The Haefliger-type h-principle conjecture for totally nonparallel immersions

Let MM be a smooth closed manifold of dimension nn, and let F2(M)F_2(M) denote its ordered configuration space of two distinct points. The unordered configuration space is F2(M)/Z2F_2(M)/\mathbb Z_2, where Z2\mathbb Z_2 interchanges the two points. Let q72nq \geq \frac72 n. Haefliger-type h-principle conjecture. If there exists an immersion

g:F2(M)/Z2Rq,g:F_2(M)/\mathbb Z_2\to\mathbb R^q,

then there exists a totally nonparallel immersion MRqM\to\mathbb R^q. This is proposed as a totally nonparallel analogue of Haefliger's embedding theorem: an immersion of the unordered configuration space should provide the obstruction-theoretic data needed to construct a totally nonparallel immersion in the indicated dimension range. The paper does not establish this converse, although it proves existence of totally nonparallel immersions into R4n1\mathbb R^{4n-1} by other methods.

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Primary source

Michael Harrison, “Introducing Totally Nonparallel Immersions”, arXiv:1907.11312 (2020).

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