![]() |
Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
|
Mirrors > Home > MPE Home > Th. List > brco | Structured version Visualization version GIF version |
Description: Binary relation on a composition. (Contributed by NM, 21-Sep-2004.) (Revised by Mario Carneiro, 24-Feb-2015.) |
Ref | Expression |
---|---|
opelco.1 | ⊢ 𝐴 ∈ V |
opelco.2 | ⊢ 𝐵 ∈ V |
Ref | Expression |
---|---|
brco | ⊢ (𝐴(𝐶 ∘ 𝐷)𝐵 ↔ ∃𝑥(𝐴𝐷𝑥 ∧ 𝑥𝐶𝐵)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | opelco.1 | . 2 ⊢ 𝐴 ∈ V | |
2 | opelco.2 | . 2 ⊢ 𝐵 ∈ V | |
3 | brcog 5880 | . 2 ⊢ ((𝐴 ∈ V ∧ 𝐵 ∈ V) → (𝐴(𝐶 ∘ 𝐷)𝐵 ↔ ∃𝑥(𝐴𝐷𝑥 ∧ 𝑥𝐶𝐵))) | |
4 | 1, 2, 3 | mp2an 692 | 1 ⊢ (𝐴(𝐶 ∘ 𝐷)𝐵 ↔ ∃𝑥(𝐴𝐷𝑥 ∧ 𝑥𝐶𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 206 ∧ wa 395 ∃wex 1776 ∈ wcel 2106 Vcvv 3478 class class class wbr 5148 ∘ ccom 5693 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1908 ax-6 1965 ax-7 2005 ax-8 2108 ax-9 2116 ax-ext 2706 ax-sep 5302 ax-nul 5312 ax-pr 5438 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1540 df-fal 1550 df-ex 1777 df-sb 2063 df-clab 2713 df-cleq 2727 df-clel 2814 df-rab 3434 df-v 3480 df-dif 3966 df-un 3968 df-ss 3980 df-nul 4340 df-if 4532 df-sn 4632 df-pr 4634 df-op 4638 df-br 5149 df-opab 5211 df-co 5698 |
This theorem is referenced by: opelco 5885 cnvco 5899 cotrg 6130 cotrgOLD 6131 resco 6272 imaco 6273 rnco 6274 coass 6287 dfpo2 6318 dffv2 7004 foeqcnvco 7320 f1eqcocnv 7321 ttrclss 9758 rtrclreclem3 15096 imasleval 17588 ustuqtop4 24269 metustexhalf 24585 dftr6 35731 coep 35732 coepr 35733 brtxp 35862 pprodss4v 35866 brpprod 35867 sscoid 35895 elfuns 35897 brimg 35919 brapply 35920 brcup 35921 brcap 35922 brsuccf 35923 funpartlem 35924 brrestrict 35931 dfrecs2 35932 dfrdg4 35933 cnvssco 43596 |
Copyright terms: Public domain | W3C validator |