Timeline for A quadratic algebra with four generators and four relations
Current License: CC BY-SA 3.0
2 events
| when toggle format | what | by | license | comment | |
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| Oct 7, 2014 at 14:09 | comment | added | Johannes Hahn | This is not true. You cannot cancel. In fact consider the representation of $A$ on $k^\mathbb{N}$ where $x_1,x_2$ act as left shift and $y_1,y_2$ act as $y_1 (a_0,a_1,...) := (1,a_0,a_1,...)$ and $y_2 (a_0,a_1,...) := (2,a_1,a_2,...)$ respectively. | |
| Oct 7, 2014 at 14:06 | history | answered | AlainD | CC BY-SA 3.0 |