2г—4 | See:

or similar, there are several recent papers on 2D semiconductors and spinels: CrGa

: A paper in ScienceDirect discusses the wafer-scale synthesis of wide bandgap 2D layers for electronic applications. [2601.00058] $2+2=4$ - arXiv See: 2Г—4

" by , published in January 2026 . Core Concepts of the Paper or similar, there are several recent papers on