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Description: Subspace span of union is a subset of subspace join. (Contributed by NM, 6-Aug-2014)
| Ref | Expression | ||
|---|---|---|---|
| Hypotheses | djhspss.h | ||
| djhspss.u | |||
| djhspss.v | |||
| djhspss.n | |||
| djhspss.j | |||
| djhspss.k | |||
| djhspss.x | |||
| djhspss.y | |||
| Assertion | djhspss |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | djhspss.h | ||
| 2 | djhspss.u | ||
| 3 | djhspss.v | ||
| 4 | djhspss.n | ||
| 5 | djhspss.j | ||
| 6 | djhspss.k | ||
| 7 | djhspss.x | ||
| 8 | djhspss.y | ||
| 9 | eqid | ||
| 10 | 7 8 | unssd | |
| 11 | 1 2 9 3 4 6 10 | dochspss | |
| 12 | 1 2 3 9 5 | djhval2 | |
| 13 | 6 7 8 12 | syl3anc | |
| 14 | 11 13 | sseqtrrd |