| Mathbox for Stefan O'Rear |
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| 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 7401 | . . . 4 ⊢ (𝑁 + 1) ∈ V | |
| 3 | 1, 2 | eqeltri 2833 | . . 3 ⊢ 𝑀 ∈ V |
| 4 | 3 | a1i 11 | . 2 ⊢ ((𝐴 ∈ (𝐵 ↑m (1...𝑁)) ∧ 𝐶 ∈ 𝐵) → 𝑀 ∈ V) |
| 5 | elex 3463 | . . 3 ⊢ (𝐶 ∈ 𝐵 → 𝐶 ∈ V) | |
| 6 | 5 | adantl 481 | . 2 ⊢ ((𝐴 ∈ (𝐵 ↑m (1...𝑁)) ∧ 𝐶 ∈ 𝐵) → 𝐶 ∈ V) |
| 7 | elmapi 8798 | . . . . . . 7 ⊢ (𝐴 ∈ (𝐵 ↑m (1...𝑁)) → 𝐴:(1...𝑁)⟶𝐵) | |
| 8 | 7 | fdmd 6680 | . . . . . 6 ⊢ (𝐴 ∈ (𝐵 ↑m (1...𝑁)) → dom 𝐴 = (1...𝑁)) |
| 9 | 8 | adantr 480 | . . . . 5 ⊢ ((𝐴 ∈ (𝐵 ↑m (1...𝑁)) ∧ 𝐶 ∈ 𝐵) → dom 𝐴 = (1...𝑁)) |
| 10 | 9 | ineq1d 4173 | . . . 4 ⊢ ((𝐴 ∈ (𝐵 ↑m (1...𝑁)) ∧ 𝐶 ∈ 𝐵) → (dom 𝐴 ∩ {𝑀}) = ((1...𝑁) ∩ {𝑀})) |
| 11 | 1 | sneqi 4593 | . . . . . 6 ⊢ {𝑀} = {(𝑁 + 1)} |
| 12 | 11 | ineq2i 4171 | . . . . 5 ⊢ ((1...𝑁) ∩ {𝑀}) = ((1...𝑁) ∩ {(𝑁 + 1)}) |
| 13 | fzp1disj 13511 | . . . . 5 ⊢ ((1...𝑁) ∩ {(𝑁 + 1)}) = ∅ | |
| 14 | 12, 13 | eqtri 2760 | . . . 4 ⊢ ((1...𝑁) ∩ {𝑀}) = ∅ |
| 15 | 10, 14 | eqtrdi 2788 | . . 3 ⊢ ((𝐴 ∈ (𝐵 ↑m (1...𝑁)) ∧ 𝐶 ∈ 𝐵) → (dom 𝐴 ∩ {𝑀}) = ∅) |
| 16 | disjsn 4670 | . . 3 ⊢ ((dom 𝐴 ∩ {𝑀}) = ∅ ↔ ¬ 𝑀 ∈ dom 𝐴) | |
| 17 | 15, 16 | sylib 218 | . 2 ⊢ ((𝐴 ∈ (𝐵 ↑m (1...𝑁)) ∧ 𝐶 ∈ 𝐵) → ¬ 𝑀 ∈ dom 𝐴) |
| 18 | fsnunfv 7143 | . 2 ⊢ ((𝑀 ∈ V ∧ 𝐶 ∈ V ∧ ¬ 𝑀 ∈ dom 𝐴) → ((𝐴 ∪ {〈𝑀, 𝐶〉})‘𝑀) = 𝐶) | |
| 19 | 4, 6, 17, 18 | syl3anc 1374 | 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 395 = wceq 1542 ∈ wcel 2114 Vcvv 3442 ∪ cun 3901 ∩ cin 3902 ∅c0 4287 {csn 4582 〈cop 4588 dom cdm 5632 ‘cfv 6500 (class class class)co 7368 ↑m cmap 8775 1c1 11039 + caddc 11041 ...cfz 13435 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5243 ax-nul 5253 ax-pow 5312 ax-pr 5379 ax-un 7690 ax-cnex 11094 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-addrcl 11099 ax-mulcl 11100 ax-mulrcl 11101 ax-mulcom 11102 ax-addass 11103 ax-mulass 11104 ax-distr 11105 ax-i2m1 11106 ax-1ne0 11107 ax-1rid 11108 ax-rnegex 11109 ax-rrecex 11110 ax-cnre 11111 ax-pre-lttri 11112 ax-pre-lttrn 11113 ax-pre-ltadd 11114 ax-pre-mulgt0 11115 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-reu 3353 df-rab 3402 df-v 3444 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-iun 4950 df-br 5101 df-opab 5163 df-mpt 5182 df-id 5527 df-po 5540 df-so 5541 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-rn 5643 df-res 5644 df-ima 5645 df-iota 6456 df-fun 6502 df-fn 6503 df-f 6504 df-f1 6505 df-fo 6506 df-f1o 6507 df-fv 6508 df-riota 7325 df-ov 7371 df-oprab 7372 df-mpo 7373 df-1st 7943 df-2nd 7944 df-er 8645 df-map 8777 df-en 8896 df-dom 8897 df-sdom 8898 df-pnf 11180 df-mnf 11181 df-xr 11182 df-ltxr 11183 df-le 11184 df-sub 11378 df-neg 11379 df-z 12501 df-uz 12764 df-fz 13436 |
| This theorem is referenced by: rexrabdioph 43151 |
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