3 citations · 4 across the 4 of their papers we have counts for
9 papers
The level mapping class group of a compact non-orientable surface
Ryoma Kobayashi
Let be a genus compact non-orientable surface with boundaries. We explain about relations on the level mapping class group of $N_{g,0…
The level principal congruence subgroup of
Nao Imoto, Ryoma Kobayashi
The abelianization of the level principal congruence subgroup of was determined by Lee-Szczarba. By this result and a result of Tits, we ca…
Learning from Label Proportions with Instance-wise Consistency
Ryoma Kobayashi, Yusuke Mukuta, Tatsuya Harada
Learning from Label Proportions (LLP) is a weakly supervised learning method that aims to perform instance classification from training data consisting of pairs of bags containing…
On squares of Dehn twists about non-separating curves of a non-orientable closed surface
Nao Imoto, Ryoma Kobayashi
The level mapping class group of an orientable closed surface can be generated by squares of Dehn twists about non-separating curves. On the other hand, the level mapping c…
Simple infinite presentations for the mapping class group of a compact non-orientable surface
Ryoma Kobayashi
Omori and the author have given an infinite presentation for the mapping class group of a compact non-orientable surface. In this paper, we give more simple infinite presentations…
An infinite presentation for the twist subgroup of the mapping class group of a compact non-orientable surface
Ryoma Kobayashi, Genki Omori
A finite presentation for the subgroup of the mapping class group of a compact non-orientable surface generated by all Dehn twists was given by Stukow. In this paper, we give an in…