9123 | . . . . 5 ⊢ (𝜑 → ((𝑀 / 2) + (𝑀 / 2)) = 𝑀) |
30 | 27, 29 | breqtrrd 4017 | . . . 4 ⊢ (𝜑 → ((𝐴 + (𝑀 / 2)) mod 𝑀) < ((𝑀 / 2) + (𝑀 / 2))) |
31 | 17, 19, 19 | ltsubaddd 8460 | . . . 4 ⊢ (𝜑 → ((((𝐴 + (𝑀 / 2)) mod 𝑀) − (𝑀 / 2)) < (𝑀 / 2) ↔ ((𝐴 + (𝑀 / 2)) mod 𝑀) < ((𝑀 / 2) + (𝑀 / 2)))) |
32 | 30, 31 | mpbird 166 | . . 3 ⊢ (𝜑 → (((𝐴 + (𝑀 / 2)) mod 𝑀) − (𝑀 / 2)) < (𝑀 / 2)) |
33 | 24, 32 | eqbrtrid 4024 | . 2 ⊢ (𝜑 → 𝐵 < (𝑀 / 2)) |
34 | 25, 33 | jca 304 | 1 ⊢ (𝜑 → (-(𝑀 / 2) ≤ 𝐵 ∧ 𝐵 < (𝑀 / 2))) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 103 = wceq 1348 ∈ wcel 2141 class class class wbr 3989 (class class class)co 5853 ℝcr 7773 0cc0 7774 + caddc 7777 < clt 7954 ≤ cle 7955 − cmin 8090 -cneg 8091 / cdiv 8589 ℕcn 8878 2c2 8929 ℤcz 9212 ℚcq 9578 mod cmo 10278 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 609 ax-in2 610 ax-io 704 ax-5 1440 ax-7 1441 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-8 1497 ax-10 1498 ax-11 1499 ax-i12 1500 ax-bndl 1502 ax-4 1503 ax-17 1519 ax-i9 1523 ax-ial 1527 ax-i5r 1528 ax-13 2143 ax-14 2144 ax-ext 2152 ax-sep 4107 ax-pow 4160 ax-pr 4194 ax-un 4418 ax-setind 4521 ax-cnex 7865 ax-resscn 7866 ax-1cn 7867 ax-1re 7868 ax-icn 7869 ax-addcl 7870 ax-addrcl 7871 ax-mulcl 7872 ax-mulrcl 7873 ax-addcom 7874 ax-mulcom 7875 ax-addass 7876 ax-mulass 7877 ax-distr 7878 ax-i2m1 7879 ax-0lt1 7880 ax-1rid 7881 ax-0id 7882 ax-rnegex 7883 ax-precex 7884 ax-cnre 7885 ax-pre-ltirr 7886 ax-pre-ltwlin 7887 ax-pre-lttrn 7888 ax-pre-apti 7889 ax-pre-ltadd 7890 ax-pre-mulgt0 7891 ax-pre-mulext 7892 ax-arch 7893 |
This theorem depends on definitions: df-bi 116 df-3or 974 df-3an 975 df-tru 1351 df-fal 1354 df-nf 1454 df-sb 1756 df-eu 2022 df-mo 2023 df-clab 2157 df-cleq 2163 df-clel 2166 df-nfc 2301 df-ne 2341 df-nel 2436 df-ral 2453 df-rex 2454 df-reu 2455 df-rmo 2456 df-rab 2457 df-v 2732 df-sbc 2956 df-csb 3050 df-dif 3123 df-un 3125 df-in 3127 df-ss 3134 df-pw 3568 df-sn 3589 df-pr 3590 df-op 3592 df-uni 3797 df-int 3832 df-iun 3875 df-br 3990 df-opab 4051 df-mpt 4052 df-id 4278 df-po 4281 df-iso 4282 df-xp 4617 df-rel 4618 df-cnv 4619 df-co 4620 df-dm 4621 df-rn 4622 df-res 4623 df-ima 4624 df-iota 5160 df-fun 5200 df-fn 5201 df-f 5202 df-fv 5206 df-riota 5809 df-ov 5856 df-oprab 5857 df-mpo 5858 df-1st 6119 df-2nd 6120 df-pnf 7956 df-mnf 7957 df-xr 7958 df-ltxr 7959 df-le 7960 df-sub 8092 df-neg 8093 df-reap 8494 df-ap 8501 df-div 8590 df-inn 8879 df-2 8937 df-n0 9136 df-z 9213 df-q 9579 df-rp 9611 df-fl 10226 df-mod 10279 |
This theorem is referenced by: 4sqlem7 12336 4sqlem10 12339 |
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