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. Author manuscript; available in PMC: 2016 Mar 5.
Published in final edited form as: J Comput Chem. 2014 Dec 19;36(6):408–422. doi: 10.1002/jcc.23816

Figure 5.

Figure 5

Correlation matrix based filtration of fullerene C60 (labels on both axes are atomic numbers). A correlation matrix is constructed from the FRI theory. As the filtration parameter increases, the Rips complex based on this matrix expands accordingly. (a) The correlation based matrix for fullerene C60; (b), (c) and (d) demonstrate the connectivity between atoms at the filtration threshold d = 0.lA, 0.3A, and 0.5A, respectively. The blue color entries represent the pairs already forming simplices.