<｜begin▁of▁sentence｜>### Instruction:
As a performance artist working on an interactive art installation, I need to identify the additional connections needed to make the network of nodes more interconnected and chordal. The specific task involves analyzing an undirected graph with the following edge set: [(0, 1), (1, 2), (2, 0), (1, 3), (3, 4), (4, 1)]. With this information, the goal is to calculate and display the edges that must be added to the graph to achieve a chordal structure, creating a sense of harmony and connectivity within the artwork.
### Response:
import igraph as ig

# Create an undirected graph
edges = [(0, 1), (1, 2), (2, 0), (1, 3), (3, 4), (4, 1)]
g = ig.Graph(edges=edges, directed=False)

# Calculate the chordal completion of the graph
chordal_edges = g.chordal_completion()

# Print the edges to be added to make the graph chordal
print('Edges to be added:', chordal_edges)
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