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| Mirrors > Home > MPE Home > Th. List > nn0p1elfzo | Structured version Visualization version GIF version | ||
| Description: A nonnegative integer increased by 1 which is less than or equal to another integer is an element of a half-open range of integers. (Contributed by AV, 27-Feb-2021.) |
| Ref | Expression |
|---|---|
| nn0p1elfzo | ⊢ ((𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0 ∧ (𝐾 + 1) ≤ 𝑁) → 𝐾 ∈ (0..^𝑁)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nn0ltp1le 12660 | . . . 4 ⊢ ((𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0) → (𝐾 < 𝑁 ↔ (𝐾 + 1) ≤ 𝑁)) | |
| 2 | 1 | biimp3ar 1498 | . . 3 ⊢ ((𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0 ∧ (𝐾 + 1) ≤ 𝑁) → 𝐾 < 𝑁) |
| 3 | simpl1 1209 | . . . 4 ⊢ (((𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0 ∧ (𝐾 + 1) ≤ 𝑁) ∧ 𝐾 < 𝑁) → 𝐾 ∈ ℕ0) | |
| 4 | simpr 489 | . . . . . . 7 ⊢ ((𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0) → 𝑁 ∈ ℕ0) | |
| 5 | 4 | adantr 485 | . . . . . 6 ⊢ (((𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0) ∧ 𝐾 < 𝑁) → 𝑁 ∈ ℕ0) |
| 6 | nn0ge0 12535 | . . . . . . . . 9 ⊢ (𝐾 ∈ ℕ0 → 0 ≤ 𝐾) | |
| 7 | 6 | adantr 485 | . . . . . . . 8 ⊢ ((𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0) → 0 ≤ 𝐾) |
| 8 | 0re 11216 | . . . . . . . . 9 ⊢ 0 ∈ ℝ | |
| 9 | nn0re 12519 | . . . . . . . . 9 ⊢ (𝐾 ∈ ℕ0 → 𝐾 ∈ ℝ) | |
| 10 | nn0re 12519 | . . . . . . . . 9 ⊢ (𝑁 ∈ ℕ0 → 𝑁 ∈ ℝ) | |
| 11 | lelttr 11306 | . . . . . . . . 9 ⊢ ((0 ∈ ℝ ∧ 𝐾 ∈ ℝ ∧ 𝑁 ∈ ℝ) → ((0 ≤ 𝐾 ∧ 𝐾 < 𝑁) → 0 < 𝑁)) | |
| 12 | 8, 9, 10, 11 | mp3an3an 1495 | . . . . . . . 8 ⊢ ((𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0) → ((0 ≤ 𝐾 ∧ 𝐾 < 𝑁) → 0 < 𝑁)) |
| 13 | 7, 12 | mpand 707 | . . . . . . 7 ⊢ ((𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0) → (𝐾 < 𝑁 → 0 < 𝑁)) |
| 14 | 13 | imp 411 | . . . . . 6 ⊢ (((𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0) ∧ 𝐾 < 𝑁) → 0 < 𝑁) |
| 15 | elnnnn0b 12554 | . . . . . 6 ⊢ (𝑁 ∈ ℕ ↔ (𝑁 ∈ ℕ0 ∧ 0 < 𝑁)) | |
| 16 | 5, 14, 15 | sylanbrc 594 | . . . . 5 ⊢ (((𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0) ∧ 𝐾 < 𝑁) → 𝑁 ∈ ℕ) |
| 17 | 16 | 3adantl3 1186 | . . . 4 ⊢ (((𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0 ∧ (𝐾 + 1) ≤ 𝑁) ∧ 𝐾 < 𝑁) → 𝑁 ∈ ℕ) |
| 18 | simpr 489 | . . . 4 ⊢ (((𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0 ∧ (𝐾 + 1) ≤ 𝑁) ∧ 𝐾 < 𝑁) → 𝐾 < 𝑁) | |
| 19 | 3, 17, 18 | 3jca 1145 | . . 3 ⊢ (((𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0 ∧ (𝐾 + 1) ≤ 𝑁) ∧ 𝐾 < 𝑁) → (𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ ∧ 𝐾 < 𝑁)) |
| 20 | 2, 19 | mpdan 699 | . 2 ⊢ ((𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0 ∧ (𝐾 + 1) ≤ 𝑁) → (𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ ∧ 𝐾 < 𝑁)) |
| 21 | elfzo0 13736 | . 2 ⊢ (𝐾 ∈ (0..^𝑁) ↔ (𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ ∧ 𝐾 < 𝑁)) | |
| 22 | 20, 21 | sylibr 237 | 1 ⊢ ((𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0 ∧ (𝐾 + 1) ≤ 𝑁) → 𝐾 ∈ (0..^𝑁)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 400 ∧ w3a 1102 ∈ wcel 2142 class class class wbr 5108 (class class class)co 7412 ℝcr 11105 0cc0 11106 1c1 11107 + caddc 11109 < clt 11249 ≤ cle 11250 ℕcn 12239 ℕ0cn0 12510 ..^cfzo 13689 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1824 ax-4 1838 ax-5 1939 ax-6 1996 ax-7 2037 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-sep 5256 ax-nul 5268 ax-pow 5335 ax-pr 5403 ax-un 7734 ax-cnex 11162 ax-resscn 11163 ax-1cn 11164 ax-icn 11165 ax-addcl 11166 ax-addrcl 11167 ax-mulcl 11168 ax-mulrcl 11169 ax-mulcom 11170 ax-addass 11171 ax-mulass 11172 ax-distr 11173 ax-i2m1 11174 ax-1ne0 11175 ax-1rid 11176 ax-rnegex 11177 ax-rrecex 11178 ax-cnre 11179 ax-pre-lttri 11180 ax-pre-lttrn 11181 ax-pre-ltadd 11182 ax-pre-mulgt0 11183 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1103 df-3an 1104 df-tru 1572 df-fal 1582 df-ex 1809 df-nf 1813 df-sb 2096 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3064 df-ral 3079 df-rex 3089 df-reu 3369 df-rab 3416 df-v 3456 df-sbc 3744 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4487 df-pw 4563 df-sn 4589 df-pr 4591 df-op 4595 df-uni 4872 df-iun 4957 df-br 5109 df-opab 5173 df-mpt 5192 df-tr 5218 df-id 5555 df-eprel 5560 df-po 5568 df-so 5569 df-fr 5613 df-we 5615 df-xp 5666 df-rel 5667 df-cnv 5668 df-co 5669 df-dm 5670 df-rn 5671 df-res 5672 df-ima 5673 df-pred 6302 df-ord 6363 df-on 6364 df-lim 6365 df-suc 6366 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7861 df-1st 7984 df-2nd 7985 df-frecs 8276 df-wrecs 8307 df-recs 8356 df-rdg 8395 df-er 8692 df-en 8942 df-dom 8943 df-sdom 8944 df-pnf 11251 df-mnf 11252 df-xr 11253 df-ltxr 11254 df-le 11255 df-sub 11449 df-neg 11450 df-nn 12240 df-n0 12511 df-z 12598 df-uz 12869 df-fz 13542 df-fzo 13690 |
| This theorem is used by: chnrev 18689 wwlksnextproplem1 30269 eupth2lem3 30598 wrdt2ind 33282 |
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