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Mirrors > Home > MPE Home > Th. List > brstruct | Structured version Visualization version GIF version |
Description: The structure relation is a relation. (Contributed by Mario Carneiro, 29-Aug-2015.) |
Ref | Expression |
---|---|
brstruct | ⊢ Rel Struct |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-struct 16477 | . 2 ⊢ Struct = {〈𝑓, 𝑥〉 ∣ (𝑥 ∈ ( ≤ ∩ (ℕ × ℕ)) ∧ Fun (𝑓 ∖ {∅}) ∧ dom 𝑓 ⊆ (...‘𝑥))} | |
2 | 1 | relopabi 5658 | 1 ⊢ Rel Struct |
Colors of variables: wff setvar class |
Syntax hints: ∧ w3a 1084 ∈ wcel 2111 ∖ cdif 3878 ∩ cin 3880 ⊆ wss 3881 ∅c0 4243 {csn 4525 × cxp 5517 dom cdm 5519 Rel wrel 5524 Fun wfun 6318 ‘cfv 6324 ≤ cle 10665 ℕcn 11625 ...cfz 12885 Struct cstr 16471 |
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-11 2158 ax-12 2175 ax-ext 2770 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3an 1086 df-tru 1541 df-ex 1782 df-sb 2070 df-clab 2777 df-cleq 2791 df-clel 2870 df-v 3443 df-un 3886 df-in 3888 df-ss 3898 df-sn 4526 df-pr 4528 df-op 4532 df-opab 5093 df-xp 5525 df-rel 5526 df-struct 16477 |
This theorem is referenced by: isstruct2 16485 structex 16486 |
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