Sameer
Chavan

View of Kanpur from the river Ganga: from a painting by Rev. Henry
Martyn


Publications:
On a Friedrichs Extension Related to Unbounded SubnormalsI (with A. Athavale), Glasgow Math J, 48 (2006), 1928
Sectorial Forms and Unbounded Subnormals (with A. Athavale), Math Proc Cambridge Phil Soc, 143 (2007), 685702
On Operators Cauchy Dual to 2hyperexpansive Operators, Proc Edinburgh Math Soc, 50 (2007), 637652
On Operators Close to Isometries, Studia Math, 186 (2008), 275293
On a Friedrichs Extension Related to Unbounded SubnormalsII, Glasgow Math J, 50 (2008), 97109
A Spectral Exclusion Principle for Unbounded Subnormals, Proc Amer Math Soc, 137 (2009), 211218
Coanalytic, right invertible operators are supercyclic, Colloquium Math, 119 (2010), 137142
On Operators Cauchy Dual to 2hyperexpansive Operators: The Unbounded Case, Studia Math, 203 (2011), 129162
Essential Normality of Operators Close to Isometries, Integral Equations Operator Theory, 73 (2012), 4955
Operators Cauchy Dual to 2hyperexpansive Operators: The Multivariable Case (With R. Curto), Integral Equations Operator Theory, 73 (2012), 481516
C*algebras Generated by Spherical Hyperexpansions, New York Jour of Math, 19 (2013), 511531
Rigidity Theorems for Spherical Hyperexpansions (With V. M. Sholapurkar), Complex Analysis and Operator Theory, 7 (2013), 15451568
An Inequality for Spherical Cauchy Dual Tuples, Colloquium Math, 131 (2013), 265271
Spherically Balanced Hilbert Spaces of Formal Power Series in Several VariablesI (With S. Kumar), Journal of Operator Theory, 72 (2014), 405428
Irreducible Tuples without Boundary Property, Canadian Mathematical Bulletin, 58 (2015), 918
Spherical Tuples of Hilbert Space Operators (With D. Yakubovich), Indiana University Mathematics Journal, 64 (2015), 577612
Completely Monotone Functions of Finite Order and Agler’s Conditions (With V. M. Sholapurkar), Studia Math, 226 (2015), 229258
A Woldtype Decomposition for a Class of Row nuhypercontractions (With R. Kumari), Journal of Operator Theory, 75 (2016), 195208
An Analytic Model for Leftinvertible Weighted Shifts on Directed Trees (With S. Trivedi), Journal of London Mathematical Society, 94 (2016), 253279
Uinvariant Kernels, Defect Operators, and Graded Submodules (With R. Kumari), New York Jour of Math, 22 (2016), 677709
Completely Hyperexpansive Tuples of Finite Order (With V. M. Sholapurkar), Journal Math Anal Appl, 447 (2017), 10091026
A Moment Problem and Joint qisometry Tuples (With A. Anand), Complex Analysis and Operator Theory, 11 (2017), 785810
Module Tensor Product of Subnormal Modules need not be Subnormal (With A. Anand), Journal of Functional Analysis, 272 (2017), 47524761
Weyl's Theorem for a Pair of Commuting Hyponormal Operators (With R. Curto), Proc Amer Math Soc, 145 (2017), 33693375
Dirichlet Spaces Associated with Locally Finite Rooted Directed Trees (With D. Pradhan and S. Trivedi), Integral Equations Operator Theory, 89 (2017), 209232
Multishifts on Directed Cartesian Product of Rooted Directed Trees (With D. Pradhan and S. Trivedi), Dissertationes Mathematicae, 527 (2017), 1102
An operatorvalued kernel associated with a commuting tuple of Hilbert space operators, Bulletin Sci. Math.145 (2018), 3852
Commutants and reflexivity of multiplication tuples on vectorvalued reproducing kernel Hilbert spaces (With S. Podder and S. Trivedi), Journal Math Anal Appl, 466 (2018), 13371358
Classification of DruryArvesontype Hilbert modules associated with certain directed graphs (With D. Pradhan and S. Trivedi), J. Operator Theory 81 (2019), no. 1, 21–60
Complete systems of unitary invariants for some classes of 2isometries, (With A. Anand, Z. Jablonski, and J. Stochel), Banach J. Math. Anal. 13 (2019), no. 2, 359–385
A solution to the Cauchy dual subnormality problem for 2isometries (With A. Anand, Z. Jablonski, and J. Stochel), J. Funct. Anal. 277 (2019), no. 12, 108292, pp 51
Essential Spherical Isometries, Acta Sci Szged, 85(2019), 589594
Analytic misometries without the wandering subspace property (with A.Anand and S. Trivedi), Proc Amer Math Soc, 148 (2020), 2129–2142
The Cauchy dual subnormality problem for cyclic 2isometries (With A. Anand, Z. Jablonski, and J. Stochel), Adv. Oper. Theory 5 (2020), 1061–1077.
Taylor spectrum approach to Browniantype operators with quasinormal entry (with Z. J. Jabłoński, I. B. Jung, J. Stochel), Annali di Matematica Puraed Applicata, to appear
Dirichlettype spaces on the unit ball and joint 2isometries (with R. Gupta and Md. R. Reza), Journal of Functional Analysis, to appear
Notes on the Brown, Douglas and Fillmore theorem (with G. Misra), IIScCambridge Lectures Notes Series (ICLNS), to appear
Preprints:
Weighted join operators on directed trees (with R. Gupta and K. B. Sinha), preprint, 2018
Spherical symmetry of some unitary invariants for commuting tuples (with K. Feki), preprint, 2020
Present Graduate Students:
Chaman Sahu, IIT Kanpur, 2019
Rajkamal Nailwal, IIT Kanpur, 2019 (jointly with Akash Anand)
Past Graduate Students:
Surjit Kumar, Spherically Balanced Hilbert Spaces of Formal Power Series in Several Variables, IIT Kanpur, 2015 Rani Kumari, Uinvariant Kernels, Row nuHypercontractions, And Graded Submodules, IIT Kanpur, 2016 Deepak Kumar Pradhan, Multishifts on Directed Cartesian Product of Rooted Directed Trees, IIT Kanpur Post Doctoral Students: Shailesh Trivedi, SERB, National Postdoctoral Fellow, 20172018
Rajeev Gupta, SERB, National Postdoctoral Fellow, 20162018
Md. Ramiz Reza, Institute Postdoctoral Fellow, 2019
Soumitra Ghara, SERB, National Postdoctoral Fellow, 2020
Lecture Notes:
Linear Dynamics, 2012 Notes on Group Theory and Ring Theory, 2013 Topology: Notes and Problems, 2014 Spectral Theorem for Symmetric Operators with Compact Resolvent, 2014
Uniform Convergence and Polynomial Approximation: Problems and Notes, 2014
Integration Theory: Notes and Problems, 2014/2015
FubiniTonelli Theorem: Notes and Problems, 2015
Problems
in Complex Analysis, 2015
Introduction
to Complex Analysis, 2016
Literary
Marathi Magazine:
समकालीन
गझल,
अंक
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सप्टेंबर
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समकालीन
गझल,
अंक
२,
जुलै
२०१७