13 citations · 26 across the 7 of their papers we have counts for
7 papers
Mass formulas and stringy point-count for semi-direct products of tame abelian groups and wild symmetric or cyclic groups in characteristic three
Takahiro Yamamoto
In positive characteristic, there exist counterexamples to the statement corresponding to Batyrev's theorem concerning the McKay correspondence. In this paper, we give another comp…
Explicitly Multi-Modal Benchmarks for Multi-Objective Optimization
Ryosuke Ota, Reiya Hagiwara, Naoki Hamada +3
In multi-objective optimization, designing good benchmark problems is an important issue for improving solvers. Controlling the global location of Pareto optima in existing benchma…
The v-function in the wild McKay correspondence is not determined by the ramification filtration
Takahiro Yamamoto
The \(v\)-function appears in the wild McKay correspondence and it is an invariant of a Galois extension over a local field which measures about the ramification of extension. The…
Crepant resolutions of quotient varieties in positive characteristics and their Euler characteristics
Takahiro Yamamoto
In characteristic zero, if a quotient variety has a crepant resolution, the Euler characteristic of the crepant resolution is equal to the number of conjugacy classes of the acting…
Pathological quotient singularities in characteristic three which are not log canonical
Takahiro Yamamoto
In characteristic zero, quotient singularities are log terminal. Moreover, we can check whether a quotient variety is canonical or not by using only the age of each element of the…
Singular fibers of stable maps of 3-manifolds with boundary into surfaces and their applications
Osamu Saeki, Takahiro Yamamoto
In this paper, we first classify singular fibers of proper stable maps of 3-dimensional manifolds with boundary into surfaces. Then, we compute the cohomology groups of…