| 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 46040 | . 2 ⊢ 𝐹 Fn 𝐴 |
| 5 | fndm 6642 | . 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 2146 Ⅎwnfc 2912 Vcvv 3457 ↦ cmpt 5194 dom cdm 5663 Fn wfn 6535 |
| 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 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 ax-sep 5259 ax-pr 5406 |
| 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 2100 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ral 3082 df-rex 3092 df-rab 3419 df-v 3459 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4287 df-if 4490 df-sn 4592 df-pr 4594 df-op 4598 df-br 5112 df-opab 5176 df-mpt 5195 df-id 5558 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-fun 6542 df-fn 6543 |
| This theorem is used by: adddmmbl2 47608 muldmmbl2 47610 smfdivdmmbl2 47615 |
| Copyright terms: Public domain | W3C validator |