Description: Addition with the zero vector. (Contributed by NM, 16-Aug-1999) (New usage is discouraged.)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | ax-hvaddid | |- ( A e. ~H -> ( A +h 0h ) = A ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 0 | cA | |- A |
|
| 1 | chba | |- ~H |
|
| 2 | 0 1 | wcel | |- A e. ~H |
| 3 | cva | |- +h |
|
| 4 | c0v | |- 0h |
|
| 5 | 0 4 3 | co | |- ( A +h 0h ) |
| 6 | 5 0 | wceq | |- ( A +h 0h ) = A |
| 7 | 2 6 | wi | |- ( A e. ~H -> ( A +h 0h ) = A ) |