Daniel E. Martin

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math.NT2025

A new proof of Chen's theorem for Markoff graphs

Daniel E. Martin

In 2021, Chen proved a congruence for the degree of a certain map on the space of covers of elliptic curves. He concluded as a corollary that the size of any connected component of…

math.NT2025

Lower bounds on the $ℓ$ -rank of ideal class groups

Daniel E. Martin

For a prime number $ℓ$ and an extension of number fields $K / F$ , we prove new lower bounds on the $ℓ$ -rank of the ideal class group of $K$ based on prime ramification in $K / F$ …

A new proof of Chen's theorem for Markoff graphs

Lower bounds on the ℓ-rank of ideal class groups

Lower bounds on the $ℓ$ -rank of ideal class groups