| Mathbox for Glauco Siliprandi |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > Mathboxes > dmmptif | Structured version Visualization version GIF version | ||
| Description: Domain of the mapping operation. (Contributed by Glauco Siliprandi, 21-Dec-2024.) |
| Ref | Expression |
|---|---|
| dmmptif.1 | ⊢ Ⅎ𝑥𝐴 |
| dmmptif.2 | ⊢ 𝐵 ∈ V |
| dmmptif.3 | ⊢ 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐵) |
| Ref | Expression |
|---|---|
| dmmptif | ⊢ dom 𝐹 = 𝐴 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dmmptif.1 | . . 3 ⊢ Ⅎ𝑥𝐴 | |
| 2 | dmmptif.2 | . . 3 ⊢ 𝐵 ∈ V | |
| 3 | dmmptif.3 | . . 3 ⊢ 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐵) | |
| 4 | 1, 2, 3 | fnmptif 46550 | . 2 ⊢ 𝐹 Fn 𝐴 |
| 5 | fndm 6672 | . 2 ⊢ (𝐹 Fn 𝐴 → dom 𝐹 = 𝐴) | |
| 6 | 4, 5 | ax-mp 5 | 1 ⊢ dom 𝐹 = 𝐴 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 ∈ wcel 2147 Ⅎwnfc 2911 Vcvv 3454 ↦ cmpt 5192 dom cdm 5658 Fn wfn 6561 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5255 ax-pr 5398 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ral 3081 df-rex 3091 df-rab 3417 df-v 3456 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-sn 4589 df-pr 4591 df-op 4841 df-br 5109 df-opab 5174 df-mpt 5193 df-id 5553 df-xp 5664 df-rel 5665 df-cnv 5666 df-co 5667 df-dm 5668 df-fun 6568 df-fn 6569 |
| This theorem is used by: adddmmbl2 48117 muldmmbl2 48119 smfdivdmmbl2 48124 |
| Copyright terms: Public domain | W3C validator |