Arshak Petrosyan

Arshak Petrosyan is a Professor of Mathematics and Associate Department Head at Purdue University, working in analysis, partial differential equations, and free boundary problems. He earned his PhD at the Royal Institute of Technology (KTH) in Stockholm in 2000 under Henrik Shahgholian and a Diploma from Yerevan State University in 1997 under Norayr Arakelian, then held an R. H. Bing instructorship at UT Austin (mentored by Luis Caffarelli) before joining Purdue in 2003. He is co-author of the AMS graduate text 'Regularity of free boundaries in obstacle-type problems' (2012) and the AMS Memoir on the parabolic Signorini problem (2017), and has written extensively on the thin obstacle problem and nonlocal/fractional operators. As a high-school student he represented the Commonwealth of Independent States at the 33rd IMO (Moscow, 1992), earning an Honourable Mention.

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• Represented the Commonwealth of Independent States at the 33rd IMO (Moscow, 1992), scoring 170 points for an Honourable Mention.Jul 1992
• Co-authored the AMS Graduate Studies text 'Regularity of free boundaries in obstacle-type problems' (2012) with H. Shahgholian and N. Uraltseva, a standard reference in the field.2012
• Earned his PhD at KTH Stockholm in 2000 under Henrik Shahgholian and a Diploma at Yerevan State University in 1997 under Norayr Arakelian, a lineage in the Armenian/St Petersburg free-boundary school.2000
• Co-wrote the Notices of the AMS memorial article on Nina Nikolaevna Uraltseva (2022) with D. Apushkinskaya and H. Shahgholian.2022
• Associate Department Head of Purdue Mathematics since July 2021, alongside a full professorship held since 2012.Jul 2021
• Public contact details published on his Purdue page: [contact omitted] and office phone [private detail omitted].