activity
20162025
most citedProperties of minimal charts and their applications IV: Loops

8 citations · 11 across the 15 of their papers we have counts for

collaborators

15 papers

math.GT2025

The linear minimal 4-chart with three crossings

Teruo Nagase, Akiko Shima

Charts are oriented labeled graphs in a disk. Any simple surface braid (2-dimensional braid) can be described by using a chart. Also, a chart represents an oriented closed surface…

math.GT2024

Properties of minimal charts and their applications X: charts of type

Teruo Nagase, Akiko Shima

Charts are oriented labeled graphs in a disk. Any simple surface braid (2-dimensional braid) can be described by using a chart. Also, a chart represents an oriented closed surface…

math.GT2024

Properties of minimal charts and their applications XI: no minimal charts with exactly seven white vertices

Teruo Nagase, Akiko Shima

Charts are oriented labeled graphs in a disk. Any simple surface braid (2-dimensional braid) can be described by using a chart. Also, a chart represents an oriented closed surface…

math.GT2023

Distinguishing surface-links with 4-charts with 2 crossings and 8 black vertices

Teruo Nagase, Akiko Shima

Charts are oriented labeled graphs in a disk. Any simple surface braid (2-dimensional braid) can be described by using a chart. Also, a chart represents an oriented closed surface…

math.GT2022

Properties of minimal charts and their applications IX: charts of type

Teruo Nagase, Akiko Shima

Charts are oriented labeled graphs in a disk. Any simple surface braid (2-dimensonal braid) can be described by using a chart. Also, a chart represents an oriented closed surface e…

math.CO2021

Properties of minimal charts and their applications VIII: charts of type

Teruo Nagase, Akiko Shima

Let be a chart, and we denote by the union of all the edges of label . A chart is of type if there exists a label such that , $w(Γ_m\capΓ_{m+1})=…

math.GT2020

Properties of minimal charts and their applications VII: charts of type

Teruo Nagase, Akiko Shima

Let be a chart, and we denote by the union of all the edges of label . A chart is of type if there exists a label such that , $w(Γ_m\capΓ_{m+…

math.GT2020

Properties of minimal charts and their applications VI: the graph in a chart of type

Teruo Nagase, Akiko Shima

Let be a chart, and we denote by the union of all the edges of label . A chart is of type if , , …

math.GT2019

Properties of minimal charts and their applications V: charts of type

Teruo Nagase, Akiko Shima

Let be a chart, and we denote by the union of all the edges of label . A chart is of type if there exists a label such that , $w(Γ_m\capΓ_{m+…

math.GT2017

The structure of a minimal -chart with two crossings II: Neighbourhoods of

Teruo Nagase, Akiko Shima

Given a 2-crossing minimal chart , a minimal chart with two crossings, set there exists an edge of label containing a white vertex, and the…

math.GT2017★ 1 cited

The structure of a minimal -chart with two crossings I: Complementary domains of

Teruo Nagase, Akiko Shima

This is the first step of the two steps to enumerate the minimal charts with two crossings. For a label of a chart we denote by the union of all the edges of label $m…

math.GT2016★ 2 cited

Minimal charts of type (3,3)

Teruo Nagase, Akiko Shima

Let be a chart. For each label , we denote by the "subgraph" of consisting of all the edges of label and their vertices. Let be a minimal chart of type $(m…

math.GT2016

Separating a chart

Teruo Nagase, Akiko Shima

In this paper, we shall show a condition for that a chart is C-move equivalent to the product of two charts, the union of two charts and which are contained in disks…

math.GT2016★ 8 cited

Properties of minimal charts and their applications IV: Loops

Teruo Nagase, Akiko Shima

We investigate minimal charts with loops, a simple closed curve consisting of edges of label containing exactly one white vertex. We shall show that there does not exist any lo…

math.GT2016

Minimal Charts

Teruo Nagase, Akiko Shima

In this paper, we give definitions of three kinds of minimal charts, and we investigate properties of minimal charts and establish fundamental theorems characterizing minimal chart…