ideal point

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ide′al point′

the point at infinity assumed to be the point at which parallel lines intersect.
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E(Fp) forms an abelian group with [infinity], point at infinity serving as the identity element with respect to addition [8].
The thrust of the present investigation is provided by the mapping of Neumann to Dirichlet eigen-problems that obtains as the complex boundary parameter varies from zero to the point at infinity along a fixed direction in the complex plane.
The principal focus will be on what happens to the eigenstructure of the Neumann problem ([sigma] = 0) as [sigma] proceeds along rays emanating from the origin toward the point at infinity in the complex plane.