Description: Any ring can be regarded as a left algebra over itself. The function ringLMod associates with any ring the left algebra consisting in the ring itself regarded as a left algebra over itself. It has an inner product which is simply the ring product. (Contributed by Stefan O'Rear, 6-Dec-2014)
Ref | Expression | ||
---|---|---|---|
Assertion | df-rgmod | |- ringLMod = ( w e. _V |-> ( ( subringAlg ` w ) ` ( Base ` w ) ) ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
0 | crglmod | |- ringLMod |
|
1 | vw | |- w |
|
2 | cvv | |- _V |
|
3 | csra | |- subringAlg |
|
4 | 1 | cv | |- w |
5 | 4 3 | cfv | |- ( subringAlg ` w ) |
6 | cbs | |- Base |
|
7 | 4 6 | cfv | |- ( Base ` w ) |
8 | 7 5 | cfv | |- ( ( subringAlg ` w ) ` ( Base ` w ) ) |
9 | 1 2 8 | cmpt | |- ( w e. _V |-> ( ( subringAlg ` w ) ` ( Base ` w ) ) ) |
10 | 0 9 | wceq | |- ringLMod = ( w e. _V |-> ( ( subringAlg ` w ) ` ( Base ` w ) ) ) |