• Matrix Theory, Generalized Inverses, Linear Complementarity Problems

• MA303-Functional Analysis (Fall 2023) MA423-Data Structures and Programming (Fall 2023)

• Assistant Professor – IIT Patna – July 2023 to till date Assistant Professor – BITS Pilani – April to June 2023 Assistant Professor – VIT Chennai – June 2022 to March 2023 Assistant Professor (Adhoc) - NIT Andhra Pradesh – July 2021 to May 2022 Institute Post-Doctoral Fellow, IIT Madras – April to July 2021

• Awarded the Institute Blues Certificate by IIT Madras for outstanding performance in Sports, Co-curricular and Organizational Activities (2021). Awarded Institute Post-Doctoral Equivalent Fellowship by IIT Madras (2021). Received the second prize in “3-Minute Thesis Competition” held at the Department of Mathematics and Statistics, Washington State University (2019). Awarded INSPIRE Fellowship by DST, GoI (2016). Awarded the Regis Gold Medal for being the university topper in M. Sc. (2016). Cleared CSIR-NET (Mathematics) (AIR 86) and hence received CSIR-JRF (2016). Cleared GATE 2016 (AIR 19) in Mathematics. Awarded INSPIRE Scholarship for securing a rank in the top 1% of students in Higher Secondary Board Exams (2011).

• • Sivakumar, K. C., Sushmitha, P., and Tsatsomeros, M. J., Q_# and Q\dag-matrices: Two Extensions of the Q-matrix concept, Linear and Multilinear Algebra, 70, 6947-6964 (2022).
   
  • Sivakumar, K. C., Sushmitha, P., and Wendler, M., Karamardian Matrices : An analogue of Q-matrices, Electron. J. Linear Algebra 37, 127-155 (2021).
   
  • Choudhury, P. N., Eagambaram, N., Sivakumar, K. C., and Sushmitha, P., On the matrix class Q₀ and inverse monotonicity properties of bordered matrices, Linear Algebra Appl., 612, 206-222 (2020).
   
  • McDonald, J. J., Nandi, R., Sivakumar, K. C., Sushmitha, P., Tsatsomeros, M. J., Wendler, E., and Wendler, M., M-matrix and inverse M-matrix extensions, Special Matrices, 8(1), 186-203 (2020).
   
  • Murthy, G. S. R., Sivakumar, K. C. and Sushmitha, P., T. Parthasarathy's contributions to complementarity problems: a survey. Ann Oper Res., 287, 867–894 (2020).