Home | School of Sciences

Dr. KURMAYYA TAMMINANA

ABOUT

NAME: Dr. KURMAYYA TAMMINANA

MS: M.Sc. - University of Hyderabad

E- MAIL: kurmayyat@nitandhra.ac.in

POSITION: Associate Professor

PhD: Indian Institute of Technology Madras

PHONE: +91 9951150492

AREAS OF INTEREST: Linear Algebra; Functional Analysis

EXTERNAL LINK: https://scholar.google.com/citations?hl=en&user=7Q1nRgQAAAAJ

BRIEF

Introduction:

Welcome to my webpage! I was born in a small village called Cheepurupalli in Srikakulam district, Andhra Pradesh. I completed my schooling at APR School SM Puram, and pursued my Intermediate education at GJ College, Palasa. From a young age, I have been passionate about mathematics, which led me to pursue a career in this field. I enjoy teaching and am committed to doing quality research in Linear Algebra and Functional Analysis.

Research Areas :

Linear Algebra, Functional Analysis

Educational Qualifications:

1. Ph.D. (January 2004- July 2008): Indian Institute of Technology Madras. Thesis title: Nonnegative Moore-Penrose Inverses of Operators between Hilbert Spaces. Supervisor: Prof. K.C. Sivakumar.

2. M.Sc. (2000-2002): University of Hyderabad. Specialization: Pure Mathematics

3. B.Sc. (1997-2000): Silver Jubilee Government Degree College, Kurnool, S.K. University.

Professional Experience:

6. Associate Professor (11th December, 2019 - Till date): School of Sciences, NIT Andhra Pradesh, Tadepalligudem.

5. Assistant Professor Grade-I (18th May, 2012 - 10th December, 2019): Department of Mathematics, NIT Warangal.

4. Assistant Professor Grade-I (September 2008 - May 2012): Department of Mathematics, BITS Pilani Hyderabad campus.

3. Lecturer (Jan 2008 - Aug 2008): SSN Engineering College, Chennai.

2. Teaching Assistant (Jan 2004 - Dec 2007): IIT Madras.

1. Lecturer (Aug 2002 - Dec 2003): Medak College of Eng. and Tech., Siddipet.

Courses Taught:

UG Courses:

Applied Linear Algebra, Mathematics I (Matrix algebra, Differential calculus, Differential equations), Mathematics II (Integral calculus, Vector calculus, Laplace transforms), Complex variables and special functions, Mathematics IV (Probability and Statistics, Numerical methods, Series solutions of differential equations), Calculus, Linear Algebra and Complex Analysis, Differential equations.

PG Courses:

Real Analysis
Linear Algebra
Topology
Measure and Integration
Functional Analysis
Algebra I (Groups and Rings)
Algebra II (Vector spaces, Modules, Fields)

Ph.D. Courses:

Advanced Functional Analysis
Operator Theory
Generalized Inverses

Significant Research Publications:

14. Chikkam M. Verriyya and T. Kurmayya, "On characterization of nonnegativity of the Moore-Penrose inverse of Matrices, and comparison results with proper Regular splittings", Indian Journal of Pure and Applied Mathematics, 2025. https://www.scopus.com/inward/record.url?eid=2-s2.0-105011393712&partnerID=MN8TOARS

13. Archana Bhat and T. Kurmayya, "On Weak Pseudo-regular Splittings of Bounded Linear Operators and Nonnegative Moore-Penrose Inverses", Indian Journal of Pure and Applied Mathematics, 56(3), 1156-1162, 2025.

12. Archana Bhat, T. Kurmayya and R.S. Selvaraj, “A characterization of Drazin monotonicity of operators over ordered Banach space”, The Journal of Analysis, 2023. (Impact factor 0.8, Scopus Indexed) https://link.springer.com/article/10.1007/s41478-023-00567-6

11. Archana Bhat and T. Kurmayya, A characterization of cone nonnegativity of Moore–Penrose inverses of unbounded Gram operators, Positivity, Vol.26, Article No. 67, 2022.

