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 Algebraically concordant Seifert forms and knot concordance Commun. Korean Math. Soc.Published online January 22, 2020 Taehee Kim Konkuk University Abstract : We show that if $M$ and $V$ are Seifert forms such that $M$ is metabolic and the Alexander polynomial of $M$ is nontrivial, then there exists a knot $K$ which has Seifert form $M\oplus V$ but is not concordant to any knot with Seifert form $V$. Keywords : Concordance, Seifert forms, von-Neumann $\rho$-invariants MSC numbers : 57N70, 57M25 Full-Text :