MATHEMATICAL SCIENCES  

1990 
Balasubramanian, Ramachandran (DOB: 15 March 1951), Sp: Number theory. The Institute of Mathematical Sciences, CIT Campus, Taramani, Chennai  600 113. Tel (044) 2351856 (O), 2453926 (R), Fax 2350586, Email : balu @ imsc.ernet.in Citation Prof. Balasubramanian has done significant work on analytic number theory. He is particularly known for a substantial improvement of a long standing result of E.C.Titchmarsh and his contributions in settling Waring's problem for fourth powers. 
1988  Banerjee, Mihir Baran (DOB: 29 March 1943), Sp: Hydrodynamic and Hydromagnetic stability. Department of Mathematics, Himachal Pradesh University, Shimla  171 005 Citation Prof. Banerjee has to his credit significant contributions on the theory of hydrodynamic and magnetohydrodynamic stability. He has done notable work on magnetoconvection and thermohaline convection. 
1995  Bhatia, Rajendra (DOB: 8 May 1952), Sp: Mathematical analysis; Linear Operators. Indian Statistical Institute, 7 SJS Sansanwal Marg, New Delhi  110 016. Tel (011) 664741 (O), 6867942 (R), Fax 6856779, Email : rbh @ isid1.isid.ac.in Citation Dr Bhatia obtained several sharp and powerful results in the perturbation theory of matrices, for introducing new techniques from differential geometry and Fourier analysis into numerical linear algebra and for formulation and proofs of operator versions of several classical inequalities. 
1959  Chandrasekharan, Komaravolu (DOB: 21 November 1920), Sp: Theory of equations of zeta functions. 8092, Zurich, Switzerland. Tel (+411) 6324199 (O), 3819686 (R) Citation Prof. Chandrasekharan's original contributions to the theory of functional equations of zetafunctions have earned him international repute. These researches are characterized by a combination of analytical and arithmetical methods of approach and belong to the classical tradition of analytical theory of numbers. 
1990  Dani, Shrikrishna Gopalrao (DOB: 3 June 1947), Sp: Ergodic theory;Dynamics; Lie groups; Probability measures on groups. Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai  400 005. Tel (022) 2152971 Extn. 2218 (O), 2151760 (R), Fax 2152110, 2152181, Email : dani@math.tifr.res.in Citation Dr Dani's contributions are in the field of ergodic theory in general and properties of orbits of Lie group actions on homogeneous spaces in particular. His work in the fields of dynamical systems, number theory and topology has made a notable impact. He and his collaborators have achieved important progress in respect of the problem of embedding an infinitely divisible probability distribution on a group in a continuous one parameter convolution semigroup. 
1981  Ghosh, Jayanta Kumar (DOB: 22 May 1937), Sp: Probability and Statistics. StatMath Division, Indian Statistical Institute, 203, Barrackpore Trunk Road, Calcutta  700 035. Tel (033) 526694, 4752071, Email : jkg @ www.isical.ernet.in Citation Prof. Ghosh has made significant contributions to theoretical statistics in several directions. He has extended the results of Fisher and Rao on the second order efficiency of maximum likelihood estimators. Using refined analytical tools he has obtained useful results in the asymptotic expansion of the distribution of sample statistics. In the matter of applications of probabilistic methods, he has made an excellent contribution to the understanding of sediment transport in fluid flows through stochastic models. Earlier, he had proved under very general conditions that in reducing a problem through sufficiency and invariance, the order in which these criteria are applied is immaterial. 
1972  Gupta, Anadi Sankar (DOB: 1 November 1932), Sp: Boundary layer theory; Hydrodynamics and hydromagnetic stability; Heat & Mass transfer in fluid flows. Department of Mathematics, Indian Institute of Technology, Kharagpur  721 302. Tel (03222) 4875 (O), Fax 55303, Email : shakti ! iit kgp ! sys 320 ! Citation Prof. Gupta has made significant contributions in the field of fluid dynamics and magnetohydrodynamics, notably on heat transfer in free convection flow in the presence of magnetic field. His work on the stability of a layer of rotating electrically conducting liquid in the presence of uniform magnetic field, oriented parallel to the axis of rotation is important, as it discusses the finite amplitude disturbances. 
