Description: Define vector subtraction on a normed complex vector space. (Contributed by NM, 15-Feb-2008) (New usage is discouraged.)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | df-vs | |- -v = ( /g o. +v ) | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 0 | cnsb | |- -v | |
| 1 | cgs | |- /g | |
| 2 | cpv | |- +v | |
| 3 | 1 2 | ccom | |- ( /g o. +v ) | 
| 4 | 0 3 | wceq | |- -v = ( /g o. +v ) |