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Updated: Dec 4, 2025

Detection of Architectural Distortion in Prior Mammograms via Analysis of Oriented Patterns
Published on: August 30, 2013
Geometric analysis of anharmonic downward distortion following paths
Shuichi Ebisawa1, Takuro Tsutsumi1, Tetsuya Taketsugu2,3
1Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Japan.
Abstract:
A mathematical aspect of the anharmonic downward distortion following (ADDF) path is discussed. The ADDF method is utilized as an automated reaction path search method, which can explore transition state geometries on a potential energy surface from a potential minimum. We show that the maximum number of the ADD stationary paths intersecting the potential minimum is 2f + 1 - 2, where f denotes the degree of freedom of the system. We also show that the bifurcation of the ADD stationary path is essential to detect all the transition states connected from a given minimum. The ADDF computation is demonstrated for a H2 O molecule in which pitchfork bifurcation is observed.
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