@article {10.1090/mcom/3748,
AUTHOR = {Feischl, Michael},
TITLE = {Inf-sup stability implies quasi-orthogonality},
JOURNAL = {Math. Comp.},
FJOURNAL = {Mathematics of Computation},
VOLUME = {91},
YEAR = {2022},
MONTH = {sep},
NUMBER = {337},
PAGES = {2059--2094},
ISSN = {0025-5718},
DOI = {10.1090/mcom/3748},
URL = {https://doi.org/10.1090/mcom/3748},
}