With this first issue of 2021, I can report that our journal is moving closer to representing the global readership has made us most widely circulated scholarly museum in world. The ten papers and exhibition review demonstrate new advances practice are emerging on every continent. And, am now proud efforts build an editorial board reflects countries where readers live work have been successful....

In this paper, we enumerate the parameter matrices of all perfect $2$-colorings of the Platonic graphs consisting of the tetrahedral graph, the cubical graph, the octahedral graph, the dodecahedral graph, and  the icosahedral graph.

Fuzzy sets are the most signi…cant tools to handle uncertain data while neutrosophic sets are the generalizations of fuzzy sets in the sense to handle uncertain, incomplete, inconsistent, indeterminate, false data. In this paper, we introduced fuzzy subspaces and neutrosophic subspaces (generalization of fuzzy subspaces) by applying group actions.Further, we de…ne fuzzy transitivity and neutros...

Uncertainty about the choice of identifying assumptions is common in causal studies, but often ignored empirical practice. This paper considers uncertainty over models that impose different assumptions, which can lead to a mix point‐ and set‐identified models. We propose performing inference presence such by generalizing Bayesian model averaging. The method multiple posteriors for combines them...