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K.<a> = NumberField(x^2 +26);K;I = K.ideal(2);show(I)
res =  I.residues(); res;show(list(res));res =  (2*I).residues(); res;show(list(res))



***xmrange_iter([[0, 1], [0, 1]], <function <lambda> at
0xb94ab1c>)***
[0,a,1,a+1]

***xmrange_iter([[-1, 0, 1, 2], [-1, 0, 1, 2]], <function <lambda>
at 0xb94abfc>)***
[?a?1,?1,a?1,2a?1,?a,0,a,2a,?a+1,1,a+1,2a+1,?a+2,2,a+2,2a+2]



I know [0, 1] is a coordinates but what meanings about "lambda","0xb94abfc"?