( Impact Factor: 1.0, SCIE indexed) https://link.springer.com/article/10.1007/s11117-022-00908-y

10. K. Appireddy and T. Kurmayya, Comparison results for Proper double splitting of Rectangular matrices, Filomat, Vol. 32, no. 6, 2273-2281, 2018.

9. K. Appi Reddy, T. Kurmayya and K.C. Sivakumar, Group Inverse Extensions of Certain M-matrix properties, Electronic Journal of Linear Algebra, 31, 686-705, November 2016.

8. T. Kurmayya and G. Ramesh, Cone nonnegativity of Moore-Penrose inverses of unbounded gram operators, Annals of Functional Analysis , 7(2), 338-347, 2016.

7. K. Appireddy and T. Kurmayya, {T,S} Splittings of Rectangular Matrices Revisited, International Journal of Pure and Applied Mathematics", Vol.108(4), 909-919, 2016.

6. K. Appi Reddy and T. Kurmayya, Moore-Penrose inverses of Gram matrices leaving a cone invariant in an indefinite innerproduct space, Special Matrices, 3, 155-162, 2015.

5. K. Kamaraj, T. Kurmayya and K.C. Sivakumar, On characterizations of Nonnegative Moore-Penrose inverses of Hilbert Space operators, The Journal of Analysis; 16, 11-18, 2008.

4. T.Kurmayya and K.C. Sivakumar, Moore-Penrose Inverse of a Gram Matrix and Its Nonnegativity, Journal of Optimization Theory and Appl. , 139, 201-207, 2008.

3. T.Kurmayya and K.C. Sivakumar, positive splittings of matrices and their nonnegative moore-penrose inverses, Discussiones Mathematicae General Algebra and Applications 28, 227-235, 2008.

2. T.Kurmayya and K.C. Sivakumar, Nonnegative Moore-Penrose inverses of operators over Hilbert spaces; Positivity 12, 475-481, 2008.

1. T.Kurmayya and K.C. Sivakumar; Nonnegative Moore-Penrose inverses of Gram operators; Linear Algebra and its Applications, 422 , 471-476 , 2007.

Ph.D. Guidance:

1. K. Appi Reddy (July 2013 - Dec 2017): Completed with the Institute Fellowship at NIT Warangal.

Thesis Title: "Certain Results on Nonnegative Generalized Inverses and Splittings of Matrices".

2. Archana Bhat (July 2018- 24th November 2023, Jointly with Prof. R.S. Selvaraj, NITW): with the support of DST Inspire Fellowship at NIT Warangal.

Thesis Title: Cone nonnegativity of generalized inverses of Linear operators

3. Ch. Machara Verriyya ( Jan 2020 - Till date): Matrix Analysis

4. K. Chandra Mouli (Jan 2021 - Till date): Applied Linear Algebra

5. V. Bhagyalakshmi (July 2024 - Till date): Matrix Analysis

6. Sailendra Pradhan (July 2024 - Till date): Functional Analysis

7. Malaya Ranjan Mehra (June 2026 - Till date)

Administrative Responsibilities:

15. Dean, Academic Affairs, NIT Andhra Pradesh (1st October 2020-20th December 2024)

14. Head, School of Sciences, NIT Andhra Pradesh (Jan 2020-Sep 2021)

13. Timetable In-charge, Department of Mathematics, NIT Warangal (Jan 2018 - Dec 2019)

12. Hostel Warden from May 2014- Nov 2016 in NIT Warangal.

11. Member in the exam schedule committee from Jun 2009-Aug 2010 in BITS Hyderabad.

10. Faculty In-charge for Project course allotment from July 2010 to May 2012.

9. Faculty coordinator for the practice school program in summer 2011.

8. Member in the Admissions, Course Registration and Counselling Committees.

7. Course coordinator for Mathematics-I multi-section course in 2011.

6. DAC UG and DAC PG&R member in NIT Warangal

5. Reviewer for the American Mathematical Society reviews

4. Member in the Board of Studies in Mathematics, Osmania University (UCE), Hyderabad from 2014 to 2016

3. Developed and delivered Three lectures for “A Refresher course on calculus” as a part of National Resource Centre (NRC) in Mathematics, NIT Warangal,2018.