1975  Jain, Padam Chand (DOB: 30 September 1930), Sp: Numerical solutions of partial differential equations. 3389, Sector D/3, Vasant Kunj, New Delhi 110 070. Tel (011) 6894048 (R) Citation Prof. Jain has done important work on the development of algorithms for solving nonlinear problems involving irregular boundaries. Algorithms based on finite difference technique, finite element technique and quasilinearization and invariant embedding have been developed and applied to various problems in fluid dynamics. These techniques have added to the existing knowledge on fluid dynamics and its applications and hold promise of enabling applied mathematicians and scientists to solve still more difficult nonlinear problems. His work is likely to be of value in finding solutions for problems of stability and turbulence in fluid dynamics, numerical weather forecasting and magnetohydrodynamic power generation. 
1993  Karmeshu (DOB: 30 May 1949), Sp: Mathematical modelling.School of Computer & Systems Sciences, Jawaharlal Nehru University, New Delhi  110 067. Tel (011) 6107676 Extn. 396 (O), 7273793 (R), Fax 6865886 Citation Dr Karmeshu has developed mathematical models for the dynamics of social and technical systems with special emphasis on their stochastic evolution. His contribution towards the understanding of the unity of structure and dynamics of diverse apparently unconnected systems is highly significant. 
1978  Krishnamurthy, Edayyathu Mangalam Venkatarama (DOB: 18 June 1934), Sp: Parallel & Distributed computing; Information systems design and Software design. Research School of Information Sciences and Engineering, Australian National University, Canberra ACT 0200, Australia. Tel (616)2798640 (O), 2497140 (R), Fax 2798651, Email : abk @ cslab.anu.edu.au; evk. krishnamurthy @ anu.edu.au Citation Prof. Krishnamurthy has made fundamental contributions to the design of errorfree arithmetic unit using padic numbers. The computer science research group headed by Prof. Krishnamurthy has developed new algebraic techniques for the reconstruction of threedimensional objects using twodimensional projections at different angles. He has developed a new computer language for storing and retrieving chemical information. Prof. Krishnamurthy has made significant contributions to the design of algorithms for computer vision, pattern and shape analysis. He has developed an algorithm for automatic phonetic transcription of Tamil in Roman script. 
1994  Kumar, Neithalath Mohan (DOB: 12 May 1951), Sp; Algebra; Algebraic Geometry. School of Mathematics, Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai  400 005. Tel (022) 2152971 (O), Fax 2152181, 2152110 Citation Dr Kumar has made profound and original contributions to commutative algebra and algebraic geometry. He is well known for his beautiful contribution settling the EisenbudEvans conjectures. Another piece of work that has received much acclaim, is his paper on Rational Double Points on Rational Surface. His recent work on complete intersection curves settles a question of great interest. 
1985  Malik, Surender Kumar (DOB: 8 September 1942), Sp: Applied mathematics; Nonlinear phenomena. CAS in Mathematics, Panjab University, Chandigarh  160 014. Tel (0172) 541132, 541441 Extn 1163,1183 (O), 742423 (R), Fax 541132, 541409, Email : staff % maths @ puniv.chd.nic.in; skm % maths@ puniv.chd.nic.in Citation Prof. Malik has done pioneering work on nonlinear dispersive waves in selfgravitating media, electrohydrodynamics and magnetohydrodynamics. In particular his theory on nonlinear breakup of a selfgravitating column throws light on the phenomenon of condensation in astronomical bodies. His work on nonlinear selffocussing in magnetic fluids if noteworthy and is likely to have industrial applications. 
1991  Mehta, Vikram Bhagvandas (DOB: 15 August 1946), Sp: Algebraic geometry; Vector bundles. School of Mathematics, Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai  400 005. Tel (022) 2152971 Extn 2282 (O), 3612725 (R), Fax 2152181, 2152110, Email : vikram @ math.tifr.res.in Citation Dr Mehta has made contributions to algebraic geometry, especially in problems related to homogeneous spaces of algebraic groups and the theory of vector bundles. The notion of Frobenius split varieties introduced by him and Dr Ramanathan has led to rapid developments in the study of Schubert varieties. 
1998  Nag, Subhashis (DOB: 14 August 1955), Sp: Complex analytical geometry moduli of Riemann surfaces; Mathematical physics (string theory). Institute of Mathematical Sciences, CIT Campus, Taramani, Chennai  600 113. Tel (044) 2352267, 2351856 (O), Fax 2350586, Email : nag @ imsc.ernet.in

