He is a specialist in metaphysics and Indo-Tibetan philosophy. In particular, his research focuses on the philosophy of the early Indian Mahāyāna Buddhist thinker, Nāgārjuna, with comprehensive books such as Nagarjuna's Madhyamaka. His research interests also include the history of ideas in the sixteenth and seventeenth centuries. His most recent research interests focus on the history of solipsism.[7]
Selected works
Books
The Non-Existence of the Real World. (Oxford University Press, 2020, 384 pp., ISBN9780198847915)
Westerhoff, Jan (2007). "The Madhyamaka Concept of Svabhāva: Ontological and Cognitive Aspects". Asian Philosophy. 17: 17–45. doi:10.1080/09552360701201122. S2CID143804698.
Westerhoff, Jan (2004). "The Construction of Ontological Categories". Australasian Journal of Philosophy. 82 (4): 595–620. doi:10.1080/713659902. S2CID170787660.
Westerhoff, Jan C. (2001). "A World of Signs: Baroque Pansemioticism, the Polyhistor and the Early Modern Wunderkammer". Journal of the History of Ideas. 62 (4): 633–650. doi:10.1353/jhi.2001.0041. S2CID170210097.
Westerhoff, Jan C. (1999). "Poeta Calculans: Harsdorffer, Leibniz, and the mathesis universalis". Journal of the History of Ideas. 60 (3): 449–467. doi:10.1353/jhi.1999.0031. S2CID170774562.