Mathbox for Stefan O'Rear |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > mapfzcons1 | Structured version Visualization version GIF version |
Description: Recover prefix mapping 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 |
---|---|
mapfzcons1 | ⊢ (𝐴 ∈ (𝐵 ↑m (1...𝑁)) → ((𝐴 ∪ {〈𝑀, 𝐶〉}) ↾ (1...𝑁)) = 𝐴) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elmapi 8611 | . . . 4 ⊢ (𝐴 ∈ (𝐵 ↑m (1...𝑁)) → 𝐴:(1...𝑁)⟶𝐵) | |
2 | ffn 6596 | . . . 4 ⊢ (𝐴:(1...𝑁)⟶𝐵 → 𝐴 Fn (1...𝑁)) | |
3 | fnresdm 6547 | . . . 4 ⊢ (𝐴 Fn (1...𝑁) → (𝐴 ↾ (1...𝑁)) = 𝐴) | |
4 | 1, 2, 3 | 3syl 18 | . . 3 ⊢ (𝐴 ∈ (𝐵 ↑m (1...𝑁)) → (𝐴 ↾ (1...𝑁)) = 𝐴) |
5 | 4 | uneq1d 4100 | . 2 ⊢ (𝐴 ∈ (𝐵 ↑m (1...𝑁)) → ((𝐴 ↾ (1...𝑁)) ∪ ({〈𝑀, 𝐶〉} ↾ (1...𝑁))) = (𝐴 ∪ ({〈𝑀, 𝐶〉} ↾ (1...𝑁)))) |
6 | resundir 5903 | . 2 ⊢ ((𝐴 ∪ {〈𝑀, 𝐶〉}) ↾ (1...𝑁)) = ((𝐴 ↾ (1...𝑁)) ∪ ({〈𝑀, 𝐶〉} ↾ (1...𝑁))) | |
7 | dmres 5910 | . . . . . 6 ⊢ dom ({〈𝑀, 𝐶〉} ↾ (1...𝑁)) = ((1...𝑁) ∩ dom {〈𝑀, 𝐶〉}) | |
8 | dmsnopss 6114 | . . . . . . . . 9 ⊢ dom {〈𝑀, 𝐶〉} ⊆ {𝑀} | |
9 | mapfzcons.1 | . . . . . . . . . 10 ⊢ 𝑀 = (𝑁 + 1) | |
10 | 9 | sneqi 4577 | . . . . . . . . 9 ⊢ {𝑀} = {(𝑁 + 1)} |
11 | 8, 10 | sseqtri 3961 | . . . . . . . 8 ⊢ dom {〈𝑀, 𝐶〉} ⊆ {(𝑁 + 1)} |
12 | sslin 4173 | . . . . . . . 8 ⊢ (dom {〈𝑀, 𝐶〉} ⊆ {(𝑁 + 1)} → ((1...𝑁) ∩ dom {〈𝑀, 𝐶〉}) ⊆ ((1...𝑁) ∩ {(𝑁 + 1)})) | |
13 | 11, 12 | ax-mp 5 | . . . . . . 7 ⊢ ((1...𝑁) ∩ dom {〈𝑀, 𝐶〉}) ⊆ ((1...𝑁) ∩ {(𝑁 + 1)}) |
14 | fzp1disj 13297 | . . . . . . 7 ⊢ ((1...𝑁) ∩ {(𝑁 + 1)}) = ∅ | |
15 | sseq0 4338 | . . . . . . 7 ⊢ ((((1...𝑁) ∩ dom {〈𝑀, 𝐶〉}) ⊆ ((1...𝑁) ∩ {(𝑁 + 1)}) ∧ ((1...𝑁) ∩ {(𝑁 + 1)}) = ∅) → ((1...𝑁) ∩ dom {〈𝑀, 𝐶〉}) = ∅) | |
16 | 13, 14, 15 | mp2an 688 | . . . . . 6 ⊢ ((1...𝑁) ∩ dom {〈𝑀, 𝐶〉}) = ∅ |
17 | 7, 16 | eqtri 2767 | . . . . 5 ⊢ dom ({〈𝑀, 𝐶〉} ↾ (1...𝑁)) = ∅ |
18 | relres 5917 | . . . . . 6 ⊢ Rel ({〈𝑀, 𝐶〉} ↾ (1...𝑁)) | |
19 | reldm0 5834 | . . . . . 6 ⊢ (Rel ({〈𝑀, 𝐶〉} ↾ (1...𝑁)) → (({〈𝑀, 𝐶〉} ↾ (1...𝑁)) = ∅ ↔ dom ({〈𝑀, 𝐶〉} ↾ (1...𝑁)) = ∅)) | |
20 | 18, 19 | ax-mp 5 | . . . . 5 ⊢ (({〈𝑀, 𝐶〉} ↾ (1...𝑁)) = ∅ ↔ dom ({〈𝑀, 𝐶〉} ↾ (1...𝑁)) = ∅) |
21 | 17, 20 | mpbir 230 | . . . 4 ⊢ ({〈𝑀, 𝐶〉} ↾ (1...𝑁)) = ∅ |
