惊呼 发表于 2025-3-26 21:33:16
Pierre Brugièrensional spaces. In order to accomplish this, we start with the key concepts of a semiflow and a flow. As is well known, the basic elements of dynamical systems, such as the theory of attractors and other invariant sets, have their origins here.978-1-4419-3118-4978-1-4757-5037-9Series ISSN 0066-5452 Series E-ISSN 2196-968X锯齿状 发表于 2025-3-27 02:51:53
Pierre Brugièrepment of sophisticated numerical codes accounting for the fragmentation of an asteroid and for the gravitational interactions of the generated fragments have allowed to improve greatly our knowledge on the main mechanisms that are at the origin of some observed features in the asteroid belt. In partErgots 发表于 2025-3-27 07:53:09
Pierre Brugièrepment of sophisticated numerical codes accounting for the fragmentation of an asteroid and for the gravitational interactions of the generated fragments have allowed to improve greatly our knowledge on the main mechanisms that are at the origin of some observed features in the asteroid belt. In part使坚硬 发表于 2025-3-27 10:21:35
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Markowitz Without a Risk-Free Asset,. can be constructed through an allocation between these two portfolios. As a consequence, when two optimal portfolios are found, the subsequent problem of finding other optimal portfolios is just a problem of allocation between these two funds.商品 发表于 2025-3-27 19:56:07
Markowitz with a Risk-Free Asset, is proportional to its relative market capitalisation. We also show in this chapter that the problem of optimal allocation can be segmented into two steps. First, the investor decides on the risk exposure he is ready to take, secondly, he calculates the allocation to the Tangent Portfolio which givdefibrillator 发表于 2025-3-27 23:44:46
Factor Models,rived from the observed variables, i.e. from the observed returns of the assets, and ., which are explanatory variables added to the model, such as inflation or macro-economic indicators. The normal distribution assumption is maintained here, keeping us in the Markowitz framework. When a factor mode解开 发表于 2025-3-28 02:21:03
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https://doi.org/10.1007/978-3-030-37740-3Markowitz theory; factor models; APT models; principal component analysis; Python code; 91G10, 91D70; risk