A Disappearing Number is a magical play that takes as its starting point the story of the most mysterious and romantic mathematical collaborations of all time - that of our very own mathematical genius Srinivas Ramnujan and his English counterpart and mentor, G H Hardy. A pattern of stories links people across time and space - Ramanujan to Hardy, a contemporary mathematician to Ramanujan, a businessman to this mathematician, an Indian diaspora traveling freely across the globe. A fluid, ever changing theatrical pattern reflects the complex mathematical patterns that fascinated Ramanujan and Hardy, and mathematicians down the ages. Threaded through this pattern of stories and ideas are questions. About mathematics and beauty; imagination and the nature of infinity; about what is continuous and what permanent; how we are attached to the past and how we affect the future; how we create and how we love. We are all looking. The question is who can see.