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 KASH3 Reference Manual
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Function

IsOne ( elt-res^num x ) -> elt-alg^boo

Description

True iff I is the identity ideal of its ring.

Examples

x_o := EquationOrder(X^2+5);; x_b := Ideal(x_o,Matrix(Z,2,2,[1,1,0,2]))^5;; x_x := One(Quotient(x_o,x_b)); IsOne(x_x);
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