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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 6191 | . 2 ⊢ dom 𝐹 = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} |
| 3 | 2 | ssrab3 4013 | 1 ⊢ dom 𝐹 ⊆ 𝐴 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1547 ∈ wcel 2119 Vcvv 3431 ⊆ wss 3883 ↦ cmpt 5153 dom cdm 5618 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2711 ax-sep 5218 ax-pr 5362 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2718 df-cleq 2731 df-clel 2814 df-nfc 2888 df-rab 3392 df-v 3433 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4262 df-if 4455 df-sn 4556 df-pr 4558 df-op 4562 df-br 5073 df-opab 5135 df-mpt 5154 df-xp 5624 df-rel 5625 df-cnv 5626 df-dm 5628 df-rn 5629 df-res 5630 df-ima 5631 |
| This theorem is referenced by: mptrcl 6945 fvmptss 6948 fvmptex 6950 fvmptnf 6958 elfvmptrab1w 6963 elfvmptrab1 6964 mptexg 7165 mptexw 7895 dmmpossx 8008 tposssxp 8170 mptfi 9251 cnvimamptfin 9253 cantnfres 9589 mptct 10451 arwrcl 18002 submgmrcl 18654 cntzrcl 19293 gsumconst 19900 psrass1lem 21908 psrass1 21938 psrass23l 21941 psrcom 21942 psrass23 21943 mpfrcl 22061 psropprmul 22222 coe1mul2 22255 lmrcl 23214 1stcrestlem 23435 ptbasfi 23564 isxms2 24431 setsmstopn 24461 tngtopn 24633 rrxmval 25390 ulmss 26380 dchrrcl 27221 gsummpt2co 33129 locfinreflem 34024 sitgclg 34526 cvmsrcl 35492 snmlval 35559 gonan0 35620 bj-fvmptunsn1 37617 eldiophb 43206 elmnc 43581 itgocn 43609 tannpoly 47353 dmmpossx2 48828 dmtposss 49366 |
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