gistfile1.txt

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    "$$\n",
    "\\begin{bmatrix}\n",
    "0 & 2 & 3 & 1\\\\\n",
    "3 & 1 & 0 & 2\\\\\n",
    "1 & 3 & 2 & 0\\\\\n",
    "2 & 0 & 1 & 3\\\\\n",
    "\\end{bmatrix} =\n",
    "\\begin{bmatrix}\n",
    "a & c & d & b\\\\\n",
    "d & b & a & c\\\\\n",
    "b & d & c & a\\\\\n",
    "c & a & b & d\\\\\n",
    "\\end{bmatrix}\n",
    "$$"
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