2019 THANGADURAI, Ravindranathan (b. 1969) DPhil, Professor H, Harish Chandra Research Institute, Chhatnag Road, Jhunsi, Prayagraj – 211019; Res. Shravasti, Harish Chandra Research Institute, Chhatnag Road, Jhunsi, Prayagraj – 211019; Tel: (0532) 2274313(O), 2274038(R), 06394383636(M); Email: ; Sp. Combinatorial Number Theory/Transcendental Number Theory.