Table 1.
List of Countries, Regions, and Index Symbol.
Fig 1.
Correlation matrices from 2017 to 2022.
Fig 2.
Filtered graphs for each year.
Colors represent the region.
Fig 3.
Average correlation , maximum eigenvalue (
), Euler characteristic (
), and average Ricci curvature (
) from 2017 to 2022.
Fig 4.
Scatter plots illustrating the relationships between topological, geometric, and spectral measures across different years.
Fig 5.
Temporal evolution of the maximum eigenvalue (, blue), Euler characteristic (
, red), and average Ricci curvature (
, black) using sliding windows of
(A) and
(B) trading days with a shift of
days.
Fig 6.
Temporal evolution of the average Ollivier–Ricci curvature and geometric network entropy
(
trading days).
Fig 7.
Temporal evolution of the largest eigenvalue and spectral entropy
(
).
Fig 8.
Relationship between the maximum eigenvalue (), Euler characteristic (
), and average Ricci curvature (
) across market periods.
Fig 9.
2D projections between the maximum eigenvalue (), Euler characteristic (
), and average Ricci curvature (
).
Fig 10.
Temporal evolution of the largest eigenvalue and spectral entropy
computed using a sliding window of
trading days and a shift of
days over the extended period 2017–2024.