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| Mirrors > Home > MPE Home > Th. List > Mathboxes > itcovalt2lem2lem1 | Structured version Visualization version GIF version | ||
| Description: Lemma 1 for itcovalt2lem2 48656. (Contributed by AV, 6-May-2024.) |
| Ref | Expression |
|---|---|
| itcovalt2lem2lem1 | ⊢ (((𝑌 ∈ ℕ ∧ 𝐶 ∈ ℕ0) ∧ 𝑁 ∈ ℕ0) → (((𝑁 + 𝐶) · 𝑌) − 𝐶) ∈ ℕ0) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nn0re 12510 | . . . . 5 ⊢ (𝐶 ∈ ℕ0 → 𝐶 ∈ ℝ) | |
| 2 | 1 | adantl 481 | . . . 4 ⊢ ((𝑌 ∈ ℕ ∧ 𝐶 ∈ ℕ0) → 𝐶 ∈ ℝ) |
| 3 | 2 | adantr 480 | . . 3 ⊢ (((𝑌 ∈ ℕ ∧ 𝐶 ∈ ℕ0) ∧ 𝑁 ∈ ℕ0) → 𝐶 ∈ ℝ) |
| 4 | simpr 484 | . . . . 5 ⊢ (((𝑌 ∈ ℕ ∧ 𝐶 ∈ ℕ0) ∧ 𝑁 ∈ ℕ0) → 𝑁 ∈ ℕ0) | |
| 5 | simpr 484 | . . . . . 6 ⊢ ((𝑌 ∈ ℕ ∧ 𝐶 ∈ ℕ0) → 𝐶 ∈ ℕ0) | |
| 6 | 5 | adantr 480 | . . . . 5 ⊢ (((𝑌 ∈ ℕ ∧ 𝐶 ∈ ℕ0) ∧ 𝑁 ∈ ℕ0) → 𝐶 ∈ ℕ0) |
| 7 | 4, 6 | nn0addcld 12566 | . . . 4 ⊢ (((𝑌 ∈ ℕ ∧ 𝐶 ∈ ℕ0) ∧ 𝑁 ∈ ℕ0) → (𝑁 + 𝐶) ∈ ℕ0) |
| 8 | 7 | nn0red 12563 | . . 3 ⊢ (((𝑌 ∈ ℕ ∧ 𝐶 ∈ ℕ0) ∧ 𝑁 ∈ ℕ0) → (𝑁 + 𝐶) ∈ ℝ) |
| 9 | nnnn0 12508 | . . . . . 6 ⊢ (𝑌 ∈ ℕ → 𝑌 ∈ ℕ0) | |
| 10 | 9 | ad2antrr 726 | . . . . 5 ⊢ (((𝑌 ∈ ℕ ∧ 𝐶 ∈ ℕ0) ∧ 𝑁 ∈ ℕ0) → 𝑌 ∈ ℕ0) |
| 11 | 7, 10 | nn0mulcld 12567 | . . . 4 ⊢ (((𝑌 ∈ ℕ ∧ 𝐶 ∈ ℕ0) ∧ 𝑁 ∈ ℕ0) → ((𝑁 + 𝐶) · 𝑌) ∈ ℕ0) |
| 12 | 11 | nn0red 12563 | . . 3 ⊢ (((𝑌 ∈ ℕ ∧ 𝐶 ∈ ℕ0) ∧ 𝑁 ∈ ℕ0) → ((𝑁 + 𝐶) · 𝑌) ∈ ℝ) |
| 13 | nn0ge0 12526 | . . . . 5 ⊢ (𝑁 ∈ ℕ0 → 0 ≤ 𝑁) | |
| 14 | 13 | adantl 481 | . . . 4 ⊢ (((𝑌 ∈ ℕ ∧ 𝐶 ∈ ℕ0) ∧ 𝑁 ∈ ℕ0) → 0 ≤ 𝑁) |
| 15 | 6 | nn0red 12563 | . . . . 5 ⊢ (((𝑌 ∈ ℕ ∧ 𝐶 ∈ ℕ0) ∧ 𝑁 ∈ ℕ0) → 𝐶 ∈ ℝ) |
| 16 | 4 | nn0red 12563 | . . . . 5 ⊢ (((𝑌 ∈ ℕ ∧ 𝐶 ∈ ℕ0) ∧ 𝑁 ∈ ℕ0) → 𝑁 ∈ ℝ) |
| 17 | 15, 16 | addge02d 11826 | . . . 4 ⊢ (((𝑌 ∈ ℕ ∧ 𝐶 ∈ ℕ0) ∧ 𝑁 ∈ ℕ0) → (0 ≤ 𝑁 ↔ 𝐶 ≤ (𝑁 + 𝐶))) |
| 18 | 14, 17 | mpbid 232 | . . 3 ⊢ (((𝑌 ∈ ℕ ∧ 𝐶 ∈ ℕ0) ∧ 𝑁 ∈ ℕ0) → 𝐶 ≤ (𝑁 + 𝐶)) |
| 19 | simpll 766 | . . . . 5 ⊢ (((𝑌 ∈ ℕ ∧ 𝐶 ∈ ℕ0) ∧ 𝑁 ∈ ℕ0) → 𝑌 ∈ ℕ) | |
| 20 | 19 | nnred 12255 | . . . 4 ⊢ (((𝑌 ∈ ℕ ∧ 𝐶 ∈ ℕ0) ∧ 𝑁 ∈ ℕ0) → 𝑌 ∈ ℝ) |
| 21 | 7 | nn0ge0d 12565 | . . . 4 ⊢ (((𝑌 ∈ ℕ ∧ 𝐶 ∈ ℕ0) ∧ 𝑁 ∈ ℕ0) → 0 ≤ (𝑁 + 𝐶)) |
| 22 | nnge1 12268 | . . . . 5 ⊢ (𝑌 ∈ ℕ → 1 ≤ 𝑌) | |
| 23 | 22 | ad2antrr 726 | . . . 4 ⊢ (((𝑌 ∈ ℕ ∧ 𝐶 ∈ ℕ0) ∧ 𝑁 ∈ ℕ0) → 1 ≤ 𝑌) |
| 24 | 8, 20, 21, 23 | lemulge11d 12179 | . . 3 ⊢ (((𝑌 ∈ ℕ ∧ 𝐶 ∈ ℕ0) ∧ 𝑁 ∈ ℕ0) → (𝑁 + 𝐶) ≤ ((𝑁 + 𝐶) · 𝑌)) |
