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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 5547 | . 2 ⊢ dom 𝐹 = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} |
3 | ssrab2 3650 | . 2 ⊢ {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} ⊆ 𝐴 | |
4 | 2, 3 | eqsstri 3598 | 1 ⊢ dom 𝐹 ⊆ 𝐴 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1475 ∈ wcel 1977 {crab 2900 Vcvv 3173 ⊆ wss 3540 ↦ cmpt 4643 dom cdm 5038 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-sep 4709 ax-nul 4717 ax-pr 4833 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ral 2901 df-rab 2905 df-v 3175 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-nul 3875 df-if 4037 df-sn 4126 df-pr 4128 df-op 4132 df-br 4584 df-opab 4644 df-mpt 4645 df-xp 5044 df-rel 5045 df-cnv 5046 df-dm 5048 df-rn 5049 df-res 5050 df-ima 5051 |
This theorem is referenced by: mptrcl 6198 fvmptss 6201 fvmptex 6203 fvmptnf 6210 elfvmptrab1 6213 mptexg 6389 dmmpt2ssx 7124 curry1val 7157 curry2val 7161 tposssxp 7243 mptfi 8148 cnvimamptfin 8150 cantnfres 8457 bitsval 14984 subcrcl 16299 arwval 16516 arwrcl 16517 coafval 16537 submrcl 17169 issubg 17417 isnsg 17446 cntzrcl 17583 gsumconst 18157 abvrcl 18644 psrass1lem 19198 psrass1 19226 psrass23l 19229 psrcom 19230 psrass23 19231 mpfrcl 19339 psropprmul 19429 coe1mul2 19460 isobs 19883 lmrcl 20845 1stcrestlem 21065 islocfin 21130 kgeni 21150 ptbasfi 21194 isxms2 22063 setsmstopn 22093 tngtopn 22264 isphtpc 22601 pcofval 22618 cfili 22874 cfilfcls 22880 rrxmval 22996 plybss 23754 ulmss 23955 dchrrcl 24765 mptct 28880 gsummpt2co 29111 locfinreflem 29235 sitgclg 29731 cvmsrcl 30500 snmlval 30567 eldiophb 36338 elmnc 36725 itgocn 36753 issdrg 36786 submgmrcl 41572 dmmpt2ssx2 41908 |
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