下级
发表于 2025-3-25 05:36:12
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强有力
发表于 2025-3-25 07:54:27
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符合规定
发表于 2025-3-25 13:46:01
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Trochlea
发表于 2025-3-25 16:59:20
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Cursory
发表于 2025-3-25 21:34:36
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孤僻
发表于 2025-3-26 00:55:11
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小故事
发表于 2025-3-26 06:22:42
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interlude
发表于 2025-3-26 12:20:57
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欢腾
发表于 2025-3-26 16:40:20
http://reply.papertrans.cn/35/3458/345798/345798_29.png
hieroglyphic
发表于 2025-3-26 18:00:45
Computing Preimages and Ancestors in Reaction Systems, respectively. Many computational problems on preimages and ancestors, such as finding all minimum-cardinality .-th ancestors, computing their size, or counting them, are intractable. In this paper we propose a characterization of .-th ancestors as a Boolean formula, and we define an operator able