Articles

SUBSETTING AND IDENTIFICATION OF OPTIMAL MODELS IN GENERALIZED BILINEAR TIME SERIES MODELLING

Significant efforts have been made to study the theory of bilinear time series models, especially simple bilinear (BL) models.

J. F. OJO
D. K. SHANGODOYIN

QUASI b¡OPEN AND STRONGLY b¡OPEN FUNCTIONS

In this paper we introduce b ¡ open, b ¡ closed, quasi b ¡ open, quasi b ¡ closed, strongly b ¡ open and strongly b ¡ closed functions and investigate properties and characterizations of these new types of functions.

JAMAL M. MUSTAFA

ON FRACTIONAL DIFFERENTIABLE s–CONVEX FUNCTIONS

In this paper some properties of s–convex functions are considered. A combination between local fractional ®–derivative and s–convexity are introduced and investigated.

M. ALOMARI
M. DARUS
S.S. DRAGOMIR 
U.S. KIRMACI  

ON 2-¸-NUCLEARITY MAPS

In this paper we give an answer for the following problem: Is 2-quasi- ¸(P)-nuclear maps between normed spaces equivalent to quasi-¸(P)-nuclear maps for a non nuclear G1-space ¸(P)? [3]. 

W. SHATANAWI
Z. MUSTAFA
M. BATAINEH

LIPSCHITZ ESTIMATES FOR COMMUTATORS OF SINGULAR INTEGRAL OPERATORS ON WEIGHTED HERZ SPACES

In this paper, we establish the boundedness of commutators generated by weighted Lipschitz functions and Calder´on-Zygmund singular integral operators on weighted Herz spaces.

YAN LIN
ZONGGUANG LIU
MINGMING SONG