Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > ILE Home > Th. List > flqaddz | GIF version |
Description: An integer can be moved in and out of the floor of a sum. (Contributed by Jim Kingdon, 10-Oct-2021.) |
Ref | Expression |
---|---|
flqaddz | ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → (⌊‘(𝐴 + 𝑁)) = ((⌊‘𝐴) + 𝑁)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | flqcl 10039 | . . . . 5 ⊢ (𝐴 ∈ ℚ → (⌊‘𝐴) ∈ ℤ) | |
2 | 1 | adantr 274 | . . . 4 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → (⌊‘𝐴) ∈ ℤ) |
3 | 2 | zred 9166 | . . 3 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → (⌊‘𝐴) ∈ ℝ) |
4 | qre 9410 | . . . 4 ⊢ (𝐴 ∈ ℚ → 𝐴 ∈ ℝ) | |
5 | 4 | adantr 274 | . . 3 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → 𝐴 ∈ ℝ) |
6 | simpr 109 | . . . 4 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → 𝑁 ∈ ℤ) | |
7 | 6 | zred 9166 | . . 3 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → 𝑁 ∈ ℝ) |
8 | flqle 10044 | . . . 4 ⊢ (𝐴 ∈ ℚ → (⌊‘𝐴) ≤ 𝐴) | |
9 | 8 | adantr 274 | . . 3 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → (⌊‘𝐴) ≤ 𝐴) |
10 | 3, 5, 7, 9 | leadd1dd 8314 | . 2 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → ((⌊‘𝐴) + 𝑁) ≤ (𝐴 + 𝑁)) |
11 | 1red 7774 | . . . . 5 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → 1 ∈ ℝ) | |
12 | 3, 11 | readdcld 7788 | . . . 4 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → ((⌊‘𝐴) + 1) ∈ ℝ) |
13 | flqltp1 10045 | . . . . 5 ⊢ (𝐴 ∈ ℚ → 𝐴 < ((⌊‘𝐴) + 1)) | |
14 | 13 | adantr 274 | . . . 4 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → 𝐴 < ((⌊‘𝐴) + 1)) |
15 | 5, 12, 7, 14 | ltadd1dd 8311 | . . 3 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → (𝐴 + 𝑁) < (((⌊‘𝐴) + 1) + 𝑁)) |
16 | 2 | zcnd 9167 | . . . 4 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → (⌊‘𝐴) ∈ ℂ) |
17 | 1cnd 7775 | . . . 4 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → 1 ∈ ℂ) | |
18 | 6 | zcnd 9167 | . . . 4 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → 𝑁 ∈ ℂ) |
19 | 16, 17, 18 | add32d 7923 | . . 3 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → (((⌊‘𝐴) + 1) + 𝑁) = (((⌊‘𝐴) + 𝑁) + 1)) |
20 | 15, 19 | breqtrd 3949 | . 2 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → (𝐴 + 𝑁) < (((⌊‘𝐴) + 𝑁) + 1)) |
21 | zq 9411 | . . . 4 ⊢ (𝑁 ∈ ℤ → 𝑁 ∈ ℚ) | |
22 | qaddcl 9420 | . . . 4 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℚ) → (𝐴 + 𝑁) ∈ ℚ) | |
23 | 21, 22 | sylan2 284 | . . 3 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → (𝐴 + 𝑁) ∈ ℚ) |
24 | simpl 108 | . . . . 5 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → 𝐴 ∈ ℚ) | |
