Combining Riesz bases in
arXiv:1501.05257 · doi:10.1007/s00222-014-0522-3
Abstract
We prove that every finite union of rectangles in admits a Riesz basis of exponentials.
14 pages
arXiv:1501.05257 · doi:10.1007/s00222-014-0522-3
We prove that every finite union of rectangles in admits a Riesz basis of exponentials.
14 pages