| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > crctcshwlkn0lem1 | Structured version Visualization version GIF version | ||
| Description: Lemma for crctcshwlkn0 29766. (Contributed by AV, 13-Mar-2021.) |
| Ref | Expression |
|---|---|
| crctcshwlkn0lem1 | ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℕ) → ((𝐴 − 𝐵) + 1) ≤ 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | recn 11099 | . . . 4 ⊢ (𝐴 ∈ ℝ → 𝐴 ∈ ℂ) | |
| 2 | 1 | adantr 480 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℕ) → 𝐴 ∈ ℂ) |
| 3 | nncn 12136 | . . . 4 ⊢ (𝐵 ∈ ℕ → 𝐵 ∈ ℂ) | |
| 4 | 3 | adantl 481 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℕ) → 𝐵 ∈ ℂ) |
| 5 | 1cnd 11110 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℕ) → 1 ∈ ℂ) | |
| 6 | subsub 11394 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 1 ∈ ℂ) → (𝐴 − (𝐵 − 1)) = ((𝐴 − 𝐵) + 1)) | |
| 7 | 6 | eqcomd 2735 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 1 ∈ ℂ) → ((𝐴 − 𝐵) + 1) = (𝐴 − (𝐵 − 1))) |
| 8 | 2, 4, 5, 7 | syl3anc 1373 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℕ) → ((𝐴 − 𝐵) + 1) = (𝐴 − (𝐵 − 1))) |
| 9 | nnm1ge0 12544 | . . . 4 ⊢ (𝐵 ∈ ℕ → 0 ≤ (𝐵 − 1)) | |
| 10 | 9 | adantl 481 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℕ) → 0 ≤ (𝐵 − 1)) |
| 11 | nnre 12135 | . . . . 5 ⊢ (𝐵 ∈ ℕ → 𝐵 ∈ ℝ) | |
| 12 | peano2rem 11431 | . . . . 5 ⊢ (𝐵 ∈ ℝ → (𝐵 − 1) ∈ ℝ) | |
| 13 | 11, 12 | syl 17 | . . . 4 ⊢ (𝐵 ∈ ℕ → (𝐵 − 1) ∈ ℝ) |
| 14 | subge02 11636 | . . . . 5 ⊢ ((𝐴 ∈ ℝ ∧ (𝐵 − 1) ∈ ℝ) → (0 ≤ (𝐵 − 1) ↔ (𝐴 − (𝐵 − 1)) ≤ 𝐴)) | |
| 15 | 14 | bicomd 223 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ (𝐵 − 1) ∈ ℝ) → ((𝐴 − (𝐵 − 1)) ≤ 𝐴 ↔ 0 ≤ (𝐵 − 1))) |
| 16 | 13, 15 | sylan2 593 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℕ) → ((𝐴 − (𝐵 − 1)) ≤ 𝐴 ↔ 0 ≤ (𝐵 − 1))) |
| 17 | 10, 16 | mpbird 257 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℕ) → (𝐴 − (𝐵 − 1)) ≤ 𝐴) |
| 18 | 8, 17 | eqbrtrd 5114 | 1 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℕ) → ((𝐴 − 𝐵) + 1) ≤ 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∧ w3a 1086 = wceq 1540 ∈ wcel 2109 class class class wbr 5092 (class class class)co 7349 ℂcc 11007 ℝcr 11008 0cc0 11009 1c1 11010 + caddc 11012 ≤ cle 11150 − cmin 11347 ℕcn 12128 |
| 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 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-sep 5235 ax-nul 5245 ax-pow 5304 ax-pr 5371 ax-un 7671 ax-resscn 11066 ax-1cn 11067 ax-icn 11068 ax-addcl 11069 ax-addrcl 11070 ax-mulcl 11071 ax-mulrcl 11072 ax-mulcom 11073 ax-addass 11074 ax-mulass 11075 ax-distr 11076 ax-i2m1 11077 ax-1ne0 11078 ax-1rid 11079 ax-rnegex 11080 ax-rrecex 11081 ax-cnre 11082 ax-pre-lttri 11083 ax-pre-lttrn 11084 ax-pre-ltadd 11085 ax-pre-mulgt0 11086 |
| 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 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-nel 3030 df-ral 3045 df-rex 3054 df-reu 3344 df-rab 3395 df-v 3438 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-pss 3923 df-nul 4285 df-if 4477 df-pw 4553 df-sn 4578 df-pr 4580 df-op 4584 df-uni 4859 df-iun 4943 df-br 5093 df-opab 5155 df-mpt 5174 df-tr 5200 df-id 5514 df-eprel 5519 df-po 5527 df-so 5528 df-fr 5572 df-we 5574 df-xp 5625 df-rel 5626 df-cnv 5627 df-co 5628 df-dm 5629 df-rn 5630 df-res 5631 df-ima 5632 df-pred 6249 df-ord 6310 df-on 6311 df-lim 6312 df-suc 6313 df-iota 6438 df-fun 6484 df-fn 6485 df-f 6486 df-f1 6487 df-fo 6488 df-f1o 6489 df-fv 6490 df-riota 7306 df-ov 7352 df-oprab 7353 df-mpo 7354 df-om 7800 df-2nd 7925 df-frecs 8214 df-wrecs 8245 df-recs 8294 df-rdg 8332 df-er 8625 df-en 8873 df-dom 8874 df-sdom 8875 df-pnf 11151 df-mnf 11152 df-xr 11153 df-ltxr 11154 df-le 11155 df-sub 11349 df-neg 11350 df-nn 12129 df-n0 12385 df-z 12472 |
| This theorem is referenced by: crctcshwlkn0lem6 29760 crctcshwlkn0lem7 29761 |
| Copyright terms: Public domain | W3C validator |