25 | 24 | flqcld 10043 | . . . 4 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → (⌊‘𝐴) ∈ ℤ) |
26 | 25, 6 | zaddcld 9170 | . . 3 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → ((⌊‘𝐴) + 𝑁) ∈ ℤ) |
27 | flqbi 10056 | . . 3 ⊢ (((𝐴 + 𝑁) ∈ ℚ ∧ ((⌊‘𝐴) + 𝑁) ∈ ℤ) → ((⌊‘(𝐴 + 𝑁)) = ((⌊‘𝐴) + 𝑁) ↔ (((⌊‘𝐴) + 𝑁) ≤ (𝐴 + 𝑁) ∧ (𝐴 + 𝑁) < (((⌊‘𝐴) + 𝑁) + 1)))) | |
28 | 23, 26, 27 | syl2anc 408 | . 2 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → ((⌊‘(𝐴 + 𝑁)) = ((⌊‘𝐴) + 𝑁) ↔ (((⌊‘𝐴) + 𝑁) ≤ (𝐴 + 𝑁) ∧ (𝐴 + 𝑁) < (((⌊‘𝐴) + 𝑁) + 1)))) |
29 | 10, 20, 28 | mpbir2and 928 | 1 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → (⌊‘(𝐴 + 𝑁)) = ((⌊‘𝐴) + 𝑁)) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 103 ↔ wb 104 = wceq 1331 ∈ wcel 1480 class class class wbr 3924 ‘cfv 5118 (class class class)co 5767 ℝcr 7612 1c1 7614 + caddc 7616 < clt 7793 ≤ cle 7794 ℤcz 9047 ℚcq 9404 ⌊cfl 10034 |
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 603 ax-in2 604 ax-io 698 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-10 1483 ax-11 1484 ax-i12 1485 ax-bndl 1486 ax-4 1487 ax-13 1491 ax-14 1492 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2119 ax-sep 4041 ax-pow 4093 ax-pr 4126 ax-un 4350 ax-setind 4447 ax-cnex 7704 ax-resscn 7705 ax-1cn 7706 ax-1re 7707 ax-icn 7708 ax-addcl 7709 ax-addrcl 7710 ax-mulcl 7711 ax-mulrcl 7712 ax-addcom 7713 ax-mulcom 7714 ax-addass 7715 ax-mulass 7716 ax-distr 7717 ax-i2m1 7718 ax-0lt1 7719 ax-1rid 7720 ax-0id 7721 ax-rnegex 7722 ax-precex 7723 ax-cnre 7724 ax-pre-ltirr 7725 ax-pre-ltwlin 7726 ax-pre-lttrn 7727 ax-pre-apti 7728 ax-pre-ltadd 7729 ax-pre-mulgt0 7730 ax-pre-mulext 7731 ax-arch 7732 |
This theorem depends on definitions: df-bi 116 df-3or 963 df-3an 964 df-tru 1334 df-fal 1337 df-nf 1437 df-sb 1736 df-eu 2000 df-mo 2001 df-clab 2124 df-cleq 2130 df-clel 2133 df-nfc 2268 df-ne 2307 df-nel 2402 df-ral 2419 df-rex 2420 df-reu 2421 df-rmo 2422 df-rab 2423 df-v 2683 df-sbc 2905 df-csb 2999 df-dif 3068 df-un 3070 df-in 3072 df-ss 3079 df-pw 3507 df-sn 3528 df-pr 3529 df-op 3531 df-uni 3732 df-int 3767 df-iun 3810 df-br 3925 df-opab 3985 df-mpt 3986 df-id 4210 df-po 4213 df-iso 4214 df-xp 4540 df-rel 4541 df-cnv 4542 df-co 4543 df-dm 4544 df-rn 4545 df-res 4546 df-ima 4547 df-iota 5083 df-fun 5120 df-fn 5121 df-f 5122 df-fv 5126 df-riota 5723 df-ov 5770 df-oprab 5771 df-mpo 5772 df-1st 6031 df-2nd 6032 df-pnf 7795 df-mnf 7796 df-xr 7797 df-ltxr 7798 df-le 7799 df-sub 7928 df-neg 7929 df-reap 8330 df-ap 8337 df-div 8426 df-inn 8714 df-n0 8971 df-z 9048 df-q 9405 df-rp 9435 df-fl 10036 |
This theorem is referenced by: flqzadd 10064 modqcyc 10125 |
Copyright terms: Public domain | W3C validator |