2. One of the Instructors for GATE coaching classes conducted by SC/ST cell in NIT Warangal.

1. Teacher observer in MTTS Programme 2019 conducted at IISER, Thiruvananthapuram.

Projects on-going/completed:

Sl.No.	Title	Sponsored by	Status	Amount
1.	On Characterizations of nonnegative generalized inverses of tensors for solving tensor equations	NIT Andhra Pradesh (Seed Grant)	Completed	Rs. 3,70,000

Workshops/FDP/Conferences organised:

AICTE ATAL FDP on "Applications of Linear Algebra in Data Science" is being organized from 7th-11th September, 2020

Post Graduate Thesis supervision:

Sl. No.

Name of student

Title of the dissertation

Year of Completion

N. Anjaneyulu

Study on Positive definite matrices

2013

A. Srinivas

Computational methods of Moore-Penrose Inverrse of a matrix

2013

V. Ayyappa

Existence and construction of Generalized inverses

2013

K. Daivakaruna

Characterization of EP matrices and weighted EP matrices

2014

B. Rebecca

Inverse Positivity of Singular and non singular M-matrices

2014

Sandeep Nayak

Some Applications of partial orders to iterative methods for rectangular

linear systems

2014

B. Mahesh

Moore-Penrose Inverse positivity of Interval Matrices.

2015

T. Tejaswini

Cone iterative methods for least square solutions of minimal norm

2016

Sachin Kumar

{T,S} splitting of rectangular matrices

2016

10.

Prakash Nainwal

Study of generalized eigenvector and canonical form of nilpotent operators

2017

11.

Pranavkumar

Study on completely positive matrices and some open problems

2017

12.

Alekhya Reddy

Convergence and coparison theorems for double splittings of matrices

2017

13.

Mr.Prabir Barman

Decomposition of Symplectic normal matrices

2018

14.

Mr. Praveemkumar Yadav

Shape of the numerical range of 3x3 normal matrix

2018

15.

Mr .Bhupendra Singh

Traces of Matrix Products

2018

16.

Mr. Sagar Saha

On directional derivatives of trace functionals

2019

17.

Mr. Himanshu Verma

The Laplacian Spectrum of a Graph

2019

18.

Mr. Bixapathi

On Continuity of Generalized Inverses

2019

Professional Training received:

Sl. No.	Name of Training	Organization where training was received	Year	Duration
1	National Workshop on Matrices and Applications	ISI - SQC & OR Unit, Hyderabad	2006	8 days
2	Instructional Conference on Singular Value Decomposition and its applications	ISI - SQC & OR Unit, Hyderabad	2007	5 days
3	Workshop on Recent Trends in Partial Differential Equations and applications	University of Hyderabad	2012	2 days
4	Workshop on Introduction to Research Methodologies	NIT Warangal organized by IIT Bombay	2012	10 days
5	Workshop on Teaching and Learning for Excellence	NIT Warangal	2012	3 days
6	Workshop National Programme on Technology Enhanced Learning	NIT Warangal	2012	2 days
7	Instructional school for lecturers on Functional Analysis	ISI Bangalore	2013	5 days
8	International workshop on Operator Theory and its Applications	IISc Bangalore	2013	5 days
9	Workshop on Functional Analysis & Applications	IIT Hyderabad	2014	2 days
10	Workshop on Numerical Linear Algebra and its Applications	BITS Hyderabad	2015	3 days

Contributory Talks in Conferences/Workshops:

Nonnegative Moore-Penrose inverses over Hilbert lattices: National Symposium on Mathematical Methods and Applications organized by IIT - Madras, Chennai , December 22, 2006.

Nonnegative Moore-Penrose inverses over Hilbert lattices: CMASM, the Fourteenth Inter- national Conference of the FIM , IIT Madras, Chennai, 6th -8th , January 2007.

Nonnegative Moore–Penrose inverses of Gram operators: International Conference on Functional Analysis and Applications, Scott Christian College, Nagercoil, Kanyakumari during November 28- December 1st, 2007.

Cone nonnegativity of Moore-Penrose inverses of unbounded Gram operators: International Conference on Linear Algebra \& its Applications, Department of Statistics, Manipal University during December 18-20, 2014.

