deletions | additions       diff --git a/The 90 Thing.tex b/The 90 Thing.tex  index 666479a..257fafb 100644  --- a/The 90 Thing.tex  +++ b/The 90 Thing.tex 
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Moreover [check this next bit]  The non-existance of a $q$ in the range [1,n] that $n-q \; \mathrm{mod} \; (1+2q) = 0$, then $(90;;n)+1$, is neccesary but not sufficient fr for  a primality check.