J\"org Brendle
Around splitting and reaping

Comment.Math.Univ.Carolinae 39,2 (1998) 269-279.

Abstract:We prove several results on some cardinal invariants of the continuum which are closely related to either the splitting number ${\frak s}$ or its dual, the reaping number ${\frak r}$.

Keywords: cardinal invariants of the continuum, splitting number, open splitting number, reaping number, $\sigma $-reaping number, Cicho\'n's diagram, Hechler forcing, finite support iteration
AMS Subject Classification: 03E05, 03E35