28 citations · 115 across the 14 of their papers we have counts for
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math.NT2018★ 3 cited
Presentations of non-commutative deformation rings via -algebras and applications to deformations of Galois representations and pseudorepresentations
Carl Wang-Erickson
We introduce an -algebra structure on the Hochschild cohomology of the endomorphism bimodule of a finite-dimensional representation of an associative algebra. We prove th…
math.NT2018★ 6 cited
Class groups and local indecomposability for non-CM forms
Francesc Castella, Carl Wang-Erickson, Haruzo Hida
In the late 1990's, R. Coleman and R. Greenberg (independently) asked for a global property characterizing those -ordinary cuspidal eigenforms whose associated Galois representa…
math.NT2018★ 19 cited
The Eisenstein ideal with squarefree level
Preston Wake, Carl Wang-Erickson
We use pseudodeformation theory to study the analogue of Mazur's Eisenstein ideal with certain squarefree levels. Given a prime number and a squarefree number satisfying…