Results 121 to 130 of about 219,967 (286)

A Class of ‘n’ Distant Graceful Trees [PDF]

open access: yes, 2011
In this paper we show that a tree T with the following properties have graceful labeling. 1) T has a path H such that every pendant vertex of T has distance n (a fixed positive integer) from H.
Panda, Amaresh Chandra   +2 more
core   +1 more source

On the Number of α-Labeled Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2018
When a graceful labeling of a bipartite graph places the smaller labels in one of the stable sets of the graph, it becomes an α-labeling. This is the most restrictive type of difference-vertex labeling and it is located at the very core of this research ...
Barrientos Christian, Minion Sarah
doaj   +1 more source

On $k$-Super Graceful Labeling of Graphs

open access: yes, 2018
Let $G=(V(G),E(G))$ be a simple, finite and undirected graph of order $p$ and size $q$. For $k\ge 1$, a bijection $f: V(G)\cup E(G) \to \{k, k+1, k+2, \ldots, k+p+q-1\}$ such that $f(uv)= |f(u) - f(v)|$ for every edge $uv\in E(G)$ is said to be a $k$-super graceful labeling of $G$.
Lau, Gee-Choon   +2 more
openaire   +3 more sources

Graceful and residually graceful graphs

open access: yes, 2006
Graph labeling is an assignment of integers to the vertices and/or edges of a graph, subject to certain conditions. The first type of labeling was introduced by Rosa as early as 1967. It is called -valuation and, more popularly known as graceful labeling
Tan, Michele Go
core  

Two families of graceful cacti [PDF]

open access: yes
We present a graceful labeling for each member of a subfamily of quadrangular cacti whose underlying graph correspond to the subclass of rooted binary trees where every level has at most two vertices.
Barrientos, Christian
core   +1 more source

Vertex graceful labeling of some classes of graphs

open access: yes, 2018
A connected graph G = (V, E) of order atleast two, with order p and size q is called vertex-graceful if there exists a bijection f : V → {1, 2, 3, ··· p} such that the induced function f * : E → {0, 1, 2, ··· q - 1} defined by f * (uv) = (f(u) + f(v ...
Balaganesan, P., Santhakumaran, A. P.
core   +1 more source

Random Generation Topology Coding Technique in Asymmetric Topology Encryption

open access: yesMathematics
The security of traditional public key cryptography algorithms depends on the difficulty of the underlying mathematical problems. Asymmetric topological encryption is a graph-dependent encryption algorithm produced to resist attacks by quantum computers ...
Jing Su, Bing Yao
doaj   +1 more source

Super Fibonacci Graceful Labeling

open access: yes, 2014
: A Smarandache-Fibonacci Triple is a sequence S(n), n ≥ 0 such that S(n) = S(n−1)+S(n−2), where S(n) is the Smarandache function for integers n ≥ 0. Certainly, it is a generalization of Fibonacci sequence.
S. Navaneethakrishnan   +2 more
core  

A critical reappraisal of the carotid sinus and carotid bulb: Distinguishing neurohistological function from vascular geometry

open access: yesThe Anatomical Record, EarlyView.
This review redefines the carotid bulb (CB) as a variable geometric dilation shaped by hemodynamics and the carotid sinus (CS) as a conserved neurohistological baroreceptor field. Distinguishing these entities clarifies a century of anatomical confusion and links geometry, neurohistology, and clinical interpretation within a unified framework ...
Răzvan Costin Tudose   +2 more
wiley   +1 more source

Distribution of doublecortin in the developing retina of birds: A comparative analysis

open access: yesThe Anatomical Record, EarlyView.
Abstract The avian retina presents an elegant and highly accessible model for investigating the spatial and temporal dynamics of neurogenesis within the central nervous system. In recent years, the microtubule cytoskeleton has emerged not merely as a structural scaffold, but as a dynamic regulator of the transition of a morphologically homogeneous pool
Javier Francisco‐Morcillo   +5 more
wiley   +1 more source

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