Fourier series for fuzzy valued function using pentadecagonal fuzzy number

摘要

Fourier analysis is one of the powerful tool for many problems. In the present paper, we have defined the membership function for the closed interval which helps us in time frequency analysis. The Fourier series periodic function for Pentadecagonal fuzzy number is defined and it found to be symmetric. The reverse order pentadecagonal fuzzy number for fourier series fuzzy valued function is also defined and it is found to be symmetric.