Hassanzadeh–Naeliton conjecture for algebraic residual intersections

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Let RR be a Cohen–Macaulay local ring of dimension dd, let II be an ideal satisfying sliding depth, and let ss be the residual-intersection parameter. An algebraic ss-residual intersection is an ideal J=a:RIJ=\mathfrak a:_R I satisfying the algebraic residual-intersection hypotheses. A disguised residual intersection is the ideal obtained from the associated Koszul–Čech construction. Hassanzadeh–Naeliton's conjecture. If

depth⁡(R/I)≥d−s,\operatorname{depth}(R/I)\geq d-s,

then every algebraic ss-residual intersection of II coincides with the disguised residual intersection. The preceding results establish this coincidence in several cases, including height-two ideals and arithmetic residual intersections, while the supplied text leaves the stated generality unresolved.

References

Primary source

Vinicius Bouça and Seyed Hamid Hassanzadeh, “Residual Intersections are Koszul-Fitting ideals”, arXiv:1810.05134 (2019).

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