12 papers
Fano Generalized Bott-Samelson Varieties
Narasimha Chary Bonala, Santosha Pattanayak, Yogendra Singh
The Bott-Samelson varieties provide natural desingularizations of Schubert varieties, and their generalizations, called generalized Bott-Samelson varieties, were constructed by Nic…
Characterisations of finite groups with exponent via their power graphs
Aditya Singh, Anmol chugh, Yogendra Singh +1
The power graph of a finite group is the graph with vertex set and edge set $E(P(G))=\{uv:\ u,v \in G,\ u \neq v,\ u \in \langle v \rangle \ \text{or}\ v \in \langle…
The Gromov width of generalized Bott-Samelson manifolds
Narasimha Chary Bonala, Yogendra Singh
We study the Gromov width of smooth generalized Bott-Samelson varieties, a class of projective varieties constructed by Perrin in \cite{Per07} as a generalization of classical Bott…
Spectral Properties of Power Graphs of Metacyclic Groups
Aditya Singh, Yogendra Singh, Anand Kumar Tiwari
For a group , the associated power graph is defined as the graph whose vertices are the elements of , with two distinct vertices being adjacent if either $u…
-Spectra of Joined Union Graphs with Applications to Power Graphs of Finite Groups
Aditya Singh, Yogendra Singh, Anand Kumar Tiwari
The \emph{generalized reciprocal distance matrix} of a graph , denoted by , is defined as $RD_α(\mathscr{G})=α\,RT_r(\mathscr{G})+(1-α)\,RD(\mathscr…
Hosoya properties of power graphs over certain groups
Yogendra Singh, Anand Kumar Tiwari, Fawad Ali
The power graph denoted by of a finite group is a graph with vertex set and there is an edge between two distinct elements $u…
On the and matrices over certain groups
Yogendra Singh, Anand Kumar Tiwari, Fawad Ali
The power graph of a finite group is a graph with the vertex set and two vertices form an edge if and only if one is an integral power of the other.…
On the Spectral properties of power graphs over certain groups
Yogendra Singh, Anand Kumar Tiwari, Fawad Ali
The power graph of a group is a graph with the vertex set such that two distinct vertices form an edge if and only if one of them is an integral power of the other.…
On the power graph of a certain gyrogroup
Yogendra Singh, Anand Kumar Tiwari, Fawad Ali +1
The power graph of a group is a simple graph with the vertex set such that two distinct vertices are adjacent in if and only if or $v^m…
2-semi-equivelar maps on the torus and Klein bottle with few vertices
Anand Kumar Tiwari, Yogendra Singh, Amit Tripathi
The -semi equivelar maps, for , are generalizations of maps on the surfaces of Johnson solids to closed surfaces other than the 2-sphere. In the present study, we dete…
Hamiltonicity of doubly semi-equivelar maps on the torus
Yogendra Singh, Anand Kumar Tiwari, Seema Kushwaha
The well-known twenty types of 2-uniform tilings of the plane give rise infinitely many doubly semi-equivelar maps on the torus. In this article, we show that every such doubly sem…
Some doubly semi-equivelar maps on the plane and the torus
Yogendra Singh, Anand Kumar Tiwari
A vertex in a map has the face-sequence , if there are numbers of -gons incident at in the given cyclic order, for $1 \leq i…