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Mirrors > Home > MPE Home > Th. List > coemptyd | Structured version Visualization version GIF version |
Description: Deduction about composition of classes with no relational content in common. (Contributed by RP, 24-Dec-2019.) |
Ref | Expression |
---|---|
coemptyd.1 | ⊢ (𝜑 → (dom 𝐴 ∩ ran 𝐵) = ∅) |
Ref | Expression |
---|---|
coemptyd | ⊢ (𝜑 → (𝐴 ∘ 𝐵) = ∅) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | coemptyd.1 | . 2 ⊢ (𝜑 → (dom 𝐴 ∩ ran 𝐵) = ∅) | |
2 | coeq0 6207 | . 2 ⊢ ((𝐴 ∘ 𝐵) = ∅ ↔ (dom 𝐴 ∩ ran 𝐵) = ∅) | |
3 | 1, 2 | sylibr 233 | 1 ⊢ (𝜑 → (𝐴 ∘ 𝐵) = ∅) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1541 ∩ cin 3909 ∅c0 4282 dom cdm 5633 ran crn 5634 ∘ ccom 5637 |
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 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2707 ax-sep 5256 ax-nul 5263 ax-pr 5384 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-clab 2714 df-cleq 2728 df-clel 2814 df-ral 3065 df-rex 3074 df-rab 3408 df-v 3447 df-dif 3913 df-un 3915 df-in 3917 df-ss 3927 df-nul 4283 df-if 4487 df-sn 4587 df-pr 4589 df-op 4593 df-br 5106 df-opab 5168 df-xp 5639 df-rel 5640 df-cnv 5641 df-co 5642 df-dm 5643 df-rn 5644 df-res 5645 |
This theorem is referenced by: xptrrel 14864 cosnopne 31553 coeq0i 41053 conrel1d 41916 conrel2d 41917 clsneibex 42355 neicvgbex 42365 |
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