2026. Short Elucidating Note 126:  Stating the structural falsification theorem for specific paradigms of the form K = L, its main conceptual applications and its extension of Popperian logic and of Kuhnian logic all in compressed form using set theory and sustainability gap theory? Neewaj Journal of Multidisciplinary Research & Innovations. 2, 3 (Aug. 2026). DOI:https://doi.org/10.5281/zenodo.21877537.