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| Mirrors > Home > MPE Home > Th. List > cottrcl | Structured version Visualization version GIF version | ||
| Description: Composition law for the transitive closure of a relation. (Contributed by Scott Fenton, 20-Oct-2024.) |
| Ref | Expression |
|---|---|
| cottrcl | ⊢ (𝑅 ∘ t++𝑅) ⊆ t++𝑅 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | relres 6003 | . . . . 5 ⊢ Rel (𝑅 ↾ V) | |
| 2 | ssttrcl 9682 | . . . . 5 ⊢ (Rel (𝑅 ↾ V) → (𝑅 ↾ V) ⊆ t++(𝑅 ↾ V)) | |
| 3 | 1, 2 | ax-mp 5 | . . . 4 ⊢ (𝑅 ↾ V) ⊆ t++(𝑅 ↾ V) |
| 4 | coss1 5840 | . . . 4 ⊢ ((𝑅 ↾ V) ⊆ t++(𝑅 ↾ V) → ((𝑅 ↾ V) ∘ t++(𝑅 ↾ V)) ⊆ (t++(𝑅 ↾ V) ∘ t++(𝑅 ↾ V))) | |
| 5 | 3, 4 | ax-mp 5 | . . 3 ⊢ ((𝑅 ↾ V) ∘ t++(𝑅 ↾ V)) ⊆ (t++(𝑅 ↾ V) ∘ t++(𝑅 ↾ V)) |
| 6 | ttrcltr 9683 | . . 3 ⊢ (t++(𝑅 ↾ V) ∘ t++(𝑅 ↾ V)) ⊆ t++(𝑅 ↾ V) | |
| 7 | 5, 6 | sstri 3945 | . 2 ⊢ ((𝑅 ↾ V) ∘ t++(𝑅 ↾ V)) ⊆ t++(𝑅 ↾ V) |
| 8 | ssv 3960 | . . . 4 ⊢ ran t++(𝑅 ↾ V) ⊆ V | |
| 9 | cores 6249 | . . . 4 ⊢ (ran t++(𝑅 ↾ V) ⊆ V → ((𝑅 ↾ V) ∘ t++(𝑅 ↾ V)) = (𝑅 ∘ t++(𝑅 ↾ V))) | |
| 10 | 8, 9 | ax-mp 5 | . . 3 ⊢ ((𝑅 ↾ V) ∘ t++(𝑅 ↾ V)) = (𝑅 ∘ t++(𝑅 ↾ V)) |
| 11 | ttrclresv 9684 | . . . 4 ⊢ t++(𝑅 ↾ V) = t++𝑅 | |
| 12 | 11 | coeq2i 5845 | . . 3 ⊢ (𝑅 ∘ t++(𝑅 ↾ V)) = (𝑅 ∘ t++𝑅) |
| 13 | 10, 12 | eqtri 2785 | . 2 ⊢ ((𝑅 ↾ V) ∘ t++(𝑅 ↾ V)) = (𝑅 ∘ t++𝑅) |
| 14 | 7, 13, 11 | 3sstr3i 3986 | 1 ⊢ (𝑅 ∘ t++𝑅) ⊆ t++𝑅 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1569 Vcvv 3454 ⊆ wss 3904 ran crn 5661 ↾ cres 5662 ∘ ccom 5664 Rel wrel 5665 t++cttrcl 9674 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1824 ax-4 1838 ax-5 1939 ax-6 1996 ax-7 2037 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-rep 5237 ax-sep 5256 ax-nul 5268 ax-pr 5403 ax-un 7734 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1103 df-3an 1104 df-tru 1572 df-fal 1582 df-ex 1809 df-nf 1813 df-sb 2096 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-ral 3079 df-rex 3089 df-rmo 3368 df-reu 3369 df-rab 3416 df-v 3456 df-sbc 3744 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4487 df-pw 4563 df-sn 4589 df-pr 4591 df-op 4595 df-uni 4872 df-int 4912 df-iun 4957 df-br 5109 df-opab 5173 df-mpt 5192 df-tr 5218 df-id 5555 df-eprel 5560 df-po 5568 df-so 5569 df-fr 5613 df-we 5615 df-xp 5666 df-rel 5667 df-cnv 5668 df-co 5669 df-dm 5670 df-rn 5671 df-res 5672 df-ima 5673 df-pred 6302 df-ord 6363 df-on 6364 df-lim 6365 df-suc 6366 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7861 df-2nd 7985 df-frecs 8276 df-wrecs 8307 df-recs 8356 df-rdg 8395 df-1o 8451 df-oadd 8455 df-ttrcl 9675 |
| This theorem is used by: (None) |
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