The SU(2)-abelian implies Heegaard Floer L-space conjecture

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Let YY be a rational homology 33-sphere. The SU(2)-abelian implies Heegaard Floer L-space conjecture. If YY is SU(2)SU(2)-abelian, then it is a Heegaard Floer L-space. Here, a Heegaard Floer L-space is a rational homology 33-sphere satisfying rank⁡HF^(Y)=∣H1(Y;Z)∣\operatorname{rank} \widehat{HF}(Y)=|H_1(Y;\mathbb{Z})|. This conjecture would connect the absence of non-abelian SU(2)SU(2)-representations with the simplest possible Heegaard Floer homology. The source presents it as expected and uses it to motivate consequences for toroidal manifolds; no resolution is supplied.

References

Primary source

Giacomo Bascape, “Toroidal graph manifolds with small homology are not SU(2)-abelian”, arXiv:2506.21729 (2025).

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