Activity for peterhâ€
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Comment | Post #294117 |
O.k, then only in the invertible tensors. For $Lin(U,V)$ I think it might mean probably a group of the linear operations (?), but the upper/lower indexes were above me. What if we consider the tensor as an n-dimensional number array? What I see here, they really do not group. As I see it, the multipl... (more) |
— | 6 days ago |
| Edit | Post #294117 |
Post edited: |
— | 6 days ago |
| Edit | Post #294117 |
Post edited: |
— | 6 days ago |
| Edit | Post #294117 | Initial revision | — | 7 days ago |
| Question | — |
What is the unit element in the space of more-than-2 indexed tensors? For the 2-index tensors, we have the unit matrix, or eye matrix ($M{ab}=\delta{ab}$). What is the case for more index tensors? Group operation would be that we consider the tensors as linear operations, and the multipliciation would be the concatenated execution of the operation. On a formal... (more) |
— | 7 days ago |