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| 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 10438 | . . . . 5 ⊢ (𝐴 ∈ ℚ → (⌊‘𝐴) ∈ ℤ) | |
| 2 | 1 | adantr 276 | . . . 4 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → (⌊‘𝐴) ∈ ℤ) |
| 3 | 2 | zred 9515 | . . 3 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → (⌊‘𝐴) ∈ ℝ) |
| 4 | qre 9766 | . . . 4 ⊢ (𝐴 ∈ ℚ → 𝐴 ∈ ℝ) | |
| 5 | 4 | adantr 276 | . . 3 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → 𝐴 ∈ ℝ) |
| 6 | simpr 110 | . . . 4 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → 𝑁 ∈ ℤ) | |
| 7 | 6 | zred 9515 | . . 3 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → 𝑁 ∈ ℝ) |
| 8 | flqle 10443 | . . . 4 ⊢ (𝐴 ∈ ℚ → (⌊‘𝐴) ≤ 𝐴) | |
| 9 | 8 | adantr 276 | . . 3 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → (⌊‘𝐴) ≤ 𝐴) |
| 10 | 3, 5, 7, 9 | leadd1dd 8652 | . 2 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → ((⌊‘𝐴) + 𝑁) ≤ (𝐴 + 𝑁)) |
| 11 | 1red 8107 | . . . . 5 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → 1 ∈ ℝ) | |
| 12 | 3, 11 | readdcld 8122 | . . . 4 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → ((⌊‘𝐴) + 1) ∈ ℝ) |
| 13 | flqltp1 10444 | . . . . 5 ⊢ (𝐴 ∈ ℚ → 𝐴 < ((⌊‘𝐴) + 1)) | |
| 14 | 13 | adantr 276 | . . . 4 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → 𝐴 < ((⌊‘𝐴) + 1)) |
| 15 | 5, 12, 7, 14 | ltadd1dd 8649 | . . 3 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → (𝐴 + 𝑁) < (((⌊‘𝐴) + 1) + 𝑁)) |
| 16 | 2 | zcnd 9516 | . . . 4 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → (⌊‘𝐴) ∈ ℂ) |
| 17 | 1cnd 8108 | . . . 4 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → 1 ∈ ℂ) | |
| 18 | 6 | zcnd 9516 | . . . 4 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → 𝑁 ∈ ℂ) |
| 19 | 16, 17, 18 | add32d 8260 | . . 3 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → (((⌊‘𝐴) + 1) + 𝑁) = (((⌊‘𝐴) + 𝑁) + 1)) |
| 20 | 15, 19 | breqtrd 4077 | . 2 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → (𝐴 + 𝑁) < (((⌊‘𝐴) + 𝑁) + 1)) |
| 21 | zq 9767 | . . . 4 ⊢ (𝑁 ∈ ℤ → 𝑁 ∈ ℚ) | |
| 22 | qaddcl 9776 | . . . 4 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℚ) → (𝐴 + 𝑁) ∈ ℚ) | |
| 23 | 21, 22 | sylan2 286 | . . 3 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → (𝐴 + 𝑁) ∈ ℚ) |
| 24 | simpl 109 | . . . . 5 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → 𝐴 ∈ ℚ) | |
| 25 | 24 | flqcld 10442 | . . . 4 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → (⌊‘𝐴) ∈ ℤ) |
| 26 | 25, 6 | zaddcld 9519 | . . 3 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → ((⌊‘𝐴) + 𝑁) ∈ ℤ) |
| 27 | flqbi 10455 | . . 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 411 | . 2 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → ((⌊‘(𝐴 + 𝑁)) = ((⌊‘𝐴) + 𝑁) ↔ (((⌊‘𝐴) + 𝑁) ≤ (𝐴 + 𝑁) ∧ (𝐴 + 𝑁) < (((⌊‘𝐴) + 𝑁) + 1)))) |
| 29 | 10, 20, 28 | mpbir2and 947 | 1 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → (⌊‘(𝐴 + 𝑁)) = ((⌊‘𝐴) + 𝑁)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ↔ wb 105 = wceq 1373 ∈ wcel 2177 class class class wbr 4051 ‘cfv 5280 (class class class)co 5957 ℝcr 7944 1c1 7946 + caddc 7948 < clt 8127 ≤ cle 8128 ℤcz 9392 ℚcq 9760 ⌊cfl 10433 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 615 ax-in2 616 ax-io 711 ax-5 1471 ax-7 1472 ax-gen 1473 ax-ie1 1517 ax-ie2 1518 ax-8 1528 ax-10 1529 ax-11 1530 ax-i12 1531 ax-bndl 1533 ax-4 1534 ax-17 1550 ax-i9 1554 ax-ial 1558 ax-i5r 1559 ax-13 2179 ax-14 2180 ax-ext 2188 ax-sep 4170 ax-pow 4226 ax-pr 4261 ax-un 4488 ax-setind 4593 ax-cnex 8036 ax-resscn 8037 ax-1cn 8038 ax-1re 8039 ax-icn 8040 ax-addcl 8041 ax-addrcl 8042 ax-mulcl 8043 ax-mulrcl 8044 ax-addcom 8045 ax-mulcom 8046 ax-addass 8047 ax-mulass 8048 ax-distr 8049 ax-i2m1 8050 ax-0lt1 8051 ax-1rid 8052 ax-0id 8053 ax-rnegex 8054 ax-precex 8055 ax-cnre 8056 ax-pre-ltirr 8057 ax-pre-ltwlin 8058 ax-pre-lttrn 8059 ax-pre-apti 8060 ax-pre-ltadd 8061 ax-pre-mulgt0 8062 ax-pre-mulext 8063 ax-arch 8064 |
| This theorem depends on definitions: df-bi 117 df-3or 982 df-3an 983 df-tru 1376 df-fal 1379 df-nf 1485 df-sb 1787 df-eu 2058 df-mo 2059 df-clab 2193 df-cleq 2199 df-clel 2202 df-nfc 2338 df-ne 2378 df-nel 2473 df-ral 2490 df-rex 2491 df-reu 2492 df-rmo 2493 df-rab 2494 df-v 2775 df-sbc 3003 df-csb 3098 df-dif 3172 df-un 3174 df-in 3176 df-ss 3183 df-pw 3623 df-sn 3644 df-pr 3645 df-op 3647 df-uni 3857 df-int 3892 df-iun 3935 df-br 4052 df-opab 4114 df-mpt 4115 df-id 4348 df-po 4351 df-iso 4352 df-xp 4689 df-rel 4690 df-cnv 4691 df-co 4692 df-dm 4693 df-rn 4694 df-res 4695 df-ima 4696 df-iota 5241 df-fun 5282 df-fn 5283 df-f 5284 df-fv 5288 df-riota 5912 df-ov 5960 df-oprab 5961 df-mpo 5962 df-1st 6239 df-2nd 6240 df-pnf 8129 df-mnf 8130 df-xr 8131 df-ltxr 8132 df-le 8133 df-sub 8265 df-neg 8266 df-reap 8668 df-ap 8675 df-div 8766 df-inn 9057 df-n0 9316 df-z 9393 df-q 9761 df-rp 9796 df-fl 10435 |
| This theorem is referenced by: flqzadd 10463 modqcyc 10526 bitsmod 12342 fldivp1 12746 |
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