Boone, James R. On the tightness of a topological space. (English) Zbl 0551.54002 Bol. Soc. Mat. Mex., II. Ser. 26, 43-47 (1981). MSC: 54A25 54C10 PDFBibTeX XMLCite \textit{J. R. Boone}, Bol. Soc. Mat. Mex., II. Ser. 26, 43--47 (1981; Zbl 0551.54002)
Boone, James R. Universal bounds and monotonicity of ordinal invariants. (English) Zbl 0472.54003 Proc. Am. Math. Soc. 83, 641-644 (1981). MSC: 54A25 54C10 PDFBibTeX XMLCite \textit{J. R. Boone}, Proc. Am. Math. Soc. 83, 641--644 (1981; Zbl 0472.54003) Full Text: DOI
Boone, James R. Pseudo-open functions are monotonic decreasing for ordinal and cardinal invariants. (English) Zbl 0498.54011 General Topology Appl. 9, 243-251 (1978). MSC: 54C10 54A25 54D50 54D55 PDFBibTeX XMLCite \textit{J. R. Boone}, General Topology Appl. 9, 243--251 (1978; Zbl 0498.54011) Full Text: DOI