| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > axlowdimlem5 | Structured version Visualization version GIF version | ||
| Description: Lemma for axlowdim 29289. Show that a particular union is a point in Euclidean space. (Contributed by Scott Fenton, 29-Jun-2013.) |
| Ref | Expression |
|---|---|
| axlowdimlem4.1 | ⊢ 𝐴 ∈ ℝ |
| axlowdimlem4.2 | ⊢ 𝐵 ∈ ℝ |
| Ref | Expression |
|---|---|
| axlowdimlem5 | ⊢ (𝑁 ∈ (ℤ≥‘2) → ({〈1, 𝐴〉, 〈2, 𝐵〉} ∪ ((3...𝑁) × {0})) ∈ (𝔼‘𝑁)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | axlowdimlem4.1 | . . . . . 6 ⊢ 𝐴 ∈ ℝ | |
| 2 | axlowdimlem4.2 | . . . . . 6 ⊢ 𝐵 ∈ ℝ | |
| 3 | 1, 2 | axlowdimlem4 29273 | . . . . 5 ⊢ {〈1, 𝐴〉, 〈2, 𝐵〉}:(1...2)⟶ℝ |
| 4 | axlowdimlem1 29270 | . . . . 5 ⊢ ((3...𝑁) × {0}):(3...𝑁)⟶ℝ | |
| 5 | 3, 4 | pm3.2i 475 | . . . 4 ⊢ ({〈1, 𝐴〉, 〈2, 𝐵〉}:(1...2)⟶ℝ ∧ ((3...𝑁) × {0}):(3...𝑁)⟶ℝ) |
| 6 | axlowdimlem2 29271 | . . . 4 ⊢ ((1...2) ∩ (3...𝑁)) = ∅ | |
| 7 | fun2 6743 | . . . 4 ⊢ ((({〈1, 𝐴〉, 〈2, 𝐵〉}:(1...2)⟶ℝ ∧ ((3...𝑁) × {0}):(3...𝑁)⟶ℝ) ∧ ((1...2) ∩ (3...𝑁)) = ∅) → ({〈1, 𝐴〉, 〈2, 𝐵〉} ∪ ((3...𝑁) × {0})):((1...2) ∪ (3...𝑁))⟶ℝ) | |
| 8 | 5, 6, 7 | mp2an 704 | . . 3 ⊢ ({〈1, 𝐴〉, 〈2, 𝐵〉} ∪ ((3...𝑁) × {0})):((1...2) ∪ (3...𝑁))⟶ℝ |
| 9 | axlowdimlem3 29272 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘2) → (1...𝑁) = ((1...2) ∪ (3...𝑁))) | |
| 10 | 9 | feq2d 6691 | . . 3 ⊢ (𝑁 ∈ (ℤ≥‘2) → (({〈1, 𝐴〉, 〈2, 𝐵〉} ∪ ((3...𝑁) × {0})):(1...𝑁)⟶ℝ ↔ ({〈1, 𝐴〉, 〈2, 𝐵〉} ∪ ((3...𝑁) × {0})):((1...2) ∪ (3...𝑁))⟶ℝ)) |
| 11 | 8, 10 | mpbiri 261 | . 2 ⊢ (𝑁 ∈ (ℤ≥‘2) → ({〈1, 𝐴〉, 〈2, 𝐵〉} ∪ ((3...𝑁) × {0})):(1...𝑁)⟶ℝ) |
| 12 | eluz2nn 12913 | . . 3 ⊢ (𝑁 ∈ (ℤ≥‘2) → 𝑁 ∈ ℕ) | |
| 13 | elee 29221 | . . 3 ⊢ (𝑁 ∈ ℕ → (({〈1, 𝐴〉, 〈2, 𝐵〉} ∪ ((3...𝑁) × {0})) ∈ (𝔼‘𝑁) ↔ ({〈1, 𝐴〉, 〈2, 𝐵〉} ∪ ((3...𝑁) × {0})):(1...𝑁)⟶ℝ)) | |
| 14 | 12, 13 | syl 18 | . 2 ⊢ (𝑁 ∈ (ℤ≥‘2) → (({〈1, 𝐴〉, 〈2, 𝐵〉} ∪ ((3...𝑁) × {0})) ∈ (𝔼‘𝑁) ↔ ({〈1, 𝐴〉, 〈2, 𝐵〉} ∪ ((3...𝑁) × {0})):(1...𝑁)⟶ℝ)) |
| 15 | 11, 14 | mpbird 260 | 1 ⊢ (𝑁 ∈ (ℤ≥‘2) → ({〈1, 𝐴〉, 〈2, 𝐵〉} ∪ ((3...𝑁) × {0})) ∈ (𝔼‘𝑁)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 209 ∧ wa 400 = wceq 1570 ∈ wcel 2143 ∪ cun 3904 ∩ cin 3905 ∅c0 4287 {csn 4590 {cpr 4592 〈cop 4596 × cxp 5661 ⟶wf 6534 ‘cfv 6538 (class class class)co 7412 ℝcr 11100 0cc0 11101 1c1 11102 ℕcn 12234 2c2 12296 3c3 12297 ℤ≥cuz 12863 ...cfz 13536 𝔼cee 29215 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5258 ax-nul 5270 ax-pow 5338 ax-pr 5406 ax-un 7734 ax-cnex 11157 ax-resscn 11158 ax-1cn 11159 ax-icn 11160 ax-addcl 11161 ax-addrcl 11162 ax-mulcl 11163 ax-mulrcl 11164 ax-mulcom 11165 ax-addass 11166 ax-mulass 11167 ax-distr 11168 ax-i2m1 11169 ax-1ne0 11170 ax-1rid 11171 ax-rnegex 11172 ax-rrecex 11173 ax-cnre 11174 ax-pre-lttri 11175 ax-pre-lttrn 11176 ax-pre-ltadd 11177 ax-pre-mulgt0 11178 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 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 3370 df-rab 3417 df-v 3457 df-sbc 3746 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4288 df-if 4489 df-pw 4565 df-sn 4591 df-pr 4593 df-op 4597 df-uni 4874 df-iun 4959 df-br 5111 df-opab 5175 df-mpt 5194 df-tr 5220 df-id 5558 df-eprel 5563 df-po 5571 df-so 5572 df-fr 5616 df-we 5618 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7864 df-1st 7987 df-2nd 7988 df-frecs 8279 df-wrecs 8310 df-recs 8359 df-rdg 8398 df-er 8695 df-map 8827 df-en 8945 df-dom 8946 df-sdom 8947 df-pnf 11246 df-mnf 11247 df-xr 11248 df-ltxr 11249 df-le 11250 df-sub 11444 df-neg 11445 df-nn 12235 df-2 12304 df-3 12305 df-n0 12506 df-z 12593 df-uz 12864 df-fz 13537 df-ee 29218 |
| This theorem is referenced by: axlowdimlem6 29275 axlowdimlem17 29286 axlowdim2 29288 axlowdim 29289 |
| Copyright terms: Public domain | W3C validator |