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| Mirrors > Home > MPE Home > Th. List > trclfvg | Structured version Visualization version GIF version | ||
| Description: The value of the transitive closure of a relation is a superset or (for proper classes) the empty set. (Contributed by RP, 8-May-2020.) |
| Ref | Expression |
|---|---|
| trclfvg | ⊢ (𝑅 ⊆ (t+‘𝑅) ∨ (t+‘𝑅) = ∅) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | exmid 907 | . 2 ⊢ (𝑅 ∈ V ∨ ¬ 𝑅 ∈ V) | |
| 2 | trclfvlb 15033 | . . 3 ⊢ (𝑅 ∈ V → 𝑅 ⊆ (t+‘𝑅)) | |
| 3 | fvprc 6863 | . . 3 ⊢ (¬ 𝑅 ∈ V → (t+‘𝑅) = ∅) | |
| 4 | 2, 3 | orim12i 921 | . 2 ⊢ ((𝑅 ∈ V ∨ ¬ 𝑅 ∈ V) → (𝑅 ⊆ (t+‘𝑅) ∨ (t+‘𝑅) = ∅)) |
| 5 | 1, 4 | ax-mp 5 | 1 ⊢ (𝑅 ⊆ (t+‘𝑅) ∨ (t+‘𝑅) = ∅) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 ∨ wo 860 = wceq 1563 ∈ wcel 2145 Vcvv 3457 ⊆ wss 3907 ∅c0 4288 ‘cfv 6525 t+ctcl 15010 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2737 ax-sep 5250 ax-nul 5260 ax-pow 5326 ax-pr 5394 ax-un 7722 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1566 df-fal 1576 df-ex 1803 df-nf 1807 df-sb 2094 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-ral 3080 df-rex 3090 df-rab 3418 df-v 3459 df-dif 3910 df-un 3912 df-in 3914 df-ss 3924 df-nul 4289 df-if 4484 df-pw 4560 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4868 df-int 4908 df-br 5105 df-opab 5167 df-mpt 5186 df-id 5546 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-iota 6481 df-fun 6527 df-fv 6533 df-trcl 15012 |
| This theorem is referenced by: (None) |
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