Three characterizations of quasi-median graphs are proved, for instance, they are partial Hamming graphs without convex house and convexQ 3 such that certain relations on their edge sets coincide. Expansion procedures, weakly 2-convexity, and several relations on the edge set of a graph are essential for these results. Quasisemimedian graphs are characterized which yields an additional characte...

and Applied Analysis 3 d The function T t : tQ′ t Q t , t / 0, 1.9 is quasi-decreasing in a, 0 and quasi-increasing in 0, b , respectively. Moreover T t ≥ Λ > 1, t ∈ I \ {0}. 1.10 e There exists 0 ∈ 0, 1 such that, for y ∈ I \ {0}, T ( y ) ∼ T ( y [ 1 − 0 T ( y ) ]) . 1.11 Then we write W ∈ F. f In addition, assume that there exist C, 1 > 0 such that, for all x ∈ I \ {0}, ∫x x− 1|x|/T x |Q′ t −...

In this paper, L-convex ?*-remotehood system is introduced and some characterizations of both L-convexity remotehood are obtained. Further, ?*-remote mapping presented its properties investigated. Based on this, quasi-uniformity quasiuniformity preserving introduced. It proved that quasi-uniform space Lconvex mutually induced. addition, the category spaces can be embedded into spaces.

In this paper, we present a geometric construction of control meshes of helicoids over trapezium domain. We first introduce the quasi-Bézier basis in the space spanned by {1, t, cos t, sin t, t sin t, t cos t}, with t ∈ [0, α], α ∈ [0, 2π). We denote the curves expressed by the quasi-Bézier basis as algebraic-trigonometric Bézier curves, for short ATBézier curves. Then we find out the transform...

In 1930 Berger2 reported that visual stimulation by opening of the eyes in a lighted room blocked the occipital brain waves, while opening of the eyes in a dark room did not alter the occipital rhythm. The effect of visual stimulation on the so-called alpha rhythm was subsequently described by many authors, including Adrian and Matthews,' Fischer,4 Gibbs and Gibbs,5 Golla, Hutton, and Walter,7 ...

In this paper, a recently suggested general procedure which leads to an eigenvahre eqnation for apertnre problems is specialized to the range of frequencies for which the maximnm linear dimension of the aperture [ is much smaller than the wavelengths, known as the Rayleigh region. As kl asymptotically approaches zero, we arrive at a set of two eigenvahre equations which aided by the edge condit...