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semirings_with_identity_and_zero [2012/06/05 18:04]
jipsen
semirings_with_identity_and_zero [2012/06/05 18:06] (current)
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$\begin{array}{lr} $\begin{array}{lr}
-f(1)= &1\\ +f(1)= &  1\\ 
-f(2)= &2\\ +f(2)= &  2\\ 
-f(3)= 6\\ +f(3)= &   6\\ 
-f(4)= 40\\ +f(4)= &  40\\ 
-f(5)= 295\\ +f(5)= & 295\\ 
-f(6)= 3246\\+f(6)= &3246\\
\end{array}$ \end{array}$