“at infinity”

The following 2 entries include the term at infinity.

plane at infinity

: the aggregate of all points at infinity in projective geometry of three dimensions

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point at infinity

: an ideal mathematical point in projective geometry that preserves the magnitudes of all angles of a transformed plane

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  • any of a genus helianthus especially h annuus of new world composite plants with large yellow rayed flower heads bearing edible seeds that yield an edible oil
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