共查询到20条相似文献,搜索用时 20 毫秒
1.
2.
3.
4.
5.
6.
7.
8.
9.
Müfit Şan 《Comptes Rendus Mathematique》2018,356(3):293-300
The first aim of this work is to establish a Peano-type existence theorem for an initial value problem involving a complex fractional derivative, and then, as a consequence of this theorem, to give a partial answer for the local existence of the continuous solution to the initial value problem: Moreover, for some special cases of the problem, we investigate the corresponding geometric properties of the solutions. 相似文献
10.
11.
12.
13.
14.
15.
16.
17.
We prove the so-called conjecture: for every real-monic polynomial of degree there exists an n by n matrix with sign patternwhose characteristic polynomial is . The proof converts the problem of determining the nonsingularity of a certain Jacobi matrix to the problem of proving the non-existence of a nonzero matrix B that commutes with a nilpotent matrix with sign pattern and has zeros in positions , and for . 相似文献
18.
19.
In this paper we study the existence of distributional solutions of Dirichlet problems whose simplest example is 相似文献