Sir I have a doubt,sir can u explain the word "KaTaPaYaDi sankya" I heard that word in a guest lecture video. Unfortunately that video was broken.I have only some part. Lecture was given by Mr.Dinesh(B.tech metalurgy)IIT Bombay.
kadapayadi number system can be seen in the music book. name of the melakartha raga is given based on this number system. in which alphabets have numbers to show the values. sasi means 55 in that number system.