In general, whenever you see an expression like A inverse times M times A, it suggests a mathematical sort of empathy.

一般来说 当你看到A的逆乘以M乘以A这样的表达式时 它暗示了一种数学上的同理心。

So the core property of this transformation, A inverse, is that a inverse times a equals the matrix that corresponds to doing nothing.

所以这个变换的核心性质 A逆 就是A逆乘以A等于对应于什么都不做的矩阵。