Abstract. We present a weak sufficient condition for the existence of Souslin trees at successor of regular cardinals. The result is optimal and simultaneously improves an old theorem of Gregory and a more recent theorem of the author.
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A. Rinot, Souslin trees at successors of regular cardinals, Math. Log. Q., 65(2): 200-204, 2019.
Submitted to Mathematical Logic Quarterly, October 2018.
Accepted, December 2018.