3 papers
math.NT2022
Quantitative inverse Galois problem for semicommutative finite group schemes
Ratko Darda, Takehiko Yasuda
A semicommutative finite group scheme is a finite group scheme which can be obtained from commutative finite group schemes by iterated performing semidirect products with commutati…
math.NT2021
Rational points of bounded height on weighted projective stacks
Ratko Darda
A weighted projective stack is a stacky quotient , where the action of is with weights $\mathbf a\in\mathbb Z^n…
math.CO2018
Searching for square-complementary graphs: non-existence results and complexity of recognition
Ratko Darda, Martin Milanič, Miguel Pizaña
A graph is square-complementary (squco, for short) if its square and complement are isomorphic. We prove that there are no squco graphs with girth 6, that every bipartite graph is…