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| Mirrors > Home > MPE Home > Th. List > ordtr1 | Structured version Visualization version 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 6378 | . 2 ⊢ (Ord 𝐶 → Tr 𝐶) | |
| 2 | trel 5228 | . 2 ⊢ (Tr 𝐶 → ((𝐴 ∈ 𝐵 ∧ 𝐵 ∈ 𝐶) → 𝐴 ∈ 𝐶)) | |
| 3 | 1, 2 | syl 18 | 1 ⊢ (Ord 𝐶 → ((𝐴 ∈ 𝐵 ∧ 𝐵 ∈ 𝐶) → 𝐴 ∈ 𝐶)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ∈ wcel 2146 Tr wtr 5220 Ord word 6363 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-ext 2737 |
| This proof depends on definitions: df-bi 210 df-an 402 df-tru 1573 df-ex 1813 df-sb 2100 df-clab 2744 df-cleq 2757 df-clel 2840 df-v 3459 df-ss 3923 df-uni 4875 df-tr 5221 df-ord 6367 |
| This theorem is used by: ontr1 6412 dfsmo2 8340 smores2 8347 smoel 8353 smogt 8360 ordiso2 9484 r1ordg 9757 r1pwss 9763 r1val1 9765 rankr1ai 9777 rankval3b 9805 rankonidlem 9807 onssr1 9810 cofsmo 10268 fpwwe2lem8 10640 nosepssdm 27903 bnj1098 35239 bnj594 35367 rankfilimb 35556 r1filimi 35557 |
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