1975  Narasimhan, Mudumbai Seshachalu (DOB: 7 June 1932), Sp: Analysis; Algebraic and Differential geometry. International Centre for Theoretical Physics, PO Box 586, 34100 Trieste, Italy. Tel (39040) 2240272 (O), 314264 (R), Fax 2240490, Email : narasim @ ictp.trieste.it

1987  Parimala, Raman (DOB: 21 November 1948), Sp: Algebra. School of Mathematics, Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai  400 005. Tel (022) 2152971 Extn 2392 (O), 2152853 (R), Fax 2152110, Email : parimala @ math.tifr.res.in

1976  Parthasarathy, Kalyanapuram Rangachari (DOB: 25 June 1936), Sp: Probability theory; Quantum stochastic calculus. Indian Statistical Institute, 7 SJS Sansanwal Marg, New Delhi  110 016. Tel (011) 664741 (O), 2494197 (R), Fax 6856779, Email : krp @ isid1.isid.ac.in

1985  Parthasarathy, Rajagopalan (DOB: 6 October 1945), Sp : Representation theory of Lie groups and algebras. School of Mathematics, Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai  400 005. Tel (022) 2152971 Extn 2246 (O) 2152762 (R), Fax 2152181, 2152110, Email : sarathy @ math.tifr.res.in

1986  Parthasarathy, Thiruvenkatachari (DOB: 1 March 1941), Sp: Game theory and mathematical programming. Indian Statistical Institute , 7 SJS Sansanwal Marg, New Delhi  110 016. Tel (011) 6514741 (O), 6868114 (R), Fax 6856779, Email : tps @ isid1.isid.ac.in

