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Mirrors > Home > MPE Home > Th. List > Mathboxes > dfdisjs4 | Structured version Visualization version GIF version |
Description: Alternate definition of the class of disjoints. (Contributed by Peter Mazsa, 5-Sep-2021.) |
Ref | Expression |
---|---|
dfdisjs4 | ⊢ Disjs = {𝑟 ∈ Rels ∣ ∀𝑥∃*𝑢 𝑢𝑟𝑥} |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dfdisjs2 35976 | . 2 ⊢ Disjs = {𝑟 ∈ Rels ∣ ≀ ◡𝑟 ⊆ I } | |
2 | cosscnvssid4 35751 | . 2 ⊢ ( ≀ ◡𝑟 ⊆ I ↔ ∀𝑥∃*𝑢 𝑢𝑟𝑥) | |
3 | 1, 2 | rabbieq 35546 | 1 ⊢ Disjs = {𝑟 ∈ Rels ∣ ∀𝑥∃*𝑢 𝑢𝑟𝑥} |
Colors of variables: wff setvar class |
Syntax hints: ∀wal 1534 = wceq 1536 ∃*wmo 2619 {crab 3141 ⊆ wss 3929 class class class wbr 5059 I cid 5452 ◡ccnv 5547 ≀ ccoss 35487 Rels crels 35489 Disjs cdisjs 35520 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1969 ax-7 2014 ax-8 2115 ax-9 2123 ax-10 2144 ax-11 2160 ax-12 2176 ax-ext 2792 ax-sep 5196 ax-nul 5203 ax-pow 5259 ax-pr 5323 ax-un 7454 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1084 df-tru 1539 df-ex 1780 df-nf 1784 df-sb 2069 df-mo 2621 df-eu 2653 df-clab 2799 df-cleq 2813 df-clel 2892 df-nfc 2962 df-ral 3142 df-rex 3143 df-rab 3146 df-v 3493 df-dif 3932 df-un 3934 df-in 3936 df-ss 3945 df-nul 4285 df-if 4461 df-pw 4534 df-sn 4561 df-pr 4563 df-op 4567 df-uni 4832 df-br 5060 df-opab 5122 df-id 5453 df-xp 5554 df-rel 5555 df-cnv 5556 df-co 5557 df-dm 5558 df-rn 5559 df-res 5560 df-coss 35693 df-rels 35759 df-ssr 35772 df-cnvrefs 35797 df-cnvrefrels 35798 df-disjss 35970 df-disjs 35971 |
This theorem is referenced by: (None) |
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