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Abstract: In this text we investigate the good behaviour of the elementary obstruction,introduced by Colliot-Thelene and Sansuc. This is an obstruction to theexistence of a rational points on certain algebraic varieties. Assuming someconditions on the Picard group, we prove that the elementary obstructionbehaves well under the Weil restriction of a variety.



Author: Tim Wouters

Source: https://arxiv.org/







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