| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > crctcshwlkn0lem1 | Structured version Visualization version GIF version | ||
| Description: Lemma for crctcshwlkn0 30422. (Contributed by AV, 13-Mar-2021.) |
| Ref | Expression |
|---|---|
| crctcshwlkn0lem1 | ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℕ) → ((𝐴 − 𝐵) + 1) ≤ 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | recn 11300 | . . . 4 ⊢ (𝐴 ∈ ℝ → 𝐴 ∈ ℂ) | |
| 2 | 1 | adantr 486 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℕ) → 𝐴 ∈ ℂ) |
| 3 | nncn 12353 | . . . 4 ⊢ (𝐵 ∈ ℕ → 𝐵 ∈ ℂ) | |
| 4 | 3 | adantl 487 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℕ) → 𝐵 ∈ ℂ) |
| 5 | 1cnd 11312 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℕ) → 1 ∈ ℂ) | |
| 6 | subsub 11598 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 1 ∈ ℂ) → (𝐴 − (𝐵 − 1)) = ((𝐴 − 𝐵) + 1)) | |
| 7 | 6 | eqcomd 2769 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 1 ∈ ℂ) → ((𝐴 − 𝐵) + 1) = (𝐴 − (𝐵 − 1))) |
| 8 | 2, 4, 5, 7 | syl3anc 1398 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℕ) → ((𝐴 − 𝐵) + 1) = (𝐴 − (𝐵 − 1))) |
| 9 | nnm1ge0 12777 | . . . 4 ⊢ (𝐵 ∈ ℕ → 0 ≤ (𝐵 − 1)) | |
| 10 | 9 | adantl 487 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℕ) → 0 ≤ (𝐵 − 1)) |
| 11 | nnre 12352 | . . . . 5 ⊢ (𝐵 ∈ ℕ → 𝐵 ∈ ℝ) | |
| 12 | peano2rem 11635 | . . . . 5 ⊢ (𝐵 ∈ ℝ → (𝐵 − 1) ∈ ℝ) | |
| 13 | 11, 12 | syl 18 | . . . 4 ⊢ (𝐵 ∈ ℕ → (𝐵 − 1) ∈ ℝ) |
| 14 | subge02 11842 | . . . . 5 ⊢ ((𝐴 ∈ ℝ ∧ (𝐵 − 1) ∈ ℝ) → (0 ≤ (𝐵 − 1) ↔ (𝐴 − (𝐵 − 1)) ≤ 𝐴)) | |
| 15 | 14 | bicomd 226 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ (𝐵 − 1) ∈ ℝ) → ((𝐴 − (𝐵 − 1)) ≤ 𝐴 ↔ 0 ≤ (𝐵 − 1))) |
| 16 | 13, 15 | sylan2 605 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℕ) → ((𝐴 − (𝐵 − 1)) ≤ 𝐴 ↔ 0 ≤ (𝐵 − 1))) |
| 17 | 10, 16 | mpbird 260 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℕ) → (𝐴 − (𝐵 − 1)) ≤ 𝐴) |
| 18 | 8, 17 | eqbrtrd 5129 | 1 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℕ) → ((𝐴 − 𝐵) + 1) ≤ 𝐴) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 ∧ w3a 1103 = wceq 1569 ∈ wcel 2146 class class class wbr 5105 (class class class)co 7427 ℂcc 11208 ℝcr 11209 0cc0 11210 1c1 11211 + caddc 11213 ≤ cle 11354 − cmin 11551 ℕcn 12345 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1944 ax-6 2001 ax-7 2042 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2196 ax-12 2215 ax-ext 2735 ax-sep 5251 ax-nul 5262 ax-pow 5330 ax-pr 5394 ax-un 7758 ax-resscn 11267 ax-1cn 11268 ax-icn 11269 ax-addcl 11270 ax-addrcl 11271 ax-mulcl 11272 ax-mulrcl 11273 ax-mulcom 11274 ax-addass 11275 ax-mulass 11276 ax-distr 11277 ax-i2m1 11278 ax-1ne0 11279 ax-1rid 11280 ax-rnegex 11281 ax-rrecex 11282 ax-cnre 11283 ax-pre-lttri 11284 ax-pre-lttrn 11285 ax-pre-ltadd 11286 ax-pre-mulgt0 11287 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2101 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-nel 3065 df-ral 3080 df-rex 3090 df-reu 3369 df-rab 3416 df-v 3455 df-sbc 3742 df-csb 3851 df-ss 3900 df-pss 4016 df-dif 4049 df-in 4093 df-un 4153 df-nul 4281 df-if 4485 df-pw 4561 df-sn 4588 df-pr 4590 df-op 4838 df-uni 4870 df-iun 4955 df-br 5106 df-opab 5170 df-mpt 5189 df-tr 5215 df-id 5549 df-eprel 5554 df-po 5562 df-so 5563 df-fr 5607 df-we 5609 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 6310 df-ord 6371 df-on 6372 df-lim 6373 df-suc 6374 df-iota 6500 df-fun 6548 df-fn 6549 df-f 6550 df-f1 6551 df-fo 6552 df-f1o 6553 df-fv 6554 df-riota 7384 df-ov 7430 df-oprab 7431 df-mpo 7432 df-om 7885 df-2nd 8009 df-frecs 8310 df-wrecs 8341 df-recs 8390 df-rdg 8429 df-er 8728 df-en 8985 df-dom 8986 df-sdom 8987 df-pnf 11355 df-mnf 11356 df-xr 11357 df-ltxr 11358 df-le 11359 df-sub 11553 df-neg 11554 df-nn 12346 df-n0 12617 df-z 12704 |
| This theorem is used by: crctcshwlkn0lem6 30416 crctcshwlkn0lem7 30417 |
| Copyright terms: Public domain | W3C validator |