Keiko Narita, Noboru Endou, Yasunari Shidama. The Orthogonal Projection and the Riesz Representation Theorem. Formalized Mathematics, 23(3):243-252, 2015. [doi]
@article{NaritaES15,
title = {The Orthogonal Projection and the Riesz Representation Theorem},
author = {Keiko Narita and Noboru Endou and Yasunari Shidama},
year = {2015},
url = {http://www.degruyter.com/view/j/forma.2015.23.issue-3/forma-2015-0020/forma-2015-0020.xml},
researchr = {https://researchr.org/publication/NaritaES15},
cites = {0},
citedby = {0},
journal = {Formalized Mathematics},
volume = {23},
number = {3},
pages = {243-252},
}