[{"source":{"position":40,"lines":["$$\begin{gathered}c_i=c_i-\\bar\\{c_i\\}\end{gathered}$$"],"changePosition":null},"target":{"position":40,"lines":["$$\begin{gathered}c_i=c_i-\\bar{c_i}\end{gathered}$$"],"changePosition":null},"type":"CHANGE"}]
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