Sun Qiyu (**孙颀彧****)**

Professor and Graduate Coordinator

E-mail Address: qiyu.sun@ucf.edu

Mailing Address:

Department of Mathematics

University of Central Florida

Orlando, FL 32816, USA

Phone and Fax Numbers:

Phone: US 407-823-4839

Fax: US 407-823-6253

### UCF Math Graduate Program

### Teaching

MAP6207 Optimization Theory (Fall 2019)

### Publications

- Nazar Emirov, Cheng Cheng, Junzheng Jiang, Qiyu Sun, Polynomial graph filter of multiple shifts and distributed implementation of inverse filtering, arXiv:2003.11152 2020.
- Yan Chen, Cheng Cheng and Qiyu Sun, Phase retrieval of complex and vector-valued functions, submitted 2019
- Elie Atallah, Nazanin Rahnavard, and Qiyu Sun, A Code-based Distributed Gradient Descent Scheme for Convex Optimization over Networks, submitted 2019
- Chang Eon Shin and Qiyu Sun, Differential subalgebras and norm-controlled inversion, Proceedings of IWOTA 2018: Operator theory, operator algebras and noncommutative topology (Ronald G. Douglas Memorial Volume), Birkhauser, 2020.
- Cheng Cheng and Qiyu Sun, Stable Phaseless Sampling and Reconstruction of Real-Valued Signals with Finite Rate of Innovations, 2018
- Hossein K. Mousavi, Qiyu Sun, Nader Motee, Space-Time Sampling for Network Observability, arXiv:1811.01303
- Nader Motee and Qiyu Sun, Localized Stability Certificates for Spatially Distributed Systems over Sparse Proximity Graphs, 2018.
- Yang Chen, Cheng Cheng, Qiyu Sun and Haichao Wang, Phase retrieval of real-valued signals in a shift-invariant space, Applied and Computational Harmonic Analysis, Volume 49, Issue 1, July 2020, Pages 56-73 , arXiv 1603.01592
- Junzheng Jiang, David B. Tay, Qiyu Sun and Shan Ouyang, Design of nonsubsampled graph filter banks via lifting schemes, IEEE Signal Processing Letter, volume 27, 2020, pp. 441-445.
- Cheng Cheng, Junzheng Jiang, Emirov Nazar and Qiyu Sun, Iterative Chebyshev Polynomial Algorithm for Signal Denoising on Graphs, 2019 13th International conference on Sampling Theory and Applications (SampTA), Bordeaux, France, 2019, pp. 1-5.
- Chang Eon Shin and Qiyu Sun, Polynomial control on stability, inversion and powers of matrices on simple graphs, Journal of Functional Analysis, Volume 276, Issue 1, 1 January 2019, Pages 148–182.
- Cheng Cheng, Yingchun Jiang and Qiyu Sun, Spatially distributed sampling and reconstruction, Applied and Computational Harmonic Analysis, 47 (2019), 109-148. ArXiv 1511.0841 Poster
- Cheng Cheng, Junzheng Jiang and Qiyu Sun, Phaseless Sampling and Reconstruction of Real-Valued Signals in Shift-Invariant Spaces Journal of Fourier Analysis and Applications, 25(2019), 1361–1394.
- Junzheng Jiang, Cheng Cheng, and Qiyu Sun,Nonsubsampled Graph Filter Banks: Theory and Distributed Algorithms, IEEE Transactions on Signal Processing, Volume 67, Issue 15, Aug. 2019, pp. 3938 – 3953. ArXiv 1709.04107
- Nader Motee and Qiyu Sun, Sparsity and Spatial Localization Measures for Spatially Distributed Systems, SIAM Journal on Control and Optimization, 55 (1)(2017), 200–235. (the 2019 SIAG/CST Best SICON Paper Prize)
- Xin-rong Dai and Qiyu Sun, The abc problem for Gabor systems,
*Memoirs of American Mathematical Society*, volume 244, no. 1152, 2016, pp. 1-109. ( Earlier version in ArXiv.org) **More >>>**

### Research Activities

- Gave a talk on 13th International Conference on Sampling Theory and Applications, July 8-12, 2019.
- Attend the SIAM SIAM Conference on Control and Its Applications (CT19) , June 19 – 21, 2019

