# Czechoslovak Mathematical Journal

## Vol. 62, No. 2, 2012 · Contents

Rahmatollah Lashkaripour, Gholomraza Talebi:
Lower bound and upper bound of operators on block weighted sequence spaces

Sahbi Boussandel, Ralph Chill, Eva Fašangová:
Maximal regularity, the local inverse function theorem, and local well-posedness for the curve shortening flow

Xuefang Yan, Limei Xue, Wenming Li:
Weighted endpoint estimates for commutators of multilinear fractional integral operators

Yuan-e Zhao, Tingting Wang:
A note on the number of solutions of the generalized Ramanujan-Nagell equation $x^2-D=p^n$

Alexander Lomtatidze, Jiří Šremr:
On the Cauchy problem for linear hyperbolic functional-differential equations

Guang-Jun Zhang, Xiao-Dong Zhang:
The first Dirichlet eigenvalue of bicyclic graphs

Vincenzo de Filippis, Giovanni Scudo, Mohammad S. Tammam El-Sayiad:
An identity with generalized derivations on Lie ideals, right ideals and Banach algebras

Azam Babai, Behrooz Khosravi:
On the composition factors of a group with the same prime graph as $B_n(5)$

Khadijeh Jahedi, Bahmann Yousefi:
Numerical range of operators acting on Banach spaces

Xi Fu, Liulan Li, Xiantao Wang:
A characterization of Fuchsian groups acting on complex hyperbolic spaces

Yangjiang Wei, Jizhu Nan, Gaohua Tang:
Structure of cubic mapping graphs for the ring of Gaussian integers modulo $n$

Uzma Ahmad, Husnine Syed:
On the heights of power digraphs modulo $n$

Gui-Xian Tian, Ting-Zhu Huang:
Bounds for the (Laplacian) spectral radius of graphs with parameter $\alpha$