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If a knot has Seifert matrix and has a prime power cyclic branched cover that is not a homology sphere, then there is an infinite family of non–concordant knots having Seifert matrix .
Livingston, Charles 1
@article{GT_2002_6_1_a13, author = {Livingston, Charles}, title = {Seifert forms and concordance}, journal = {Geometry & topology}, pages = {403--408}, publisher = {mathdoc}, volume = {6}, number = {1}, year = {2002}, doi = {10.2140/gt.2002.6.403}, url = {http://geodesic.mathdoc.fr/articles/10.2140/gt.2002.6.403/} }
Livingston, Charles. Seifert forms and concordance. Geometry & topology, Tome 6 (2002) no. 1, pp. 403-408. doi : 10.2140/gt.2002.6.403. http://geodesic.mathdoc.fr/articles/10.2140/gt.2002.6.403/
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