Kipruto M, Simiyu AN, Wekesa AW. On the exponential and approximate point spectrum of a bounded linear operator in Banach spaces. ASAREV [Internet]. 2025 Apr. 21 [cited 2026 Apr. 20];2(1):6-23. Available from: https://asarev.net/ojs/index.php/asarev/article/view/11