Kwa hivyo, eigenveekta za tumbo la duarani mizizi ya umoja -> Matrix ya Fourier.  Nimetumia Fourier Transform naDCT katika kuchakata picha na nikaona inashangaza lakini ya ajabu: ilitoka wapi?  Sasa najua.  Pia sikuwahi kutambua convolution kimsingi ni polynomial kuzidisha... na mviringo convolution inatumika kwa urahisi moduli kwa mamlaka!  Kupanuka kwa akili; shukrani Prof Strang!####[['Prof Strang!', 'Instructor', 'POS'], ['eigenveekta za tumbo la duara', 'Mathematical_Related_Concept', 'POS'], ['Fourier Transform', 'Mathematical_Related_Concept', 'POS'], ['DCT', 'Mathematical_Related_Concept', 'POS'], ['convolution', 'Mathematical_Related_Concept', 'POS'], ['polynomial kuzidisha', 'Mathematical_Related_Concept', 'POS']]