| 25 | 3, 8, 12, 18, 24 | letrd 11392 | . 2 ⊢ (((𝑌 ∈ ℕ ∧ 𝐶 ∈ ℕ0) ∧ 𝑁 ∈ ℕ0) → 𝐶 ≤ ((𝑁 + 𝐶) · 𝑌)) |
| 26 | nn0sub 12551 | . . 3 ⊢ ((𝐶 ∈ ℕ0 ∧ ((𝑁 + 𝐶) · 𝑌) ∈ ℕ0) → (𝐶 ≤ ((𝑁 + 𝐶) · 𝑌) ↔ (((𝑁 + 𝐶) · 𝑌) − 𝐶) ∈ ℕ0)) | |
| 27 | 6, 11, 26 | syl2anc 584 | . 2 ⊢ (((𝑌 ∈ ℕ ∧ 𝐶 ∈ ℕ0) ∧ 𝑁 ∈ ℕ0) → (𝐶 ≤ ((𝑁 + 𝐶) · 𝑌) ↔ (((𝑁 + 𝐶) · 𝑌) − 𝐶) ∈ ℕ0)) |
| 28 | 25, 27 | mpbid 232 | 1 ⊢ (((𝑌 ∈ ℕ ∧ 𝐶 ∈ ℕ0) ∧ 𝑁 ∈ ℕ0) → (((𝑁 + 𝐶) · 𝑌) − 𝐶) ∈ ℕ0) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∈ wcel 2108 class class class wbr 5119 (class class class)co 7405 ℝcr 11128 0cc0 11129 1c1 11130 + caddc 11132 · cmul 11134 ≤ cle 11270 − cmin 11466 ℕcn 12240 ℕ0cn0 12501 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2157 ax-12 2177 ax-ext 2707 ax-sep 5266 ax-nul 5276 ax-pow 5335 ax-pr 5402 ax-un 7729 ax-resscn 11186 ax-1cn 11187 ax-icn 11188 ax-addcl 11189 ax-addrcl 11190 ax-mulcl 11191 ax-mulrcl 11192 ax-mulcom 11193 ax-addass 11194 ax-mulass 11195 ax-distr 11196 ax-i2m1 11197 ax-1ne0 11198 ax-1rid 11199 ax-rnegex 11200 ax-rrecex 11201 ax-cnre 11202 ax-pre-lttri 11203 ax-pre-lttrn 11204 ax-pre-ltadd 11205 ax-pre-mulgt0 11206 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2065 df-mo 2539 df-eu 2568 df-clab 2714 df-cleq 2727 df-clel 2809 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3061 df-reu 3360 df-rab 3416 df-v 3461 df-sbc 3766 df-csb 3875 df-dif 3929 df-un 3931 df-in 3933 df-ss 3943 df-pss 3946 df-nul 4309 df-if 4501 df-pw 4577 df-sn 4602 df-pr 4604 df-op 4608 df-uni 4884 df-iun 4969 df-br 5120 df-opab 5182 df-mpt 5202 df-tr 5230 df-id 5548 df-eprel 5553 df-po 5561 df-so 5562 df-fr 5606 df-we 5608 df-xp 5660 df-rel 5661 df-cnv 5662 df-co 5663 df-dm 5664 df-rn 5665 df-res 5666 df-ima 5667 df-pred 6290 df-ord 6355 df-on 6356 df-lim 6357 df-suc 6358 df-iota 6484 df-fun 6533 df-fn 6534 df-f 6535 df-f1 6536 df-fo 6537 df-f1o 6538 df-fv 6539 df-riota 7362 df-ov 7408 df-oprab 7409 df-mpo 7410 df-om 7862 df-2nd 7989 df-frecs 8280 df-wrecs 8311 df-recs 8385 df-rdg 8424 df-er 8719 df-en 8960 df-dom 8961 df-sdom 8962 df-pnf 11271 df-mnf 11272 df-xr 11273 df-ltxr 11274 df-le 11275 df-sub 11468 df-neg 11469 df-nn 12241 df-n0 12502 |
| This theorem is referenced by: itcovalt2lem2 48656 |
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