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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 6196 | . 2 ⊢ dom 𝐹 = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} |
| 3 | 2 | ssrab3 4032 | 1 ⊢ dom 𝐹 ⊆ 𝐴 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1541 ∈ wcel 2113 Vcvv 3438 ⊆ wss 3899 ↦ cmpt 5177 dom cdm 5622 |
| 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 2182 ax-ext 2706 ax-sep 5239 ax-nul 5249 ax-pr 5375 |
| 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 2537 df-eu 2567 df-clab 2713 df-cleq 2726 df-clel 2809 df-nfc 2883 df-rab 3398 df-v 3440 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4284 df-if 4478 df-sn 4579 df-pr 4581 df-op 4585 df-br 5097 df-opab 5159 df-mpt 5178 df-xp 5628 df-rel 5629 df-cnv 5630 df-dm 5632 df-rn 5633 df-res 5634 df-ima 5635 |
| This theorem is referenced by: mptrcl 6948 fvmptss 6951 fvmptex 6953 fvmptnf 6961 elfvmptrab1w 6966 elfvmptrab1 6967 mptexg 7165 mptexw 7895 dmmpossx 8008 tposssxp 8170 mptfi 9249 cnvimamptfin 9251 cantnfres 9584 mptct 10446 arwrcl 17966 submgmrcl 18618 cntzrcl 19254 gsumconst 19861 psrass1lem 21886 psrass1 21917 psrass23l 21920 psrcom 21921 psrass23 21922 mpfrcl 22038 psropprmul 22176 coe1mul2 22209 lmrcl 23173 1stcrestlem 23394 ptbasfi 23523 isxms2 24390 setsmstopn 24420 tngtopn 24592 rrxmval 25359 ulmss 26360 dchrrcl 27205 gsummpt2co 33080 locfinreflem 33946 sitgclg 34448 cvmsrcl 35407 snmlval 35474 gonan0 35535 bj-fvmptunsn1 37401 eldiophb 42941 elmnc 43320 itgocn 43348 tannpoly 47078 dmmpossx2 48525 dmtposss 49063 |
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