22 | 21 | uneq2i 4098 | . . 3 ⊢ (𝐴 ∪ ({〈𝑀, 𝐶〉} ↾ (1...𝑁))) = (𝐴 ∪ ∅) |
23 | un0 4329 | . . 3 ⊢ (𝐴 ∪ ∅) = 𝐴 | |
24 | 22, 23 | eqtr2i 2768 | . 2 ⊢ 𝐴 = (𝐴 ∪ ({〈𝑀, 𝐶〉} ↾ (1...𝑁))) |
25 | 5, 6, 24 | 3eqtr4g 2804 | 1 ⊢ (𝐴 ∈ (𝐵 ↑m (1...𝑁)) → ((𝐴 ∪ {〈𝑀, 𝐶〉}) ↾ (1...𝑁)) = 𝐴) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 = wceq 1541 ∈ wcel 2109 ∪ cun 3889 ∩ cin 3890 ⊆ wss 3891 ∅c0 4261 {csn 4566 〈cop 4572 dom cdm 5588 ↾ cres 5590 Rel wrel 5593 Fn wfn 6425 ⟶wf 6426 (class class class)co 7268 ↑m cmap 8589 1c1 10856 + caddc 10858 ...cfz 13221 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1801 ax-4 1815 ax-5 1916 ax-6 1974 ax-7 2014 ax-8 2111 ax-9 2119 ax-10 2140 ax-11 2157 ax-12 2174 ax-ext 2710 ax-sep 5226 ax-nul 5233 ax-pow 5291 ax-pr 5355 ax-un 7579 ax-cnex 10911 ax-resscn 10912 ax-1cn 10913 ax-icn 10914 ax-addcl 10915 ax-addrcl 10916 ax-mulcl 10917 ax-mulrcl 10918 ax-mulcom 10919 ax-addass 10920 ax-mulass 10921 ax-distr 10922 ax-i2m1 10923 ax-1ne0 10924 ax-1rid 10925 ax-rnegex 10926 ax-rrecex 10927 ax-cnre 10928 ax-pre-lttri 10929 ax-pre-lttrn 10930 ax-pre-ltadd 10931 ax-pre-mulgt0 10932 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1544 df-fal 1554 df-ex 1786 df-nf 1790 df-sb 2071 df-mo 2541 df-eu 2570 df-clab 2717 df-cleq 2731 df-clel 2817 df-nfc 2890 df-ne 2945 df-nel 3051 df-ral 3070 df-rex 3071 df-reu 3072 df-rab 3074 df-v 3432 df-sbc 3720 df-csb 3837 df-dif 3894 df-un 3896 df-in 3898 df-ss 3908 df-nul 4262 df-if 4465 df-pw 4540 df-sn 4567 df-pr 4569 df-op 4573 df-uni 4845 df-iun 4931 df-br 5079 df-opab 5141 df-mpt 5162 df-id 5488 df-po 5502 df-so 5503 df-xp 5594 df-rel 5595 df-cnv 5596 df-co 5597 df-dm 5598 df-rn 5599 df-res 5600 df-ima 5601 df-iota 6388 df-fun 6432 df-fn 6433 df-f 6434 df-f1 6435 df-fo 6436 df-f1o 6437 df-fv 6438 df-riota 7225 df-ov 7271 df-oprab 7272 df-mpo 7273 df-1st 7817 df-2nd 7818 df-er 8472 df-map 8591 df-en 8708 df-dom 8709 df-sdom 8710 df-pnf 10995 df-mnf 10996 df-xr 10997 df-ltxr 10998 df-le 10999 df-sub 11190 df-neg 11191 df-z 12303 df-uz 12565 df-fz 13222 |
This theorem is referenced by: rexrabdioph 40596 |
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