Madrigal
发表于 2025-3-30 12:00:32
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Compass
发表于 2025-3-30 14:29:09
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和音
发表于 2025-3-30 17:23:26
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财主
发表于 2025-3-30 21:48:25
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有说服力
发表于 2025-3-31 00:53:56
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jeopardize
发表于 2025-3-31 05:36:06
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受伤
发表于 2025-3-31 12:30:43
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Custodian
发表于 2025-3-31 15:24:24
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领袖气质
发表于 2025-3-31 17:54:11
The Extension Property in the Category of Direct Sum of Cyclic Torsion-Free Modules over a BFD[.]) proved that the automorphisms having the property of extension in the category of groups, characterize the inner automorphisms. Ben Yakoub (Port. Math. .(2):231–233, 1994, [.]) proved that this result is not true in the category of algebras. But there are some very important results in the cate