at Chengdu, China and accept the 2019 SIAG/CST Best SICON Paper Prize for the paper “Sparsity and Spatial Localization Measures for Spatially Distributed Systems,” SICON 55-1 (2017), pp. 200-235, to recognize for making “a fundamental contribution to spatially distributed systems theory, showing in particular that quadratically optimal state feedback controllers for spatially decaying systems are sparse and spatially localized.” The SIAG/CST Best SICON Paper Prize is awarded to the author(s) of the two most outstanding papers, as determined by the prize committee, published in the*SIAM Journal on Control and Optimization*(SICON) in the three calendar years preceding the award year. - The paper, Spatially distributed sampling and reconstruction, coauthored with Cheng Cheng and Yingchun Jiang is published in Applied and Computational Harmonic Analysis, 47 (2019), 109-148.
- Paper on Nonsubsampled Graph Filter Banks with Junzheng Jiang and Cheng Cheng is published in IEEE Transactions on Signal Processing, Volume 67, 2019, pp. 3938 – 3953.
- Gave a talk at Department of Mathematics, Northwest University, June 17, 2019
- Gave a talk at a modern analysis conference on Analysis at Jiaxin University, June 7-8, 2019.
- Gave a talk at the HDU Workshop on Optimization Methods for Imaging and Big Data Problems, May 24-25, 2019.
- Gave a talk at Dongseo University on May 22, 2019.
- Gave a talk at the International Conference on Computational Harmonic Analysis and Statistical Learning 2019 to be held at Hohai University during May 17-21, 2019.
- Visited Sogang University, March 2019
- Attend the IPAM workshop on Operator Theoretic Methods in Dynamic Data Analysis and Control at IPAM, UCLA, February 11 – 15, 2019.
- The project “Mathematical Foundation for Signal Processing on Spatially Distributed Networks” was award by the National Science Foundation (DMS1816313).
- Cheng Cheng (PhD 2017) will be a postdoctoral Associate at Duke University and SAMSI. She is supervised by Xin Li with my co-supervision.
- Syed Alam Abbas (PhD 2017) will be a postdoctoral research at University of New Mexico. He is supervised by Hassan Foroosh with my co-supervision.
- Aritra Dutta (PhD 2016) will be a Postdoctoral Researcher at the University of Edinburgh, with joint affiliation at the Visual Computing Center in KAUST, Saudi Arabia. Dr. Aritra Dutta is supervised by Xin Li with my co-supervision.
**More >>>**

### Academic Services

**Numerical Functional Analysis and Optimization (2010–)****Sampling Theory in Signal and Imaging Processing (2013–)****Advances in Computational Mathematics (2006–2013)****Special issue on Operator Algebra and Representation: Frames, Wavelets and Fractals (Numerical Functional Analysis and Optimization, Volume 33, No.7—9, 2012)****Special issue on Wavelet Analysis in PDE and Mathematical Imagery (Applicable Analysis, Vol 90, No. 8, 2011)****Special issue on Applied Harmonic Analysis: Wavelets and Sampling (Acta Applicandae Mathematicae, Vol. 107, no. 1-3, 2009)****Special issue on Frames (Advances in Computational Mathematics, 2003)**

### Favorite Links

**Advances in Mathematics****Advances in Computational Mathematics****Applied and Computational Harmonic Analysis****Comptes****rendus Mathematique****Constructive Approximation****IEEE Transcations on Image Processing****IEEE Transaction on Signal Processing****Journal of Approximation Theory****Journal of Fourier Analysis and Applications****Journal of Functional Analysis****Memoir of the American Mathematical Society****Numerical Functional Analysis and Optimization****SIAM Journal of Mathematical Analysis****Transactions of the American Mathematical Society**- The
**Fourth Hangzhou Workshop on Harmonic Analysis and Applications**, December 14-15, 2019 - The
**third Hangzhou workshop on harmonic analysis**, December 15-16, 2018 **Special Session on Infinite Dimension Systems and Wavelets, IWOTA 2018, organized by Marcin Bownik, Xingde Dai and Qiyu Sun****Workshop on Applied Harmonic Analysis and Sampling Theory (February 2018)****The second Hangzhou workshop on harmonic analysis and applications at Hangzhou, Zhejiang, December 16 -17, 2017****Special Session on Applied Harmonic Analysis: Frames, Samplings and Applications, AMS Sectional Meeting at UCF, September 2017****Workshop on High-Dimensional Data Fitting and Approximation, March 2017****Conference on Orthogonal Polynomials and q-Series, 2015****Computational Analysis of Inverse Problems and Partial Differential Equations, 2013****Oberwolfach****workshop on Operator Algebra and Representation theory, 2011****Banff workshop on Operator Algebra and Representation Theory, October 9-10, 2010****32nd SIAM Southeastern-Atlantic Section Conference, 2008****Harmonic Analysts****American Mathematical Society (AMS)****Society for Industrial and Applied Mathematics (SIAM)****The Institute of Electrical and Electronics Engineers (IEEE)****NA Digest****MathSciNet****, American Mathematical Society****Zentralblatt****MATH****ISI Web of Knowledge****Google Scholar****ArXiv**__杭州忆__

### Myself

**Department Graduate Program****My CV 2020****My Official Website****Some of my collaborators****Mathematical Review items****ISI Web of Knowledge****Google Scholar****Papers in ArXiv.org****ResearchGate**- My Book: 多进制小波分析 (An Introduction to Multiband Wavelets) published by
**Zhejiang University Press, 2001**