Question: Is it possible to recover the lost A-modules, from knowing only B ? |
The answer to this question came completely unexpected
- and
from outside, from investigations concerning
"cluster algebras" as introduced by Fomin and Zelevinsky.
There is not enough time to sketch this development,
but we want to outline the final
step: the introduction of the "cluster tilted algebras".
Actually: The question was not even asked before the answer was given!