| Mathbox for Stefan O'Rear |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > Mathboxes > mapfzcons2 | Structured version Visualization version GIF version | ||
| Description: Recover added element from an extended mapping. (Contributed by Stefan O'Rear, 10-Oct-2014.) (Revised by Stefan O'Rear, 5-May-2015.) |
| Ref | Expression |
|---|---|
| mapfzcons.1 | ⊢ 𝑀 = (𝑁 + 1) |
| Ref | Expression |
|---|---|
| mapfzcons2 | ⊢ ((𝐴 ∈ (𝐵 ↑m (1...𝑁)) ∧ 𝐶 ∈ 𝐵) → ((𝐴 ∪ {〈𝑀, 𝐶〉})‘𝑀) = 𝐶) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | mapfzcons.1 | . . . 4 ⊢ 𝑀 = (𝑁 + 1) | |
| 2 | ovex 7444 | . . . 4 ⊢ (𝑁 + 1) ∈ V | |
| 3 | 1, 2 | eqeltri 2865 | . . 3 ⊢ 𝑀 ∈ V |
| 4 | 3 | a1i 11 | . 2 ⊢ ((𝐴 ∈ (𝐵 ↑m (1...𝑁)) ∧ 𝐶 ∈ 𝐵) → 𝑀 ∈ V) |
| 5 | elex 3484 | . . 3 ⊢ (𝐶 ∈ 𝐵 → 𝐶 ∈ V) | |
| 6 | 5 | adantl 486 | . 2 ⊢ ((𝐴 ∈ (𝐵 ↑m (1...𝑁)) ∧ 𝐶 ∈ 𝐵) → 𝐶 ∈ V) |
| 7 | elmapi 8846 | . . . . . . 7 ⊢ (𝐴 ∈ (𝐵 ↑m (1...𝑁)) → 𝐴:(1...𝑁)⟶𝐵) | |
| 8 | 7 | fdmd 6717 | . . . . . 6 ⊢ (𝐴 ∈ (𝐵 ↑m (1...𝑁)) → dom 𝐴 = (1...𝑁)) |
| 9 | 8 | adantr 485 | . . . . 5 ⊢ ((𝐴 ∈ (𝐵 ↑m (1...𝑁)) ∧ 𝐶 ∈ 𝐵) → dom 𝐴 = (1...𝑁)) |
| 10 | 9 | ineq1d 4180 | . . . 4 ⊢ ((𝐴 ∈ (𝐵 ↑m (1...𝑁)) ∧ 𝐶 ∈ 𝐵) → (dom 𝐴 ∩ {𝑀}) = ((1...𝑁) ∩ {𝑀})) |
| 11 | 1 | sneqi 4605 | . . . . . 6 ⊢ {𝑀} = {(𝑁 + 1)} |
| 12 | 11 | ineq2i 4178 | . . . . 5 ⊢ ((1...𝑁) ∩ {𝑀}) = ((1...𝑁) ∩ {(𝑁 + 1)}) |
| 13 | fzp1disj 13611 | . . . . 5 ⊢ ((1...𝑁) ∩ {(𝑁 + 1)}) = ∅ | |
| 14 | 12, 13 | eqtri 2792 | . . . 4 ⊢ ((1...𝑁) ∩ {𝑀}) = ∅ |
| 15 | 10, 14 | eqtrdi 2820 | . . 3 ⊢ ((𝐴 ∈ (𝐵 ↑m (1...𝑁)) ∧ 𝐶 ∈ 𝐵) → (dom 𝐴 ∩ {𝑀}) = ∅) |
| 16 | disjsn 4682 | . . 3 ⊢ ((dom 𝐴 ∩ {𝑀}) = ∅ ↔ ¬ 𝑀 ∈ dom 𝐴) | |
| 17 | 15, 16 | sylib 221 | . 2 ⊢ ((𝐴 ∈ (𝐵 ↑m (1...𝑁)) ∧ 𝐶 ∈ 𝐵) → ¬ 𝑀 ∈ dom 𝐴) |
| 18 | fsnunfv 7186 | . 2 ⊢ ((𝑀 ∈ V ∧ 𝐶 ∈ V ∧ ¬ 𝑀 ∈ dom 𝐴) → ((𝐴 ∪ {〈𝑀, 𝐶〉})‘𝑀) = 𝐶) | |
| 19 | 4, 6, 17, 18 | syl3anc 1396 | 1 ⊢ ((𝐴 ∈ (𝐵 ↑m (1...𝑁)) ∧ 𝐶 ∈ 𝐵) → ((𝐴 ∪ {〈𝑀, 𝐶〉})‘𝑀) = 𝐶) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ∧ wa 400 = wceq 1567 ∈ wcel 2149 Vcvv 3463 ∪ cun 3911 ∩ cin 3912 ∅c0 4294 {csn 4594 〈cop 4600 dom cdm 5662 ‘cfv 6537 (class class class)co 7411 ↑m cmap 8824 1c1 11101 + caddc 11103 ...cfz 13535 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-sep 5261 ax-nul 5271 ax-pow 5337 ax-pr 5405 ax-un 7733 ax-cnex 11156 ax-resscn 11157 ax-1cn 11158 ax-icn 11159 ax-addcl 11160 ax-addrcl 11161 ax-mulcl 11162 ax-mulrcl 11163 ax-mulcom 11164 ax-addass 11165 ax-mulass 11166 ax-distr 11167 ax-i2m1 11168 ax-1ne0 11169 ax-1rid 11170 ax-rnegex 11171 ax-rrecex 11172 ax-cnre 11173 ax-pre-lttri 11174 ax-pre-lttrn 11175 ax-pre-ltadd 11176 ax-pre-mulgt0 11177 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-nel 3071 df-ral 3086 df-rex 3096 df-reu 3377 df-rab 3424 df-v 3465 df-sbc 3754 df-csb 3862 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-nul 4295 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4877 df-iun 4962 df-br 5114 df-opab 5178 df-mpt 5197 df-id 5557 df-po 5570 df-so 5571 df-xp 5668 df-rel 5669 df-cnv 5670 df-co 5671 df-dm 5672 df-rn 5673 df-res 5674 df-ima 5675 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 7368 df-ov 7414 df-oprab 7415 df-mpo 7416 df-1st 7986 df-2nd 7987 df-er 8694 df-map 8826 df-en 8944 df-dom 8945 df-sdom 8946 df-pnf 11245 df-mnf 11246 df-xr 11247 df-ltxr 11248 df-le 11249 df-sub 11443 df-neg 11444 df-z 12592 df-uz 12863 df-fz 13536 |
| This theorem is referenced by: rexrabdioph 43413 |
| Copyright terms: Public domain | W3C validator |