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| Mirrors > Home > MPE Home > Th. List > elfznelfzob | Structured version Visualization version GIF version | ||
| Description: A value in a finite set of sequential integers is a border value if and only if it is not contained in the half-open integer range contained in the finite set of sequential integers. (Contributed by Alexander van der Vekens, 17-Jan-2018.) (Revised by Thierry Arnoux, 22-Dec-2021.) |
| Ref | Expression |
|---|---|
| elfznelfzob | ⊢ (𝑀 ∈ (0...𝐾) → (¬ 𝑀 ∈ (1..^𝐾) ↔ (𝑀 = 0 ∨ 𝑀 = 𝐾))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elfznelfzo 13831 | . . 3 ⊢ ((𝑀 ∈ (0...𝐾) ∧ ¬ 𝑀 ∈ (1..^𝐾)) → (𝑀 = 0 ∨ 𝑀 = 𝐾)) | |
| 2 | 1 | ex 418 | . 2 ⊢ (𝑀 ∈ (0...𝐾) → (¬ 𝑀 ∈ (1..^𝐾) → (𝑀 = 0 ∨ 𝑀 = 𝐾))) |
| 3 | elfzole1 13725 | . . . . . 6 ⊢ (𝑀 ∈ (1..^𝐾) → 1 ≤ 𝑀) | |
| 4 | elfzolt2 13726 | . . . . . . 7 ⊢ (𝑀 ∈ (1..^𝐾) → 𝑀 < 𝐾) | |
| 5 | elfzoel2 13715 | . . . . . . 7 ⊢ (𝑀 ∈ (1..^𝐾) → 𝐾 ∈ ℤ) | |
| 6 | elfzoelz 13716 | . . . . . . 7 ⊢ (𝑀 ∈ (1..^𝐾) → 𝑀 ∈ ℤ) | |
| 7 | 0lt1 11763 | . . . . . . . . . . 11 ⊢ 0 < 1 | |
| 8 | breq1 5110 | . . . . . . . . . . 11 ⊢ (𝑀 = 0 → (𝑀 < 1 ↔ 0 < 1)) | |
| 9 | 7, 8 | mpbiri 261 | . . . . . . . . . 10 ⊢ (𝑀 = 0 → 𝑀 < 1) |
| 10 | zre 12622 | . . . . . . . . . . . 12 ⊢ (𝑀 ∈ ℤ → 𝑀 ∈ ℝ) | |
| 11 | 10 | adantl 487 | . . . . . . . . . . 11 ⊢ (((𝑀 < 𝐾 ∧ 𝐾 ∈ ℤ) ∧ 𝑀 ∈ ℤ) → 𝑀 ∈ ℝ) |
| 12 | 1red 11236 | . . . . . . . . . . 11 ⊢ (((𝑀 < 𝐾 ∧ 𝐾 ∈ ℤ) ∧ 𝑀 ∈ ℤ) → 1 ∈ ℝ) | |
| 13 | 11, 12 | ltnled 11384 | . . . . . . . . . 10 ⊢ (((𝑀 < 𝐾 ∧ 𝐾 ∈ ℤ) ∧ 𝑀 ∈ ℤ) → (𝑀 < 1 ↔ ¬ 1 ≤ 𝑀)) |
| 14 | 9, 13 | imbitrid 247 | . . . . . . . . 9 ⊢ (((𝑀 < 𝐾 ∧ 𝐾 ∈ ℤ) ∧ 𝑀 ∈ ℤ) → (𝑀 = 0 → ¬ 1 ≤ 𝑀)) |
| 15 | 14 | con2d 135 | . . . . . . . 8 ⊢ (((𝑀 < 𝐾 ∧ 𝐾 ∈ ℤ) ∧ 𝑀 ∈ ℤ) → (1 ≤ 𝑀 → ¬ 𝑀 = 0)) |
| 16 | zre 12622 | . . . . . . . . . . . . . 14 ⊢ (𝐾 ∈ ℤ → 𝐾 ∈ ℝ) | |
| 17 | ltlen 11338 | . . . . . . . . . . . . . 14 ⊢ ((𝑀 ∈ ℝ ∧ 𝐾 ∈ ℝ) → (𝑀 < 𝐾 ↔ (𝑀 ≤ 𝐾 ∧ 𝐾 ≠ 𝑀))) | |
| 18 | 10, 16, 17 | syl2anr 609 | . . . . . . . . . . . . 13 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ) → (𝑀 < 𝐾 ↔ (𝑀 ≤ 𝐾 ∧ 𝐾 ≠ 𝑀))) |
| 19 | necom 3010 | . . . . . . . . . . . . . . 15 ⊢ (𝐾 ≠ 𝑀 ↔ 𝑀 ≠ 𝐾) | |
| 20 | df-ne 2958 | . . . . . . . . . . . . . . 15 ⊢ (𝑀 ≠ 𝐾 ↔ ¬ 𝑀 = 𝐾) | |
| 21 | 19, 20 | sylbb 222 | . . . . . . . . . . . . . 14 ⊢ (𝐾 ≠ 𝑀 → ¬ 𝑀 = 𝐾) |
| 22 | 21 | adantl 487 | . . . . . . . . . . . . 13 ⊢ ((𝑀 ≤ 𝐾 ∧ 𝐾 ≠ 𝑀) → ¬ 𝑀 = 𝐾) |
| 23 | 18, 22 | biimtrdi 256 | . . . . . . . . . . . 12 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ) → (𝑀 < 𝐾 → ¬ 𝑀 = 𝐾)) |
