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edit approved Apr 6, 2023 at 14:56
The Amplitwist
edit approved Apr 6, 2023 at 14:56
The Amplitwist
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You can find an elementary proof in Un théorème arithmétique sur les coniquesUn théorème arithmétique sur les coniques by Trygve Nagell in Ark. f. Mat. 2 (1952). This is a quadratic analogue of what Birch called Heegner's Lemma, which deals with the solvability of certain quartic equations.

You can find an elementary proof in Un théorème arithmétique sur les coniques by Trygve Nagell in Ark. f. Mat. 2 (1952). This is a quadratic analogue of what Birch called Heegner's Lemma, which deals with the solvability of certain quartic equations.

You can find an elementary proof in Un théorème arithmétique sur les coniques by Trygve Nagell in Ark. f. Mat. 2 (1952). This is a quadratic analogue of what Birch called Heegner's Lemma, which deals with the solvability of certain quartic equations.

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Franz Lemmermeyer
Franz Lemmermeyer
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You can find an elementary proof in Un théorème arithmétique sur les coniques by Trygve Nagell in Ark. f. Mat. 2 (1952). This is a quadratic analogue of what Birch called Heegner's Lemma, which deals with the solvability of certain quartic equations.