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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 6199 | . 2 ⊢ dom 𝐹 = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ V} |
| 3 | 2 | ssrab3 4023 | 1 ⊢ dom 𝐹 ⊆ 𝐴 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1542 ∈ wcel 2114 Vcvv 3430 ⊆ wss 3890 ↦ cmpt 5167 dom cdm 5625 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5232 ax-pr 5371 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-rab 3391 df-v 3432 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4275 df-if 4468 df-sn 4569 df-pr 4571 df-op 4575 df-br 5087 df-opab 5149 df-mpt 5168 df-xp 5631 df-rel 5632 df-cnv 5633 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 |
| This theorem is referenced by: mptrcl 6952 fvmptss 6955 fvmptex 6957 fvmptnf 6965 elfvmptrab1w 6970 elfvmptrab1 6971 mptexg 7170 mptexw 7900 dmmpossx 8013 tposssxp 8174 mptfi 9255 cnvimamptfin 9257 cantnfres 9592 mptct 10454 arwrcl 18005 submgmrcl 18657 cntzrcl 19296 gsumconst 19903 psrass1lem 21925 psrass1 21955 psrass23l 21958 psrcom 21959 psrass23 21960 mpfrcl 22076 psropprmul 22214 coe1mul2 22247 lmrcl 23209 1stcrestlem 23430 ptbasfi 23559 isxms2 24426 setsmstopn 24456 tngtopn 24628 rrxmval 25385 ulmss 26378 dchrrcl 27220 gsummpt2co 33127 locfinreflem 34003 sitgclg 34505 cvmsrcl 35465 snmlval 35532 gonan0 35593 bj-fvmptunsn1 37590 eldiophb 43206 elmnc 43585 itgocn 43613 tannpoly 47353 dmmpossx2 48828 dmtposss 49366 |
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