矩阵空间怎么理解啊对于The dimension of the whole n by n matrix space is n^2有人说是几个基本向量组成的.那The dimension of the subspace of upper triangular matrices is 1/2n^2+1/2怎么理解啊,upper triangular

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矩阵空间怎么理解啊对于The dimension of the whole n by n matrix space is n^2有人说是几个基本向量组成的.那The dimension of the subspace of upper triangular matrices is 1/2n^2+1/2怎么理解啊,upper triangular
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矩阵空间怎么理解啊对于The dimension of the whole n by n matrix space is n^2有人说是几个基本向量组成的.那The dimension of the subspace of upper triangular matrices is 1/2n^2+1/2怎么理解啊,upper triangular
矩阵空间怎么理解啊
对于The dimension of the whole n by n matrix space is n^2有人说是几个基本向量组成的.那The dimension of the subspace of upper triangular matrices is 1/2n^2+1/2怎么理解啊,upper triangular

矩阵空间怎么理解啊对于The dimension of the whole n by n matrix space is n^2有人说是几个基本向量组成的.那The dimension of the subspace of upper triangular matrices is 1/2n^2+1/2怎么理解啊,upper triangular
upper triangular matrices 是上三角矩阵(即是对角线下面的元素都是零,对角线与对角线上的元素没有限制),所有上三角矩阵构成的空间维数可以数出是n(n+1)/2