The nonvanishing conjecture for the FJRW recursion coefficient

Let Θg,k\Theta_{g,k} denote the genus gg FJRW invariant of the Fermat quintic with kk insertions, and let eg,ke_{g,k} be the scalar coefficient of Θg,k\Theta_{g,k} in the polynomial relation produced by the proposed localization algorithm.

Nonvanishing conjecture. The coefficient satisfies

eg,k0.e_{g,k}\neq0.

When this coefficient is nonzero, the proposed relation evaluates Θg,k\Theta_{g,k} from invariants of lower genus and from Θg,k\Theta_{g,k'} with k<kk'<k. The conjecture is therefore the key missing condition for the recursive FJRW algorithm.

Sources & referencesView supporting material

Primary source

Huai-Liang Chang, Jun Li, Wei-Ping Li and Chiu-Chu Melissa Liu, “An effective theory of GW and FJRW invariants of quintics Calabi-Yau manifolds”, arXiv:1603.06184 (2019).

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