| Affiliation: | 1. Department of Mathematics, Sichuan University, Chengdu, 610064, China;2. Department of Mathematics, University of Notre Dame, Notre Dame, IN 46556, USA;3. Beijing International Center for Mathematical Research, Peking University, Beijing, 100871, China;4. Department of Mathematics, Southwest Jiaotong University, Chengdu, 611756, China;1. California Polytechnic University, Pomona, United States of America;2. CUNY Graduate Center and Lehman College, United States of America;1. Department of Mathematics, University of Bologna, P.zza di Porta San Donato 5, 40126 Bologna, Italy;2. Boeing Research and Technology Developmental Center, 9725 E. Marginal Way South, Building 9-98.2, Mail Code 42-58, Seattle, WA 98108, USA;3. Center for Constructive Approximation, Department of Mathematics, Vanderbilt University, 1326 Stevenson Center, Nashville, TN 37240, USA |
