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| Mirrors > Home > MPE Home > Th. List > dmmptss | Structured version Visualization version GIF version | ||
| Description: The domain of a mapping is a subset of its base class. (Contributed by Scott Fenton, 17-Jun-2013.) |
| Ref | Expression |
|---|---|
| dmmpt.1 | ⊢ 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐵) |
| Ref | Expression |
|---|---|
| dmmptss | ⊢ dom 𝐹 ⊆ 𝐴 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dmmpt.1 | . . 3 ⊢ 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐵) | |
| 2 | 1 | dmmpt 6243 | . 2 ⊢ dom 𝐹 = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} |
| 3 | 2 | ssrab3 4037 | 1 ⊢ dom 𝐹 ⊆ 𝐴 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 ∈ wcel 2146 Vcvv 3457 ⊆ wss 3906 ↦ cmpt 5194 dom cdm 5663 |
| 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-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-xp 5669 df-rel 5670 df-cnv 5671 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 |
| This theorem is used by: mptrcl 7003 fvmptss 7006 fvmptex 7008 fvmptnf 7016 elfvmptrab1w 7021 elfvmptrab1 7022 mptexg 7226 mptexw 7956 dmmpossx 8069 tposssxp 8232 mptfi 9315 cnvimamptfin 9317 cantnfres 9653 mptct 10539 arwrcl 18125 submgmrcl 18787 cntzrcl 19443 gsumconst 20050 psrass1lem 22135 psrass1 22165 psrass23l 22168 psrcom 22169 psrass23 22170 mpfrcl 22288 psropprmul 22449 coe1mul2 22482 lmrcl 23440 1stcrestlem 23661 ptbasfi 23791 isxms2 24658 setsmstopn 24688 tngtopn 24860 rrxmval 25617 ulmss 26613 dchrrcl 27457 gsummpt2co 33434 locfinreflem 34296 sitgclg 34799 cvmsrcl 35795 snmlval 35862 gonan0 35923 bj-fvmptunsn1 37960 eldiophb 43548 elmnc 43923 itgocn 43951 tannpoly 47687 dmmpossx2 49176 dmtposss 49713 |
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