kansuukoukaiOctober.dvi

606-8502 okamoto@kurims.kyoto-u.ac.jp . , , , . , . , , . . 100 , 99 . , 99 100 . , . . . , [?, ?, ?] . , . , , . , . . . . , . 1 Euler— Everything, even the obvious, is earned with hard thinking by some pioneering genius. —Paul J. Nahin[?], (42 ). Newton Euler , . — [?], (177 ). In the early eighteenth century, functional notation was used only in very limited cir- cumstances. —Cannon & Dostrovsk