Gauss's Lemma

Apr 2008
50
0
Is there a formula for evaluating the number of negative residues in Guass's Lemma? Is it given by the ceiling function of (p-1)/4?
 
Jun 2013
1,110
590
Lebanon
p=11
a=9
number of negative residues: 2
the ceiling function: 3

they are not the same, not even the same parity
 
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