4 papers
An Epidemic Compartment Model for Economic Policy Directions for Managing Future Pandemic
Zachariah Sinkala, Vajira Manathunga, Bichaka Fayissa
In this research, we develop a framework to analyze the interaction between the economy and the Covid-19 pandemic using an extension of SIR epidemic model. At the outset, we assume…
The coefficients of the Jones polynomial
Vajira Manathunga
It has been known that, the coefficients of the series expansion of the Jones polynomial evaluated at are rational valued Vassiliev invariants . In this article, we calculate…
An Alternative Approach to Evaluate American Options Price Using HJM Approach
Kushantha Fernando, Vajira Manathunga
Developments in finance industry and academic research has led to innovative financial products. This paper presents an alternative approach to price American options. Our approach…
The Conway Polynomial and Amphicheiral Knots
James Conant, Vajira Manathunga
According to work of Hartley and Kawauchi in 1979 and 1980, the Conway Polynomial of all negative amphicheiral knots and strongly positive amphicheiral knots factors as …