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3-nilpotent obstructions to pi_1 sections for P^1_Q - {0,1,infty}
3-nilpotent obstructions math
2010/11/9
We study which rational points of the Jacobian of P^1_K -{0,1,infty} can be lifted to sections of geometrically 3 nilpotent quotients of etale pi_1 over the absolute Galois group. This is equivalent ...