Abstract
A part of the present investigation has already been reported in this journal No. 420 and No. 425. The present report is concerned with the subsequent detailed reserch on Le Corbusier's dualism that has been left unresolved. As is generally known, such a problem as art and technique in architecture has been considered many times over the past years. How can Le Corbusier's unity of dualism stand up ? I descride the meaning of Le Corbusier's geometry in detail.