Figure 2. Any development D is an α-Sustainable, but graded into one of the five categories as per our work . (fuzzy concept)

From

Major Reform of “United Nations” (UN) & Twenty Fuzzy Sustainable Development Goals: a Proposal

Ranjit Biswas

World Journal of Social Sciences and Humanities. 2026, 12(2), 35-63 doi:10.12691/wjssh-12-2-1