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| Mirrors > Home > MPE Home > Th. List > fmptssfisupp | Structured version Visualization version GIF version | ||
| Description: The restriction of a mapping function has finite support if that function has finite support. (Contributed by Thierry Arnoux, 21-Jan-2024.) |
| Ref | Expression |
|---|---|
| fmptssfisupp.1 | ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝐵) finSupp 𝑍) |
| fmptssfisupp.2 | ⊢ (𝜑 → 𝐶 ⊆ 𝐴) |
| fmptssfisupp.3 | ⊢ (𝜑 → 𝑍 ∈ 𝑉) |
| Ref | Expression |
|---|---|
| fmptssfisupp | ⊢ (𝜑 → (𝑥 ∈ 𝐶 ↦ 𝐵) finSupp 𝑍) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fmptssfisupp.2 | . . 3 ⊢ (𝜑 → 𝐶 ⊆ 𝐴) | |
| 2 | 1 | resmptd 6040 | . 2 ⊢ (𝜑 → ((𝑥 ∈ 𝐴 ↦ 𝐵) ↾ 𝐶) = (𝑥 ∈ 𝐶 ↦ 𝐵)) |
| 3 | fmptssfisupp.1 | . . 3 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝐵) finSupp 𝑍) | |
| 4 | fmptssfisupp.3 | . . 3 ⊢ (𝜑 → 𝑍 ∈ 𝑉) | |
| 5 | 3, 4 | fsuppres 9366 | . 2 ⊢ (𝜑 → ((𝑥 ∈ 𝐴 ↦ 𝐵) ↾ 𝐶) finSupp 𝑍) |
| 6 | 2, 5 | eqbrtrrd 5133 | 1 ⊢ (𝜑 → (𝑥 ∈ 𝐶 ↦ 𝐵) finSupp 𝑍) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2145 ⊆ wss 3902 class class class wbr 5107 ↦ cmpt 5190 ↾ cres 5661 finSupp cfsupp 9334 |
| 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-pr 5402 ax-un 7739 |
| 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-ral 3079 df-rex 3089 df-reu 3368 df-rab 3415 df-v 3455 df-sbc 3743 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-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-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-ov 7419 df-oprab 7420 df-mpo 7421 df-om 7866 df-supp 8162 df-1o 8458 df-en 8956 df-fin 8959 df-fsupp 9335 |
| This theorem is used by: selvvvval 22359 psdmul 22395 elrgspnsubrunlem2 33675 mplvrpmrhm 34044 |
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