Combinatorial Matrix Theory; Spectral Graph Theory; Chemical Graph Theory

“1. Sasmita Barik and Piyush Verma, Bounds for the smallest positive eigenvalue of unicyclic graphs with diameter at most 4, Discrete Mathematics, 348(11):114574, (2025). DOI: 10.1016/j.disc.2025.114574

2. Sasmita Barik and Piyush Verma, On spectral properties of neighbourhood second Zagreb matrix of graphs, Communications in Combinatorics and Optimization, 10(2):275–293, (2025). DOI: 10.22049/CCO.2023.28424.1546

3. Sasmita Barik and Piyush Verma, On the neighborhood first Zagreb spectral radius and the neighborhood first Zagreb energy of graphs, AKCE International Journal of Graphs and Combinatorics, Accepted, (2024).

4. Sasmita Barik and Piyush Verma, On spectral properties of token graphs, Linear Algebra and its Applications, 687:181–206, (2024). DOI: 10.1016/j.laa.2024.02.004 ”

“1. Laplacian spectral properties of token graphs, The 26th Conference of the International Linear Algebra Society (ILAS 2025), National Yan-san University, Kaohsiung, Taiwan, June 23-27, (2025). https://ilas2025.tw/

2. Spectral properties of token graphs, Special Western Canadian Linear Algebra Meeting Honouring Professor Peter Lancaster at 95, University of Calgary, Canada, May 25-26, (2024). https://uregina.ca/~sfallat/wclam24

3. On neighborhood second Zagreb matrix of graphs, International Conference on Linear Algebra and its Application (ICLAA-2023), Department of Mathematics, Manipal Institute of Technology, India, December 18-21, (2023). https://carams.in/events/iclaa2023/”