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Mirrors > Home > MPE Home > Th. List > 0trrel | Structured version Visualization version GIF version |
Description: The empty class is a transitive relation. (Contributed by RP, 24-Dec-2019.) |
Ref | Expression |
---|---|
0trrel | ⊢ (∅ ∘ ∅) ⊆ ∅ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | co01 6081 | . 2 ⊢ (∅ ∘ ∅) = ∅ | |
2 | 1 | eqimssi 3973 | 1 ⊢ (∅ ∘ ∅) ⊆ ∅ |
Colors of variables: wff setvar class |
Syntax hints: ⊆ wss 3881 ∅c0 4243 ∘ ccom 5523 |
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 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-sep 5167 ax-nul 5174 ax-pr 5295 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2598 df-eu 2629 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-v 3443 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-nul 4244 df-if 4426 df-sn 4526 df-pr 4528 df-op 4532 df-br 5031 df-opab 5093 df-xp 5525 df-rel 5526 df-cnv 5527 df-co 5528 |
This theorem is referenced by: trclfvcotrg 14367 ust0 22825 |
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