TA2 最近の更新履歴 Econometrics Ⅰ 2016 TA session

We find the criteria for the solvability of the operator equation AX − XB = C, where A, B , and C are unbounded operators, and use the result to show existence and regularity

In this paper we are interested in the solvability of a mixed type Monge-Amp`ere equation, a homology equation appearing in a normal form theory of singular vector fields and the

In order to achieve the minimum of the lowest eigenvalue under a total mass constraint, the Stieltjes extension of the problem is necessary.. Section 3 gives two discrete examples

In particular, a 2-vector space is skeletal if the corresponding 2-term chain complex has vanishing differential, and two 2-vector spaces are equivalent if the corresponding 2-term

Key words and phrases: higher order difference equation, periodic solution, global attractivity, Riccati difference equation, population model.. Received October 6, 2017,

To ensure integrability, the R-operator must satisfy the Yang–Baxter equation, and the monodromy operator the so-called RM M -equation which, in the case when the auxiliary

Theorem 3.5 can be applied to determine the Poincar´ e-Liapunov first integral, Reeb inverse integrating factor and Liapunov constants for the case when the polynomial

Burton, “Stability and Periodic Solutions of Ordinary and Func- tional Differential Equations,” Academic Press, New York, 1985.