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| Mirrors > Home > ILE Home > Th. List > zlem1lt | GIF version | ||
| Description: Integer ordering relation. (Contributed by NM, 13-Nov-2004.) |
| Ref | Expression |
|---|---|
| zlem1lt | ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀 ≤ 𝑁 ↔ (𝑀 − 1) < 𝑁)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | peano2zm 9682 | . . 3 ⊢ (𝑀 ∈ ℤ → (𝑀 − 1) ∈ ℤ) | |
| 2 | zltp1le 9699 | . . 3 ⊢ (((𝑀 − 1) ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝑀 − 1) < 𝑁 ↔ ((𝑀 − 1) + 1) ≤ 𝑁)) | |
| 3 | 1, 2 | sylan 283 | . 2 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝑀 − 1) < 𝑁 ↔ ((𝑀 − 1) + 1) ≤ 𝑁)) |
| 4 | zcn 9649 | . . . . 5 ⊢ (𝑀 ∈ ℤ → 𝑀 ∈ ℂ) | |
| 5 | ax-1cn 8272 | . . . . 5 ⊢ 1 ∈ ℂ | |
| 6 | npcan 8535 | . . . . 5 ⊢ ((𝑀 ∈ ℂ ∧ 1 ∈ ℂ) → ((𝑀 − 1) + 1) = 𝑀) | |
| 7 | 4, 5, 6 | sylancl 417 | . . . 4 ⊢ (𝑀 ∈ ℤ → ((𝑀 − 1) + 1) = 𝑀) |
| 8 | 7 | adantr 276 | . . 3 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝑀 − 1) + 1) = 𝑀) |
| 9 | 8 | breq1d 4140 | . 2 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (((𝑀 − 1) + 1) ≤ 𝑁 ↔ 𝑀 ≤ 𝑁)) |
| 10 | 3, 9 | bitr2d 189 | 1 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀 ≤ 𝑁 ↔ (𝑀 − 1) < 𝑁)) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 104 ↔ wb 105 = wceq 1402 ∈ wcel 2209 class class class wbr 4130 (class class class)co 6085 ℂcc 8177 1c1 8180 + caddc 8182 < clt 8360 ≤ cle 8361 − cmin 8497 ℤcz 9644 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4249 ax-pow 4311 ax-pr 4346 ax-un 4578 ax-setind 4684 ax-cnex 8270 ax-resscn 8271 ax-1cn 8272 ax-1re 8273 ax-icn 8274 ax-addcl 8275 ax-addrcl 8276 ax-mulcl 8277 ax-addcom 8279 ax-addass 8281 ax-distr 8283 ax-i2m1 8284 ax-0lt1 8285 ax-0id 8287 ax-rnegex 8288 ax-cnre 8290 ax-pre-ltirr 8291 ax-pre-ltwlin 8292 ax-pre-lttrn 8293 ax-pre-ltadd 8295 |
| This proof depends on definitions: df-bi 117 df-3or 1010 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-nel 2516 df-ral 2533 df-rex 2534 df-reu 2535 df-rab 2537 df-v 2823 df-sbc 3052 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-int 3971 df-br 4131 df-opab 4193 df-id 4438 df-xp 4780 df-rel 4781 df-cnv 4782 df-co 4783 df-dm 4784 df-iota 5337 df-fun 5379 df-fv 5385 df-riota 6038 df-ov 6088 df-oprab 6089 df-mpo 6090 df-pnf 8362 df-mnf 8363 df-xr 8364 df-ltxr 8365 df-le 8366 df-sub 8499 df-neg 8500 df-inn 9305 df-n0 9564 df-z 9645 |
| This theorem is used by: nn0lem1lt 9729 nnlem1lt 9730 fzsplit3 10458 uzdisj 10500 nn0disj 10545 fzon 10574 ssfzo12 10642 ceiqle 10750 nn0ltexp2 11147 bitsfzolem 12721 bitscmp 12725 bitsinv1lem 12728 hashdvds 12999 ballotfilemfc0 13232 ballotfilemfcc 13233 ballotfilemimin 13249 ballotfilemfrceq 13272 ballotfilemfrcn0 13273 lgsquadlem1 16196 |
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