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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 10532 | . . . . 5 ⊢ (𝐴 ∈ ℚ → (⌊‘𝐴) ∈ ℤ) | |
| 2 | 1 | adantr 276 | . . . 4 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → (⌊‘𝐴) ∈ ℤ) |
| 3 | 2 | zred 9601 | . . 3 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → (⌊‘𝐴) ∈ ℝ) |
| 4 | qre 9858 | . . . 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 9601 | . . 3 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → 𝑁 ∈ ℝ) |
| 8 | flqle 10537 | . . . 4 ⊢ (𝐴 ∈ ℚ → (⌊‘𝐴) ≤ 𝐴) | |
| 9 | 8 | adantr 276 | . . 3 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → (⌊‘𝐴) ≤ 𝐴) |
| 10 | 3, 5, 7, 9 | leadd1dd 8738 | . 2 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → ((⌊‘𝐴) + 𝑁) ≤ (𝐴 + 𝑁)) |
| 11 | 1red 8193 | . . . . 5 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → 1 ∈ ℝ) | |
| 12 | 3, 11 | readdcld 8208 | . . . 4 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → ((⌊‘𝐴) + 1) ∈ ℝ) |
| 13 | flqltp1 10538 | . . . . 5 ⊢ (𝐴 ∈ ℚ → 𝐴 < ((⌊‘𝐴) + 1)) | |
| 14 | 13 | adantr 276 | . . . 4 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → 𝐴 < ((⌊‘𝐴) + 1)) |
| 15 | 5, 12, 7, 14 | ltadd1dd 8735 | . . 3 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → (𝐴 + 𝑁) < (((⌊‘𝐴) + 1) + 𝑁)) |
| 16 | 2 | zcnd 9602 | . . . 4 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → (⌊‘𝐴) ∈ ℂ) |
| 17 | 1cnd 8194 | . . . 4 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → 1 ∈ ℂ) | |
| 18 | 6 | zcnd 9602 | . . . 4 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → 𝑁 ∈ ℂ) |
| 19 | 16, 17, 18 | add32d 8346 | . . 3 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → (((⌊‘𝐴) + 1) + 𝑁) = (((⌊‘𝐴) + 𝑁) + 1)) |
| 20 | 15, 19 | breqtrd 4114 | . 2 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → (𝐴 + 𝑁) < (((⌊‘𝐴) + 𝑁) + 1)) |
| 21 | zq 9859 | . . . 4 ⊢ (𝑁 ∈ ℤ → 𝑁 ∈ ℚ) | |
| 22 | qaddcl 9868 | . . . 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 10536 | . . . 4 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → (⌊‘𝐴) ∈ ℤ) |
| 26 | 25, 6 | zaddcld 9605 | . . 3 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → ((⌊‘𝐴) + 𝑁) ∈ ℤ) |
| 27 | flqbi 10549 | . . 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 952 | 1 ⊢ ((𝐴 ∈ ℚ ∧ 𝑁 ∈ ℤ) → (⌊‘(𝐴 + 𝑁)) = ((⌊‘𝐴) + 𝑁)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ↔ wb 105 = wceq 1397 ∈ wcel 2202 class class class wbr 4088 ‘cfv 5326 (class class class)co 6017 ℝcr 8030 1c1 8032 + caddc 8034 < clt 8213 ≤ cle 8214 ℤcz 9478 ℚcq 9852 ⌊cfl 10527 |
| 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 619 ax-in2 620 ax-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2204 ax-14 2205 ax-ext 2213 ax-sep 4207 ax-pow 4264 ax-pr 4299 ax-un 4530 ax-setind 4635 ax-cnex 8122 ax-resscn 8123 ax-1cn 8124 ax-1re 8125 ax-icn 8126 ax-addcl 8127 ax-addrcl 8128 ax-mulcl 8129 ax-mulrcl 8130 ax-addcom 8131 ax-mulcom 8132 ax-addass 8133 ax-mulass 8134 ax-distr 8135 ax-i2m1 8136 ax-0lt1 8137 ax-1rid 8138 ax-0id 8139 ax-rnegex 8140 ax-precex 8141 ax-cnre 8142 ax-pre-ltirr 8143 ax-pre-ltwlin 8144 ax-pre-lttrn 8145 ax-pre-apti 8146 ax-pre-ltadd 8147 ax-pre-mulgt0 8148 ax-pre-mulext 8149 ax-arch 8150 |
| This theorem depends on definitions: df-bi 117 df-3or 1005 df-3an 1006 df-tru 1400 df-fal 1403 df-nf 1509 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ne 2403 df-nel 2498 df-ral 2515 df-rex 2516 df-reu 2517 df-rmo 2518 df-rab 2519 df-v 2804 df-sbc 3032 df-csb 3128 df-dif 3202 df-un 3204 df-in 3206 df-ss 3213 df-pw 3654 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-int 3929 df-iun 3972 df-br 4089 df-opab 4151 df-mpt 4152 df-id 4390 df-po 4393 df-iso 4394 df-xp 4731 df-rel 4732 df-cnv 4733 df-co 4734 df-dm 4735 df-rn 4736 df-res 4737 df-ima 4738 df-iota 5286 df-fun 5328 df-fn 5329 df-f 5330 df-fv 5334 df-riota 5970 df-ov 6020 df-oprab 6021 df-mpo 6022 df-1st 6302 df-2nd 6303 df-pnf 8215 df-mnf 8216 df-xr 8217 df-ltxr 8218 df-le 8219 df-sub 8351 df-neg 8352 df-reap 8754 df-ap 8761 df-div 8852 df-inn 9143 df-n0 9402 df-z 9479 df-q 9853 df-rp 9888 df-fl 10529 |
| This theorem is referenced by: flqzadd 10557 modqcyc 10620 bitsmod 12516 fldivp1 12920 |
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