The set of real matrices described by a sign pattern (a square matrix whose entries are elements of {+,âˆ’, 0}) has been studied extensively. A simple graph has been associated with the set ofâ€¦ (More)

In this paper we show that a partial sign symmetric P -matrix, whose graph of specified entries is an n-cycle with n â‰¥ 6, can be completed to a sign symmetric P -matrix. The analogous completionâ€¦ (More)

The author presents a method for the mapping of diencephalic somatotopography by the use of computerized image acquisition of CT and/or MRI scans with a computer graphics technique. Data gatheredâ€¦ (More)

In this paper it is shown that a partial sign symmetric P -matrix, whose digraph of specified entries is a symmetric n-cycle with n â‰¥ 6, can be completed to a sign symmetric P matrix. The analogousâ€¦ (More)

A brief review of the problem of correcting for the error resulting from rotation of the head in the stereotactic frame is presented along with a method devised by the author for calculating itsâ€¦ (More)

The finding of increased exfoliation rates of renal cells after the ingestion of mild analgesic and other drugs has raised the question of the significance of a celluria in assessing the extent orâ€¦ (More)