1983  Passi, Inder Bir Singh (DOB: 20 August 1939), Sp: Algebra.Centre for Advanced Study in Mathematics, Panjab University, Chandigarh  160 014. Tel ( 0172) 541156, 541441 Extn 1165 (O), 691283 (R), Fax 541132, Email : passi @ koel.imtech.ernet.in Citation Prof. Passi, a noted grouptheorist in India, has made significant contribution to certain aspects of theory of groups specially to the study of grouprings in which he ia leading expert. His results on the dimension subgroups, augmentation powers in grouprings, and related problems have received wide recognition. His 1979 monograph summarizing the state of the subject is a basic reference source. 
1982  Prakasa Rao, Bhagavatula Lakshmi Surya (DOB: 6 October 1942), Sp: Mathematical Statistics. Indian Statistical Institute , 7 SJS Sansanwal Marg, New Delhi  110 016. Tel (011) 6516200 (O), 6969748 (R), Fax 6856779, Email : blsp @ isid1.isid.ac.in Citation Prof. Prakasa Rao has made significant contributions on statistical inference in stochastic processes. In his earlier work, he had extended the BernsteinvonMises rates of convergence for independent variables to discrete parameter stationary Markov processes. He has developed the theory of large sample tests and estimation for general stochastic processes, and has investigated large sample properties of maximum probability, maximum likelihood and Bayes, estimates for diffusion processes. In recent years, Prof. Prakasa Rao has obtained significant results with regard to the asymptotic theory of statistical inference in stochastic processes and nonparametric density estimation. 
1989  Prasad, Gopal (DOB: 31 July 1945), Sp: Theory of Lie groups and Algebraic groups. Department of Mathematics, Michigan University, Ann Arbor, MI 48109, USA. Tel (+1734) 7640372 (O), 7618470 (R), Fax 7630937, Email : gprasad @ math.lsa.umich.edu Citation Prof. Prasad is a leading expert in the theory of algebraic groups and their arithmetic. Among his significant contributions are strong approximation for semisimple groups over function field, study of central extensions of padic and adelic groups and the computation of the covolume of all principal Sarithmetic subgroups. His work reveals his mastery over the most intricate aspects of arithmetic groups and has led to important developments in the field. 
1983  Prasad, Phoolan (DOB: 1 January 1944), Sp: Nonlinear wave; Partial differential equations; Fluid mechanics. Department of Mathematics, Indian Institute of Science, Bangalore  560 012. Tel (080) 3092264 /65/67 (O), 3371039 (R), Fax 3341683, 3342085, Email : prasad@math.iisc.ernet.in Citation Prof. Phoolan Prasad has done significant work in the area on nonlinear hyperbolic equations. He has succeeded in assessing the basic properties of the equations of various physical phenomena, generalized these mathematical properties and then used his theory to explain new results in the field of nonlinear waves. He has given the proof of the existence of a new type of wave on the interface of a clear liquid and a mixture in a sedimentation process; this has been confirmed by recent experiments. 
1977  Raghunathan, Madabusi Santanam (DOB: 11 August 1941), Sp: Algebraic groups; Lie groups and discrete subgroups. Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai  400 005. Tel (022) 2152971, 2188654 (O), 2152466 (R), Fax 2152181, 2152110, Email : msr@math.tifr.res.in Citation Prof. Raghunathan, an eminent mathematician, has been responsible in the past decade for advancements in the area of Lie groups, particularly discrete subgroups of Lie groups. In his earlier work he proved the rigidity of “nonuniform” arithmetic lattices connected with Selberg's conjecture. Later, he essentially solved Selberg's conjecture for nonuniform lattices before the complete solution of the conjecture by G.A. Margulis. Through his recent work he has made significant contributions to Serre's conjecture on the “Congruence Subgroup Problem” and generalisations of Quillen's solution of Serre's problem on vector bundles on the affine space. 
1979  Raghavan, Srinivasacharya (DOB: 11 April 1934), Sp: Number theory; Automorphic functions. A 1, Ashok Ganapathim, 25 Fourth Main Road, R A Puram, Chennai  600 028. Tel (044) 4364869 (R) Citation Prof. Raghavan has made significant contributions on number theory. His work on modular forms of several variables has been considered basic and extends in a nontrivial way the ideas of Hecke and Siegel. He has proved important results in analytic continuation of EisensteinSiegel series. His characterization of singular Siegel modular forms answers a long standing question of Maass. His work on Diophantine approximation is a significant improvement on the earlier work of Davenport and Heilbronn. 
1998  Ramadas, Trivandrum Ramakrishnan (DOB: 30 March 1955), Sp: Algebraic and Differential geometry; Mathematical physics.School of Mathematics, Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai  400 005. Tel (022) 2152971 (O), 2152882 (R), Fax 2152181, 2152110, Email : ramadas @ math.tifr.res.in Citation Dr Ramadas has made significant contributions to algebraic geometry and related models in mathematical physics. His contributions to generalised theta functions on moduli spaces of vector bundles and the Verlinde formula are very important. 
1979  Ramanan, Sundararaman (DOB: 20 July 1936), Sp: Algebraic geometry; Differential geometry. Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai  400 005. Tel (022) 2152971 Extn 2220 (O), 2152308 (R), Fax 2152110, Email : ramanan @ math.tifr.res.in Citation Prof. Ramanan has made significant contributions in differential geometry and algebraic geometry, some in collaboration with Prof. M S Narasimhan. In differential geometry, his work with Prof. Narasimhan proving the existence of universal connections has been of relevance in the context of YangMills theory in physics. In algebraic geometry, Prof. Ramanan's work concerns the study of the moduli space of vector bundles on an algebraic curve. The result that the moduli space of vector bundles on an algebraic curve has the same local deformation space as that of the curve, gives an elegant generalization of moduli spaces of vector bundles on a hyperelliptic curve and on the nonexistence of Poincare families for certain moduli varieties of vector bundles on curves has been widely acclaimed. 
1991  Ramanathan, Annamalai (DOB: 29 August 1946), Sp: Algebraic geometry. Expired. Citation Dr Ramanathan has made contributions to algebraic geometry. His joint work with Dr Mehta, where the notion of Frobenius split varieties was introduced, has led to the solution of a host of problems on Schubert varieties and related topics. He has also made important contribution to the study of stable principal bundles and related areas. 
1965  Ramanathan, K Gopala (DOB: 13 November 1920), Sp: Quadratic form; Modular functions and discontinuous groups work on Ramanujan's notes. Expired.

