以下为句子列表：
英文: Under the assumptions that every two assets could be traded directly, and the proportions of the transaction costs are functions of the traded assets and time, the a continuous market model was construted, which led to the result that there was no arbitra
中文: 摘要假定任意两资产均可直接交易，且交易费率为资产和时间的非随机函数，建立了有交易费的连续时间市场模型；利用辅助鞍和资产折算函数等方法得到了一个重要结果，即在给定的可允许策略集下，该市场无套利。
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英文: With the empirical study on pure samples of the listed companies without their ownership transferred, the thesis uses the method of market model to detect the long-run extra stock returns of companies after their recombination of different forms.
中文: 摘要选取控制权未发生转移型的资产重组事件的上市公司为研究样本，采用市场模型法从不同资产重组方式的角度对上市公司资产重组绩效的影响进行了研究。
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