deletions | additions       diff --git a/The 21 thing.tex b/The 21 thing.tex  index b85d3bf..95540f0 100644  --- a/The 21 thing.tex  +++ b/The 21 thing.tex 
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\end{array}  \end{equation}  showing the constant $k^n_N$ has $n\cross $n \times  N$ digits.