The purpose of the article is to give a proof of a conjecture of Maulik and
Pandharipande for genus 2 and 3. As a result, it gives a way to determine
Gromov-Witten invariants of the quintic threefold for genus 2 and 3.Comment: We improve our results and add an example which computes genus 2,
degree 1 invariant. This is the final version which is accepted by Advances
in Mathematics. The final authenticated version is available online via the
DOI belo