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The (almost) integral Chow ring of $$\widetilde{{\mathcal {M}}}_3^7$$
This paper is the third in a series of four papers aiming to describe the (almost integral) Chow ring of \(\overline{\mathcal {M}}_3\), the moduli stack of stable curves of genus 3. In this paper, we compute the Chow ring of \(\widetilde{{\mathcal {M}}}_3^7\) with \({\mathbb {Z}}[1/6]\)-coefficients.