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10:50 - Coffee break.
11:10 - M.Larsen: The inverse Galois problem for Mordell-Weil modules.
12:10 - T.Arad: Some topics in table algebra theory.
13:10 - Lunch break: all participants are invited for lunch at Beit Belgia, on campus.
15:00 - S.Haran: The mysteries of the Real prime.
16:00 - A.Melnikov: Combinatorial descriptions of orbital varieties closure inclusions. (Abstract)
16:50 - Coffee break.
17:10 - M.Sageev: Groups and CAT(0) cubical complexes.
18:30 - A buffet dinner at the courtyard of the Institute of Mathematics, all participants are invited.
10:50 - Coffee break.
11:10 - M.Belolipetsky: Finite groups and hyperbolic manifolds. (Abstract)
12:10 - S.Solomon: Linear group-subgroup pairs with the same invariants. (Abstract)
13:10 - Lunch break (as above).
15:00 - A.Kanel-Belov: Polynomial endomorphisms and the generalized cancellation conjecture. (Abstract)
16:00 - E.Plotkin: Engel-like characterization of radicals in finite groups and finite dimensional Lie algebras. (Abstract)
End of the Symposium.
Suppose that A[t] is isomorphic toB[s]. Then A and B may be not isomorphic. However, if there is an embedding of A[t] in B[s] then A can be embedded in B. Moreover, if the isomorphism sends t to s, then A and B are isomorphic. This answers the so-called Samuel conjecture. Another implication is: suppose V \times K \equivK^4. Then the algebraic variety V is byrationally equivalent to K^3.
Joint work with T.Bandman, M.Borovoi, F.Grunewald, B.Kunyavskii
One can compare a classification of exceptional pairs to the main theorem of the Galois theory, establishing a bijection between subgroups of the Galois group of a field extension L/K and subfields of L containing K. In other words, a finite group is uniquely determined by its invariants. By classifying exceptional pairs we establish that a group is almost always uniquely determined by its invariants, for other classes of groups, namely, irreducible and orthogonal groups.
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