Orthonormal function system
From HandWiki
An orthonormal function system (ONS) is an orthonormal basis in a vector space of functions.[1]
References
- ↑ Melzak, Z. A. (2012), Companion to Concrete Mathematics, Dover Books on Mathematics, Courier Dover Corporation, p. 138, ISBN 9780486135816, https://books.google.com/books?id=aZ-_GxnhsUgC&pg=RA1-PA138.
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