Skip to content
T

Takaaki Fujita

Publications (7)

Modeling Molecular Interactions with Hyper-Networks and Super-Hyper-networks

Takaaki Fujita, Muhammad Gulistan & Arkan A. Ghaib · Advances in Research · 2025

Graph theory examines the structure of networks by treating entities as vertices and the connections between them as edges. A Hyper-Graph enhances this framework by permitting a single Hyper-edge to link multiple vertices at once. Building on that idea, a Super-Hyper-Graph introd...

Open access Research Article 10.9734/air/2025/v26i41412

Toward a Unified Theory of Brain Hypergraphs and Symptom Hypernetworks in Medicine and Neuroscience

Takaaki Fujita & Arkan A. Ghaib · Advances in Research · 2025

Many biomedical systems exhibit interactions that go beyond simple pairwise connections. A hypergraph generalizes a graph by permitting an edge to connect any number of vertices—such edges are called hyperedges. A superhypergraph further extends this concept by recursively nestin...

Open access Research Article 10.9734/air/2025/v26i31368

Modeling Hierarchical Systems in Graph Signal Processing, Electric Circuits, and Bond Graphs Via Hypergraphs and Superhypergraphs

Takaaki Fujita · Journal of Engineering Research and Reports · 2025

Graph theory is a core branch of mathematics concerned with representing and analyzing relationships among discrete elements. These concepts are widely used in fields such as electrical engineering. For example, graphs play a crucial role in important frameworks including Graph S...

Open access Research Article 10.9734/jerr/2025/v27i51522

Unifying Grain Boundary Networks and Crystal Graphs: A HyperGraph and SuperHyperGraph Perspective in Material Sciences

Takaaki Fujita · Asian Journal of Advanced Research and Reports · 2025

Graph theory provides a foundation for modeling relationships among discrete elements via vertices and edges (Diestel, 2000, 2005). HyperGraphs extend this framework by allowing edges—hyperedges—to join more than two vertices, while superhypergraphs introduce nested powerset laye...

Open access Research Article 10.9734/ajarr/2025/v19i51023

Hypergraph and Superhypergraph Approaches in Electronics: A Hierarchical Framework for Modeling Power-Grid Hypernetworks and Superhypernetworks

Takaaki Fujita · Journal of Energy Research and Reviews · 2025

Graphs are fundamental tools for modeling pairwise relationships in complex systems. However, many realworld infrastructures—such as energy systems—demand more expressive frameworks to represent multinode and hierarchical interactions. A hypergraph generalizes classical graphs by...

Open access Research Article 10.9734/jenrr/2025/v17i6425

An Introduction and Reexamination of Molecular Hypergraph and Molecular n-SuperHypergraph

Takaaki Fujita · Asian Journal of Physical and Chemical Sciences · 2025

A molecular graph is a labeled graph in which atoms are represented by vertices and covalent bonds by edges, with each edge labeled according to the bond type (Gasteiger et al., 2020). A hypergraph generalizes the concept of a traditional graph by allowing edges—called hyperedges...

Open access Research Article 10.9734/ajopacs/2025/v13i3248