Description: Inner product with the 0 vector. (Contributed by NM, 13-Oct-1999) (New usage is discouraged.)
Ref | Expression | ||
---|---|---|---|
Assertion | hi02 | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ax-hv0cl | |
|
2 | ax-his1 | |
|
3 | 1 2 | mpan2 | |
4 | hi01 | |
|
5 | 4 | fveq2d | |
6 | cj0 | |
|
7 | 5 6 | eqtrdi | |
8 | 3 7 | eqtrd | |