Toshimichi Usuba. The downward directed grounds hypothesis and very large cardinals. J. Mathematical Logic, 17(2):1750009, 2017. [doi]
@article{Usuba17,
title = {The downward directed grounds hypothesis and very large cardinals},
author = {Toshimichi Usuba},
year = {2017},
doi = {10.1142/S021906131750009X},
url = {https://doi.org/10.1142/S021906131750009X},
researchr = {https://researchr.org/publication/Usuba17},
cites = {0},
citedby = {0},
journal = {J. Mathematical Logic},
volume = {17},
number = {2},
pages = {1750009},
}