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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 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 0 | cnsb | ||
| 1 | cgs | ||
| 2 | cpv | ||
| 3 | 1 2 | ccom | |
| 4 | 0 3 | wceq |