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638b37e | 1 2 3 4 5 6 7 8 9 | {
"description": "One-cell circle with a pi rotation; H1 over integers is Z/2 + Z/2 + Z.",
"B": [[-2,0,0],[0,-2,0],[0,0,0]],
"C": [],
"W": [[1,0,0],[0,1,0],[0,0,1]],
"a": ["1/3","1/4","7/5"],
"target": "integral"
}
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