James Renegar. Is It Possible to Know a Problem Instance Is Ill-Posed?: Some Foundations for a General Theory of Condition Numbers. J. Complexity, 10(1):1-56, 1994. [doi]
@article{Renegar94,
title = {Is It Possible to Know a Problem Instance Is Ill-Posed?: Some Foundations for a General Theory of Condition Numbers},
author = {James Renegar},
year = {1994},
doi = {10.1006/jcom.1994.1001},
url = {http://dx.doi.org/10.1006/jcom.1994.1001},
researchr = {https://researchr.org/publication/Renegar94},
cites = {0},
citedby = {0},
journal = {J. Complexity},
volume = {10},
number = {1},
pages = {1-56},
}