| 24 | 23 | ex 418 | . . . . . . . . . . 11 ⊢ (𝐾 ∈ ℤ → (𝑀 ∈ ℤ → (𝑀 < 𝐾 → ¬ 𝑀 = 𝐾))) |
| 25 | 24 | com23 87 | . . . . . . . . . 10 ⊢ (𝐾 ∈ ℤ → (𝑀 < 𝐾 → (𝑀 ∈ ℤ → ¬ 𝑀 = 𝐾))) |
| 26 | 25 | impcom 413 | . . . . . . . . 9 ⊢ ((𝑀 < 𝐾 ∧ 𝐾 ∈ ℤ) → (𝑀 ∈ ℤ → ¬ 𝑀 = 𝐾)) |
| 27 | 26 | imp 412 | . . . . . . . 8 ⊢ (((𝑀 < 𝐾 ∧ 𝐾 ∈ ℤ) ∧ 𝑀 ∈ ℤ) → ¬ 𝑀 = 𝐾) |
| 28 | 15, 27 | jctird 536 | . . . . . . 7 ⊢ (((𝑀 < 𝐾 ∧ 𝐾 ∈ ℤ) ∧ 𝑀 ∈ ℤ) → (1 ≤ 𝑀 → (¬ 𝑀 = 0 ∧ ¬ 𝑀 = 𝐾))) |
| 29 | 4, 5, 6, 28 | syl21anc 851 | . . . . . 6 ⊢ (𝑀 ∈ (1..^𝐾) → (1 ≤ 𝑀 → (¬ 𝑀 = 0 ∧ ¬ 𝑀 = 𝐾))) |
| 30 | 3, 29 | mpd 16 | . . . . 5 ⊢ (𝑀 ∈ (1..^𝐾) → (¬ 𝑀 = 0 ∧ ¬ 𝑀 = 𝐾)) |
| 31 | ioran 999 | . . . . 5 ⊢ (¬ (𝑀 = 0 ∨ 𝑀 = 𝐾) ↔ (¬ 𝑀 = 0 ∧ ¬ 𝑀 = 𝐾)) | |
| 32 | 30, 31 | sylibr 237 | . . . 4 ⊢ (𝑀 ∈ (1..^𝐾) → ¬ (𝑀 = 0 ∨ 𝑀 = 𝐾)) |
| 33 | 32 | a1i 11 | . . 3 ⊢ (𝑀 ∈ (0...𝐾) → (𝑀 ∈ (1..^𝐾) → ¬ (𝑀 = 0 ∨ 𝑀 = 𝐾))) |
| 34 | 33 | con2d 135 | . 2 ⊢ (𝑀 ∈ (0...𝐾) → ((𝑀 = 0 ∨ 𝑀 = 𝐾) → ¬ 𝑀 ∈ (1..^𝐾))) |
| 35 | 2, 34 | impbid 215 | 1 ⊢ (𝑀 ∈ (0...𝐾) → (¬ 𝑀 ∈ (1..^𝐾) ↔ (𝑀 = 0 ∨ 𝑀 = 𝐾))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 401 ∨ wo 861 = wceq 1570 ∈ wcel 2145 ≠ wne 2957 class class class wbr 5107 (class class class)co 7416 ℝcr 11126 0cc0 11127 1c1 11128 < clt 11270 ≤ cle 11271 ℤcz 12618 ...cfz 13563 ..^cfzo 13711 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2734 ax-sep 5255 ax-nul 5267 ax-pow 5334 ax-pr 5402 ax-un 7739 ax-cnex 11183 ax-resscn 11184 ax-1cn 11185 ax-icn 11186 ax-addcl 11187 ax-addrcl 11188 ax-mulcl 11189 ax-mulrcl 11190 ax-mulcom 11191 ax-addass 11192 ax-mulass 11193 ax-distr 11194 ax-i2m1 11195 ax-1ne0 11196 ax-1rid 11197 ax-rnegex 11198 ax-rrecex 11199 ax-cnre 11200 ax-pre-lttri 11201 ax-pre-lttrn 11202 ax-pre-ltadd 11203 ax-pre-mulgt0 11204 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 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 3368 df-rab 3415 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-iun 4956 df-br 5108 df-opab 5172 df-mpt 5191 df-tr 5217 df-id 5554 df-eprel 5559 df-po 5567 df-so 5568 df-fr 5612 df-we 5614 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-pred 6303 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7373 df-ov 7419 df-oprab 7420 df-mpo 7421 df-om 7866 df-1st 7989 df-2nd 7990 df-frecs 8283 df-wrecs 8314 df-recs 8363 df-rdg 8402 df-er 8699 df-en 8956 df-dom 8957 df-sdom 8958 df-pnf 11272 df-mnf 11273 df-xr 11274 df-ltxr 11275 df-le 11276 df-sub 11470 df-neg 11471 df-nn 12261 df-n0 12532 df-z 12619 df-uz 12891 df-fz 13564 df-fzo 13712 |
| This theorem is used by: circlemethhgt 35153 |
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