Groupoids arising from algebraic actions of semigroups are rigid: isomorphisms recover rational embeddings of the actions, and for rings of algebraic integers the groupoid determines the ring up to isomorphism.
Bhargava, The density of discriminants of quartic rings and fields , Ann
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
fields
math.DS 1years
2023 1verdicts
UNVERDICTED 1representative citing papers
citing papers explorer
-
Algebraic actions II. Groupoid rigidity
Groupoids arising from algebraic actions of semigroups are rigid: isomorphisms recover rational embeddings of the actions, and for rings of algebraic integers the groupoid determines the ring up to isomorphism.