Nori's Homotopy Conjecture for lifting surjections
Nori's Homotopy Conjecture for lifting surjections
Let be a smooth affine variety of dimension . Let be a projective -module of rank , and let be a surjective homomorphism onto an ideal of . Assume that is smooth of dimension . Let be a smooth subscheme intersecting transversally in . Suppose that is a surjective map satisfying
Homotopy Conjecture. There exists a surjective map such that
and
The conjecture is a lifting statement for homotopy obstructions associated with surjections onto ideals; it asserts that compatible data modulo can be lifted while preserving the prescribed specialization at . The source presents it as Nori's Homotopy Conjecture, while noting that Nori's ideas were communicated informally and appeared in differing forms in the literature; its resolution is not established in the supplied text.
Progress summary
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Sources & referencesView supporting material
Primary source
Satya Mandal and Bibekananda Mishra, “The Monoid Structure on Homotopy Obstructions”, arXiv:1612.00749 (2019).
Additional references
2 papers in this index state this conjecture (2016). The statement above is taken from the most recent of them; the others are arXiv:1610.07495.
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