Description: Closure of ring multiplication for a subcomplex module. (Contributed by Mario Carneiro, 16-Oct-2015)
Ref | Expression | ||
---|---|---|---|
Hypotheses | clm0.f | ||
clmsub.k | |||
Assertion | clmmcl |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | clm0.f | ||
2 | clmsub.k | ||
3 | 1 2 | clmsubrg | |
4 | cnfldmul | ||
5 | 4 | subrgmcl | |
6 | 3 5 | syl3an1 |