On the Equality of Rank of a Fourth-Idempotent Matrix

2019 International Journal of Scientific and Innovative Mathematical Research  
The equality of rank a fourth-idempotent matrix is established by means of elementary transformation and properties of idempotent matrix.
doi:10.20431/2347-3142.0705001 fatcat:yxe4x6nmqfbcljokenuaxay6sy