1959  Rao, Calympudi Radhakrishna (DOB: 10 September 1920), Sp: Mathematical statistics and its applications in biology. Department of Statistics, Penn State University, 326, Thomas Building, University Park, PA 16802, USA. Tel (814) 8653194 (O), 2346209 (R), Fax 8637114 (O); 2340372 (R), Email : crr1 @ psu.edu

1972  Seshadri, Conjeevaram Srirangachari (DOB: 29 February 1932), Sp: Algebraic geometry; Algebraic groups. SPIC Mathematical Institute, 92, G N Chetty Road, Chennai  600 017. Tel (044) 8284232, 8284251 (O), 4951198 (R), Fax 8256842, Email : css @ smi.ernet.in

1992  Sharan, Maithili (DOB: 4 January 1953), Sp : Mathematical Modelling; Biofluid Mechanics. Centre for Atmospheric Sciences, Indian Institute of Technology, New Delhi  110 016. Tel (011) 6861977 Extn. 6024 (O), 6515480 (R), Fax 6862037, Email : mathilis @ cas.iitd.ernet.in

1987  Shorey, Tarlok Nath (DOB: 30 October 1945), Sp: Theory of numbers. School of Mathematics, Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai  400 005. Tel (022) 2152971 Extn 2222 (O), 2151802 (R), Fax 2152110, Email : shorey @ math.tifr.res.in

1982  Shukla, Jang Bahadur (DOB: 13 January 1937), Sp: Mathematical modelling of ecological environmental physiological and engineering systems. Department of Mathematics, Indian Institute of Technology, Kanpur  208 016.

1993  Singhi, Navinkumar Madhavprasad (DOB: 19 March 1949), Sp: Combinatorial mathematics. School of Mathematics, Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai  400 005. Tel (022) 2152971 Extn 2590 (O), 2151814 (R), Fax 2152110, Email : singhi @ tifr.res.in

1988  Sinha, Kalyan Bidhan (DOB: 3 June 1944), Sp: Mathematical theory of scattering and spectral theory of Schrodinger operators; algebra of operators; Quantum stochastic process. Indian Statistical Institute, 7, SJS Sansanwal Marg, New Delhi  110 016. Tel (011) 6516200 (O), 6512086 (R), Fax 6856779, Email : kbs @ isid1.isid.ernet.in

1980  Sridharan, Ramaiyengar (DOB: 4 July 1935), Sp: Algebra.School of Mathematics, Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai  400 005. Tel (022) 2152971 Extn 2217 (O), 2152131 (R), Fax 2152110, Email : sridhar @ math.tifr.res.in

1996  Sunder, Vaikalathur Shankar (DOB: 6 April 1952), Sp: Subfactors; Operator algebra. Institute of Mathematical Sciences, CIT Campus, Taramani, Chennai  600 113. Tel (044) 2351856 (O), 8583343 (R), Fax 2350586, Email : sunder @ imsc.ernet.in

1986  Tewari, Udai Bhan (DOB: 18 June 1944), Sp: Abstract harmonic analysis. Department of Mathematics, Indian Institute of Technology, Kanpur  208 016. Tel (0512) 597500 (O), Fax 597500, Email : ubtewari @ iitk.ernet.in

1976  Trehan, Surindar Kumar (DOB: 4 April 1931), Sp: Nonlinear stability in magnetohydrodynamics. Department of Mathematics, Punjab University, Chandigarh  160 014. Tel (0172) 742683 (R)
