Description: A subspace sum contains a member of one of its subspaces. (Contributed by NM, 19-Oct-1999) (New usage is discouraged.)
Ref | Expression | ||
---|---|---|---|
Hypotheses | shincl.1 | |
|
shincl.2 | |
||
Assertion | shsel2i | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | shincl.1 | |
|
2 | shincl.2 | |
|
3 | shsel2 | |
|
4 | 1 2 3 | mp2an | |