Mohanarao Navuluri, Shantha lakshmi K. δβ-open Sets in Pythagorean Neutrosophic Nano Topological Spaces and Their Application via Machine Learning. Neutrosophic Sets Syst. 2026;99:234-251. Accessed May 29, 2026. https://fs.unm.edu/nss8/index.php/111/article/view/7626