Dr. Uaday Singh | Approximation Theory

Dr. Uaday Singh| Leading Researcher in Approximation Theory

Congratulations,Dr. Uaday Singh  on winning the esteemed Best Researcher Award from ResearchW! Your dedication, innovative research, and scholarly contributions have truly made a significant impact in your field. Your commitment to advancing knowledge and pushing the boundaries of research is commendable. Here’s to your continued success in shaping the future of academia and making invaluable contributions to your field. Well done!

Dr. Uaday Singh Sebastin is a distinguished academic and researcher in the field of renewable energy, holds a PhD in Biosystems Engineering from Kangwon National University, South Korea. His academic journey has been marked by a profound dedication to advancing solar energy technologies, specifically in solar thermal harvesting and its integration into agricultural and architectural applications.

Professional Profiles:


Ph.D. in ‘Fourier Approximation in Lp(p ≥ 1)- Spaces Using Summability Techniques’ from Chaudhary Charan Singh University, Meerut and IIT Roorkee, 2007

Recent Teaching Interests

Approximation Theory

Differential Geometry

Linear Algebra

Elementary Real Analysis

Engineering Mathematics for B.Tech students

PhD Guidence

Ongoing supervision of Ph.D. candidates in topics like ‘Random Fourier series’, ‘Approximation by neural network operators’, ‘Approximation by singular integrals’, among others.

Project Experience

Handling and contribution to various funded projects on Fourier Series, Convergence Properties, and more.

Developed pedagogy courses in Engineering Mathematics.

Professional Memberships

Regular member of American Mathematical Society (AMS)

Life member of Forum D’ Analystes, Indian Mathematical Society (IMS), International Society for Analysis, its Applications and Computation (ISAAC), Indian Science Congress Association (ISCA)

Professional Experience

Associate Professor, Department of Mathematics, IIT Roorkee (Since November 23, 2015)

Assistant Professor, Department of Mathematics, IIT Roorkee (November 19, 2010 – November 22, 2015)

Assistant Professor, Banaras Hindu University, Varanasi (January 21, 2006 – November 18, 2010)

Lecturer, NCERT, New Delhi (November 10, 2003 – January 20, 2006)

Academic Contributions

Organized and co-organized several workshops, conferences, and short-term courses.

Collaborated with international institutions and presented papers globally.

Participated in various seminars, delivered guest lectures, and talks.

Administrative Roles

Currently serving as the warden of Azad Bhawan Hostel.

Engaged in committees focusing on curriculum, faculty recruitment, space management, and academic programs.

Publications Top Note :

Using infinite matrices to approximate functions of class Lip (α, p) using trigonometric polynomials

paper published in 2007 cite by 71

SARS‐CoV‐2 infection and venous thromboembolism after surgery: an international prospective cohort study

paper published in 2022 cite by 47

Approximation of signals of class Lip (α, p) by linear operators  paper published in 2011 cite by 47

Approximation of functions (signals) belonging to Lip-class by means of conjugate Fourier series using linear operators  paper published in 2025 cite by 28

 Global Shutter Quantum Dot Image Sensor Optimized for Near and Shortwave Infrared

paper published in 2021 cite by 22

Degree of approximation of the conjugate of signals (functions) belonging to Lip (α, r)-class by (C, 1)(E, q) means of conjugate trigonometric Fourier series   paper published in 2012 cite by 18

T· C1 summability of a sequence of Fourier coefficients   paper published in 2008 cite by 15

On best approximation in locally convex space   paper published in 2006 cite by 14

Approximation of conjugate of functions belonging to weighted Lipschitz class W (Lp, ξ (t)) by Hausdorff means of conjugate Fourier series  paper published in 2014 cite by 13

Trigonometric approximation of periodic functions belonging to Lip (ω (t), p)-class   paper published in 2012 cite by 14

📊 Citation Metrics (Google Scholar):

  • Citations by: All – 449, Since 2018 – 244
  • h-index: All – 11, Since 2018 – 7
  • i10 index: All – 11, Since 2018 – 5