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Mirrors > Home > MPE Home > Th. List > snopsuppss | Structured version Visualization version GIF version |
Description: The support of a singleton containing an ordered pair is a subset of the singleton containing the first element of the ordered pair, i.e. it is empty or the singleton itself. (Contributed by AV, 19-Jul-2019.) |
Ref | Expression |
---|---|
snopsuppss | ⊢ ({〈𝑋, 𝑌〉} supp 𝑍) ⊆ {𝑋} |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | suppssdm 8200 | . 2 ⊢ ({〈𝑋, 𝑌〉} supp 𝑍) ⊆ dom {〈𝑋, 𝑌〉} | |
2 | dmsnopss 6235 | . 2 ⊢ dom {〈𝑋, 𝑌〉} ⊆ {𝑋} | |
3 | 1, 2 | sstri 4004 | 1 ⊢ ({〈𝑋, 𝑌〉} supp 𝑍) ⊆ {𝑋} |
Colors of variables: wff setvar class |
Syntax hints: ⊆ wss 3962 {csn 4630 〈cop 4636 dom cdm 5688 (class class class)co 7430 supp csupp 8183 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1791 ax-4 1805 ax-5 1907 ax-6 1964 ax-7 2004 ax-8 2107 ax-9 2115 ax-10 2138 ax-11 2154 ax-12 2174 ax-ext 2705 ax-sep 5301 ax-nul 5311 ax-pr 5437 ax-un 7753 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1539 df-fal 1549 df-ex 1776 df-nf 1780 df-sb 2062 df-mo 2537 df-eu 2566 df-clab 2712 df-cleq 2726 df-clel 2813 df-nfc 2889 df-ne 2938 df-ral 3059 df-rex 3068 df-rab 3433 df-v 3479 df-sbc 3791 df-dif 3965 df-un 3967 df-in 3969 df-ss 3979 df-nul 4339 df-if 4531 df-pw 4606 df-sn 4631 df-pr 4633 df-op 4637 df-uni 4912 df-br 5148 df-opab 5210 df-id 5582 df-xp 5694 df-rel 5695 df-cnv 5696 df-co 5697 df-dm 5698 df-rn 5699 df-res 5700 df-ima 5701 df-iota 6515 df-fun 6564 df-fv 6570 df-ov 7433 df-oprab 7434 df-mpo 7435 df-supp 8184 |
This theorem is referenced by: snopfsupp 9428 |
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