bipunctual

Having two points.

Finally, a study by Verhoeff indicates the possibility of the occurrence of visual apparent movement in the absence of serial bipunctual stimulation of the visual cortex.

We limit this paper to the bipunctual case : the signal is transmitted from a point A to a point B.

Relative to two distinct reference points.

The two systems are, in fact, practically identical; whatever can be proved for or with the one can be proved for or with the other; and it is only their relations to the bipunctual and bilinear systems that the distinction between the tripunctual and the trilinear systems comes into play: tripunctual coordinates standing in the same relation to bipunctual coordinates as trilinear to bilinear .

If X, Y, Z be a self-polar triad in regard to a conic, and O be any point, and XO, YO, and ZO meet YZ, ZX, XY, respectively, in A, B, C, then the conic is bipunctual in regard to A , B , C.