The size of a stratifying system can be arbitrarily large by Treffinger, Hipolito

“…We note that both families of examples are built using well-established results in higher homological algebra.…”
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Doubly slice knots and obstruction to Lagrangian concordance by Chantraine, Baptiste, Legout, Noémie

“…Those examples are of interest because the Legendrian contact homology algebra cannot be used to obstruct such a concordance.…”
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