25:24 Ili kuthibitisha AB na BA zinashiriki sawa eigenvalues, nadhani hapa uthibitisho unathibitisha kesi wakati B ni invertible. Kwa hivyo huu sio uthibitisho wa jumla.####[['AB', 'Mathematical_Related_Concept', 'NEU'], ['BA', 'Mathematical_Related_Concept', 'NEU'], ['eigenvalues', 'Mathematical_Related_Concept', 'NEU'], ['invertible', 'Mathematical_Related_Concept', 'NEU']]