Is the following matrix invertible?


Clearly, its determinant is not zero and, hence, the matrix is invertible.

Is there a more elegant way to do this?

Is there a pattern among these entries?


Find the determinant. To make calculations easier, work modulo 2! The diagonal is 1‘s, the rest are 0‘s. The determinant is odd, and therefore non-zero.

Source : Link , Question Author : Yongkai , Answer Author : André Nicolas

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