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| Mirrors > Home > ILE Home > Th. List > ordtr1 | GIF version | ||
| Description: Transitive law for ordinal classes. (Contributed by NM, 12-Dec-2004.) |
| Ref | Expression |
|---|---|
| ordtr1 | ⊢ (Ord 𝐶 → ((𝐴 ∈ 𝐵 ∧ 𝐵 ∈ 𝐶) → 𝐴 ∈ 𝐶)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ordtr 4473 | . 2 ⊢ (Ord 𝐶 → Tr 𝐶) | |
| 2 | trel 4192 | . 2 ⊢ (Tr 𝐶 → ((𝐴 ∈ 𝐵 ∧ 𝐵 ∈ 𝐶) → 𝐴 ∈ 𝐶)) | |
| 3 | 1, 2 | syl 14 | 1 ⊢ (Ord 𝐶 → ((𝐴 ∈ 𝐵 ∧ 𝐵 ∈ 𝐶) → 𝐴 ∈ 𝐶)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ∈ wcel 2200 Tr wtr 4185 Ord word 4457 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-ext 2211 |
| This theorem depends on definitions: df-bi 117 df-tru 1398 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-v 2802 df-in 3204 df-ss 3211 df-uni 3892 df-tr 4186 df-iord 4461 |
| This theorem is referenced by: ontr1 4484 ordwe 4672 dfsmo2 6448 smores2 6455 smoel 6461 tfr1onlemsucaccv 6502 tfr1onlembxssdm 6504 tfr1onlembfn 6505 tfr1onlemaccex 6509 tfr1onlemres 6510 tfrcllemsucaccv 6515 tfrcllembxssdm 6517 tfrcllembfn 6518 tfrcllemaccex 6522 tfrcllemres 6523 tfrcl 6525 ordiso2 7225 |
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