Abstract:Example 3. Let the one-dimensional torus act on the surface x 2 = yz 3 according to the formula (x, y, z) --+ (tx, t2y, z). Then the fibers of the morphism of passage to the quotient are affine lines that are normal, and the quotient is normal as well, but the surface itself is not normal.Finally, let us list the linear groups from two classes indicated below that satisfy the conditions of the theorem.The irreducible representations of semisimple groups: SO,~, S2SL=, A2SL2k, Spin7, Spin9, G2, E6, SL, | SLn , S… Show more
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