Description: The law of concretion for a binary relation. (Contributed by NM, 16-Aug-1999)
Ref | Expression | ||
---|---|---|---|
Hypotheses | opelopab.1 | |
|
opelopab.2 | |
||
opelopab.3 | |
||
opelopab.4 | |
||
brab.5 | |
||
Assertion | brab | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | opelopab.1 | |
|
2 | opelopab.2 | |
|
3 | opelopab.3 | |
|
4 | opelopab.4 | |
|
5 | brab.5 | |
|
6 | 3 4 5 | brabg | |
7 | 1 2 6 | mp2an | |