共查询到10条相似文献,搜索用时 125 毫秒
1.
Gelu Popescu 《Advances in Mathematics》2009,220(3):831-3417
In this paper, we study free pluriharmonic functions on noncommutative balls γ[Bn(H)], γ>0, and their boundary behavior. These functions have the form
2.
M. Anoussis 《Advances in Mathematics》2004,188(2):425-443
Let G be a compact group, not necessarily abelian, let ? be its unitary dual, and for f∈L1(G), let fn?f∗?∗f denote n-fold convolution of f with itself and f? the Fourier transform of f. In this paper, we derive the following spectral radius formula
3.
J. Mc Laughlin 《Journal of Number Theory》2007,127(2):184-219
Let f(x)∈Z[x]. Set f0(x)=x and, for n?1, define fn(x)=f(fn−1(x)). We describe several infinite families of polynomials for which the infinite product
4.
E. Ciechanowicz I.I. Marchenko 《Journal of Mathematical Analysis and Applications》2011,382(1):383-398
Let f be a transcendental meromorphic function of finite lower order with N(r,f)=S(r,f), and let qν be distinct rational functions, 1?ν?k. For 0<γ<∞ put
5.
Yasuhito Miyamoto 《Journal of Differential Equations》2010,249(8):1853-1870
Let (n?3) be a ball, and let f∈C3. We are concerned with the Neumann problem
6.
Michela Eleuteri 《Journal of Mathematical Analysis and Applications》2008,344(2):1120-1142
We prove regularity results for minimizers of functionals in the class , where is a fixed function and f is quasiconvex and fulfills a growth condition of the type
L−1|z|p(x)?f(x,ξ,z)?L(1+|z|p(x)), 相似文献
7.
8.
H. Giacomini 《Journal of Differential Equations》2005,213(2):368-388
We consider a planar differential system , , where P and Q are C1 functions in some open set U⊆R2, and . Let γ be a periodic orbit of the system in U. Let f(x,y):U⊆R2→R be a C1 function such that
9.
Given α>0 and f∈L2(0,1), we are interested in the equation
10.
Michael Dorff 《Journal of Mathematical Analysis and Applications》2004,290(1):55-62
We introduce the class L(β,γ) of holomorphic, locally univalent functions in the unit disk , which we call the class of doubly close-to-convex functions. This notion unifies the earlier known extensions. The class L(β,γ) appears to be linear invariant. First of all we determine the region of variability for fixed z, |z|=r<1, which give us the exact rotation theorem. The rotation theorem and linear invariance allows us to find the sharp value for the radius of close-to-convexity and bound for the radius of univalence. Moreover, it was helpful as well in finding the sharp region for , for which the integral , f∈L(β,γ), is univalent. Because L(β,γ) reduces to β-close-to-convex functions (γ=0) and to convex functions (β=0 and γ=0), the obtained results generalize several corresponding ones for these classes. We improve as well the value of the radius of univalence for the class considered by Hengartner and Schober (Proc. Amer. Math. Soc. 28 (1971) 519-524) from 0.345 to 0.577. 相似文献