Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Phillip A. Ostrand"'
Autor:
Phillip A. Ostrand
Publikováno v:
Linear and Multilinear Algebra. 2:25-38
The cutting number of a point of a connected graph is a measure of the extent to which the removal of that point cuts the graph. The cutting center of the graph is the set of points of maximal cutting number. In an earlier paper [1] all possible stru
Publikováno v:
Fundamenta Mathematicae. 125:125-131
Publikováno v:
Discrete Mathematics. 32:99-103
This study explores the structure of graphs which together with their complements are edge symmetric.
Autor:
Phillip A. Ostrand, Charles A. Akemann
Publikováno v:
Journal of the London Mathematical Society. :525-530
Publikováno v:
Fundamenta Mathematicae. 122:1-21
Autor:
Phillip A. Ostrand
Publikováno v:
Bulletin of the American Mathematical Society. 71:619-622
Autor:
Phillip A. Ostrand
Publikováno v:
General Topology and its Applications. 1:209-221
In the usual development of dimension theory in metric spaces, the equivalence of covering and large inductive dimension plays a central role. In this paper we develope the basic theory of dimension directly from the notion of covering dimension. Sev
Autor:
Phillip A. Ostrand
Publikováno v:
Journal of Mathematical Analysis and Applications. 40:207-213
We present an elementary proof of a transfinite symmetric form of Philip Hall's theorem on systems of distinct representatives and derive some wellknown mapping theorems from it to illustrate the ease with which this form of the theorem may be used.
Autor:
Phillip A. Ostrand
Publikováno v:
Journal of Mathematical Analysis and Applications. 32(1):1-4
Autor:
Phillip A. Ostrand
Publikováno v:
Discrete Mathematics. (1):71-75
The radius and diameter of a graph are known to satisfy the relation rad G ≤ diam G ≤ 2 rad G. We show that this is the only restriction on these parameters and construct all non-isomorphic graphs of minimal order having a specified radius and di