Group inverse extensions of certain M-matrix properties: International Conference on Mathematical Analysis and its Applications, Department of Mathematics, IIT Roorkee, November 28-December 02, 2016.

Delivered 1 hour lecture in CMES-2013 organized by Department of Mathematics , NIT Warangal, 25th Oct 2013.

Delivered 1 hour lecture in MMNTES-2018 organized by Department of Mathematics, NIT Warangal, 9-13^th,Oct, 2018.

Delivered 3 hours lectures in MCNTES-2018 organized by Department of Mathematics, NIT Warangal, 29^th Oct-2^nd Nov, 2018.

Invited Talks at Various Places:

Banach fixed point theorem and its applications, STTP on Recent trends in Applied Mathematics, Department of Mathematics, VNIT Nagpur, 9th May, 2013.

Singular value Decomposition and its applications, STTP on Recent trends in Applied Mathematics, Department of Mathematics, VNIT Nagpur, 9th May, 2013.

Computational methods of Generalized inverses, National Workshop on Computational methods in Engineering and Science, NIT Warangal, 25th October, 2013.

Perron-Frobenius theorem and its applications, Current trends in Applied Mathematics: Applications and future aspects, NIT Raipur, 10th July, 2015.

Resource person for FDP “Workshop on Linear Algebra”, Nagarjuna Govt. Degree College(A), Nalgonda, 27^th Oct, 2018.

Delivered Invited talk in NCMCA-2018, Women’s Christian College, Chennai, 25^th Jan, 2018.

Out Reach Activities:

Sl. No.	Name of the Activity	Place	Date
	Participated as eminent person in consultation workshop on NEP-2020	DIET, Dubacherla	25.02.2022
	Delivered a talk on Salient features and exit policies on NEP-2020	NIT Andhra Pradesh	29^th -30^th Oct 2021
	Acted as an examiner for M.Sc. students' project and evaluating the project report as well as conducting the viva – voce examination	VNIT Nagapur	14-06-2022
	Reviewer for American Mathematical Society (Every six months at least one paper is reviewed)	American Mathematical Society	From 01-03-2017 to Till today
	Chaired a session during a talk on National Science Day	NIT Andhra Pradesh	27-02-2023
	Delivered talk on “Positive Generalized inverses and Applications to solve systems of Linear Equations” .	Adikavi Nannayya University, Rajhamundry	6^th & 7^th January 2021
	Delivered talk in FDP	Malla Reddy Engineering College	26^th Nov, 2020
	Member of BoS, Department of Mathematics	Gudlavelluru Eng. College	22-07-2023
	Member of BoS, Department of Mathematics	Nalla Malla Reddy Eng. College, Hyderabad	15-02-2021
10 .	Doctoral Committee member for one of the Ph.D. scholoar in the Department of Computer Science, SRM AP	SRM University Andhra Pradesh, Vijayawada	26-07-2023
11.	Delivered talk in ATAL FDP organized by School of Sciences NIT Andhra Pradesh	NIT Andhra Pradesh	7^th- 11^th Sep 2020
12.	Expert panel/Jury member CYSC 2024	NIT Raipur	26-27, February 2024

Achievements & Awards:

1. Received the R.S. Varma Memorial Best Paper Award-2007, in the International Conference on Computational, Mathematical and Statistical Methods during 6 -8, Jan 2007, organized by IIT-Madras and Stella Maris College, Chennai.

2. Senior Research Fellowship, Indian Institute of Technology, Madras, Jan 2006 - Dec 2007.

3. Junior Research Fellowship, Indian Institute of Technology, Madras, Jan 2004- Dec 2005.

4. Secured 96.65 Percentile, all India 44th Rank) in GATE 2003.

5. Secured all india 174th rank in GATE 2002.

6. Won Silver Medal in the Mathematical Olympiad 2001 organized by Andhra Pradesh Association of Mathematics Teachers.

7. Got All India 7th rank in University of Hyderabad M.Sc. entrance exam.

8. Received N.C.C. (National Cadet Corps) Army wing B & C certificates for good performance.

9. Selected as Assistant Professor in VIT vellore, SSN Eng. College, BITS Hyderabad, NIT Rourkela and in NIT Warangal