Description: The starting point of a path concatenation. (Contributed by Jeff Madsen, 15-Jun-2010)
Ref | Expression | ||
---|---|---|---|
Hypotheses | pcoval.2 | |
|
pcoval.3 | |
||
Assertion | pco0 | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | pcoval.2 | |
|
2 | pcoval.3 | |
|
3 | 0re | |
|
4 | 0le0 | |
|
5 | halfge0 | |
|
6 | halfre | |
|
7 | 3 6 | elicc2i | |
8 | 3 4 5 7 | mpbir3an | |
9 | 1 2 | pcoval1 | |
10 | 8 9 | mpan2 | |
11 | 2t0e0 | |
|
12 | 11 | fveq2i | |
13 | 10 12 | eqtrdi | |