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Triangle debts means of complex debt relations among a few firms.They owe debts each other.In this paper a mathematical model of Triangle debts is established and studied with debt transformers defined.The results are that the debt transformers which connected only three debtors and creditors can delete all the debts owed each others multiple,and the debt transformers which connected only four debtors and creditors can lead out the... Triangle debts means of complex debt relations among a few firms.They owe debts each other.In this paper a mathematical model of Triangle debts is established and studied with debt transformers defined.The results are that the debt transformers which connected only three debtors and creditors can delete all the debts owed each others multiple,and the debt transformers which connected only four debtors and creditors can lead out the simplest debt relations. 从清理三角债的角度,对三角债建立数学模型并进行初步的研究。研究结果表明,通过仅涉及三方的债务归结就可以消除所有的三角债务,即多边的相互拖欠债务关系;通过仅涉及四方的债务交换,就可以整理得到一种最简单的债务关系 Discusses the relationship between time and money with factor of inflation into an account,and deducts the formula of Net Present Value Method under the condition of inflation. Concludes that inflation is helpful to the debtors rather than the creditors, and theoretical price of interest with the state debt decreases with the increase of base interest rate and inflation rate. 本文探讨了考虑通货膨胀因素的资金时间价值问题,推导出通货膨胀条件下NPV法的基本公式,通过两个现实案例的分析,结果表明:通货膨胀会给贷款者带来好处,而对放贷者不利;附息国债的理论价格随基准利率、通货膨胀率的上升而降低。 Commercial housing pre-selling contract is a buying-selling contract in itself but different from the common ones;instead a special form of house buying-selling contract. A pre-selling contract is a source appointment rather than a pre-appointment. Pre-selling contract does not come into effect until registered. The registration is not property right registration:what pre-sellers get is not the ownership of houses but a kind of creditor's right.... Commercial housing pre-selling contract is a buying-selling contract in itself but different from the common ones;instead a special form of house buying-selling contract. A pre-selling contract is a source appointment rather than a pre-appointment. Pre-selling contract does not come into effect until registered. The registration is not property right registration:what pre-sellers get is not the ownership of houses but a kind of creditor's right. 商品房预售合同就其性质而言是买卖合同的一种,但不是一般的买卖合同,而是一种特殊形式的房屋买卖合同。它也不同于一般的分期付款买卖合同。它虽然是预售合同,但不是预约,而是本约。预售合同以登记为生效要件,这种登记不同于产权登记,房屋预购人取得的权利不是房屋的所有权,仍然是一种债权。
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