数式

Introductory Note. It seems impossible to describe directly all of the artificial and natural landscape planting types by some simplified symbolical letters. But, requirement of such formulae, if possible, among many landscape experts in our field is very essential. They believe it will be convenient if such expression of construction form in planting space and in tree height of the given types as well as the identification of tree species will be completed. The author is trying to satisfy such requirement and propose here a new conception from such standpoint. It is named as "Diagramatical Landscape Planting Type (D. L. P. T.)" and will be never suggested in our group. By such formulae definite geometrical pattern and its repetitional form are assumed, whose necessary and sufficient condition is to hold simplication of such types, especially of horizontal and vertical relation among the individual trees composing the given mother type as well as the identification of the tree species. (Proportion of number of the diagramatical types to the same of its mather types is ∞ : ∞^∞.) Now it become possible to solve to express such a given diagramatical types by some simple definite mathematical formulae (course I) whose method being the essential subject of this paper. Moreover, it will be theoletically possible to extract the most suitable diagramatical type, whose proper mathematicaI formulae may be found, from any given mother types, the necessary character of the later projected on the former as severally as possible (course II); while its practical technique must depend on field workers geneous or on a few authorities, and such must be the natural consequence of the subject itself, as to the authors belief.