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Results tagged with examples
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user 13693
For questions requesting examples of a certain structure or phenomenon
4
votes
Examples of seemingly elementary problems that are hard to solve?
Zamolodchikov’s conjecture : Let $I$ be an $n$-element set of indices, and $A = (a_{ij})_{i,j\in I}$ an indecomposable Cartan matrix of finite type. (You don't have to use these words. There is an ex …
69
votes
28
answers
12k
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Examples of seemingly elementary problems that are hard to solve?
I'll be grateful for any more examples. …