Numerical exceptional collection conjecture for fake projective spaces

Let MM be an nn-dimensional fake projective space whose canonical class is numerically divisible by n+1n+1. Choose a line bundle LL such that

KM=(n+1)L,K_M=(n+1)L,

and let EiE_i be line bundles satisfying

EiiL,1in.E_i\equiv-iL, 1\leq i\leq n.

Numerical exceptional collection conjecture. For a suitable choice of the line bundles EiE_i, the sequence

OM,E1,E2,,En\mathcal{O}_M,E_1,E_2,\dots,E_n

is an exceptional collection on MM.

This is proposed as a more general problem motivated by the search for exceptional objects on fake projective spaces. The supplied text gives no resolution status; the problem is presented as a conjectural extension of the ordinary divisibility statement.

Sources & referencesView supporting material

Primary source

Ching-Jui Lai and Sai-Kee Yeung, “Exceptional collection of objects on some fake projective planes”, arXiv:2108.02412 (2021).

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