As part of its celebrations of World Logic Day, the Association for Logic in India (ALI) conducted an online lecture by Prof. Shashi Mohan Srivastava on January 16, 2025.

Lecture Details

Speaker: Prof. Shashi Mohan Srivastava, IACS Kolkata and RKMVERI Belur, India
Title: Recalling Vaught’s Conjecture
Date: January 16, 2025
Time: 18:00 IST
Abstract: Vaught’s conjecture states that the countable models of a countable first-order theory, up to isomorphism, are either countably many or continuum many. This problem is still open, and it seems not much activity has been going on on it.

Speaker Bio

Prof. Shashi Mohan Srivastava is an Emeritus Professor at the Statistics and Mathematics Unit, Indian Statistical Institute (ISI), Kolkata, India, which he joined in 1980. He is also a Visiting Professor at the Indian Association for the Cultivation of Science (IACS), Kolkata, and the Ramakrishna Mission Vivekananda Educational and Research Institute (RKMVERI) Belur, Kolkata.

He graduated from ISI Kolkata in 1980 under the supervision of Prof. A. Maitra, and was a member of the Institute for Advanced Studies, Princeton, during the academic year 1979–1980.

Prof. Srivastava’s primary research interest lies in descriptive set theory. He is the recipient of the Indian National Science Academy medal for young scientists, and is the author of the books A Course on Borel Sets and A Course on Mathematical Logic, both published by Springer. He is an enthusiastic teacher and has written several expository articles aimed at popularizing mathematical logic and set theory in India.