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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 6198 | . 2 ⊢ dom 𝐹 = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} |
| 3 | 2 | ssrab3 4034 | 1 ⊢ dom 𝐹 ⊆ 𝐴 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1541 ∈ wcel 2113 Vcvv 3440 ⊆ wss 3901 ↦ cmpt 5179 dom cdm 5624 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2184 ax-ext 2708 ax-sep 5241 ax-nul 5251 ax-pr 5377 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-rab 3400 df-v 3442 df-dif 3904 df-un 3906 df-in 3908 df-ss 3918 df-nul 4286 df-if 4480 df-sn 4581 df-pr 4583 df-op 4587 df-br 5099 df-opab 5161 df-mpt 5180 df-xp 5630 df-rel 5631 df-cnv 5632 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 |
| This theorem is referenced by: mptrcl 6950 fvmptss 6953 fvmptex 6955 fvmptnf 6963 elfvmptrab1w 6968 elfvmptrab1 6969 mptexg 7167 mptexw 7897 dmmpossx 8010 tposssxp 8172 mptfi 9251 cnvimamptfin 9253 cantnfres 9586 mptct 10448 arwrcl 17968 submgmrcl 18620 cntzrcl 19256 gsumconst 19863 psrass1lem 21888 psrass1 21919 psrass23l 21922 psrcom 21923 psrass23 21924 mpfrcl 22040 psropprmul 22178 coe1mul2 22211 lmrcl 23175 1stcrestlem 23396 ptbasfi 23525 isxms2 24392 setsmstopn 24422 tngtopn 24594 rrxmval 25361 ulmss 26362 dchrrcl 27207 gsummpt2co 33131 locfinreflem 33997 sitgclg 34499 cvmsrcl 35458 snmlval 35525 gonan0 35586 bj-fvmptunsn1 37462 eldiophb 42999 elmnc 43378 itgocn 43406 tannpoly 47136 dmmpossx2 48583 dmtposss 49121 |
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