It follows that all lines in which corresponding planes in two projective pencils meet form a congruence.
projective telepathy had only been a crackpot's idea back then.
Both of them ignore the projective force of habit and the implication of habits in one another.
Every habit is impulsive, that is projective, urgent, and the habit of knowing is no exception.
The author is an architect and has written much of his art and of projective ornament.
Similarly an axial pencil may be projective to an axial pencil.
Two projective rows are perspective if they lie in the same plane, and if the one row is a projection of the other.
They are cut by the lines of the other set in two projective rows.
All this is simply a puzzle to the child; his father's conduct is capricious, "projective."
Sound, then, is formed by a triple agent--projective, vibrative and reflective.