Ball, Richard N.; Picado, Jorge; Pultr, Aleš Some aspects of (non) functoriality of natural discrete covers of locales. (English) Zbl 1468.06024 Quaest. Math. 42, No. 6, 701-715 (2019); correction ibid. 44, No. 10, 1427 (2021). MSC: 06D22 54D10 54D35 PDFBibTeX XMLCite \textit{R. N. Ball} et al., Quaest. Math. 42, No. 6, 701--715 (2019; Zbl 1468.06024) Full Text: DOI Link
Ball, Richard N.; Pultr, Aleš Maximal essential extensions in the context of frames. (English) Zbl 1494.06006 Algebra Univers. 79, No. 2, Paper No. 32, 13 p. (2018). MSC: 06D22 54A05 18A22 PDFBibTeX XMLCite \textit{R. N. Ball} and \textit{A. Pultr}, Algebra Univers. 79, No. 2, Paper No. 32, 13 p. (2018; Zbl 1494.06006) Full Text: DOI
Banaschewski, Bernhard; Pultr, Aleš Variants of openness. (English) Zbl 0810.54017 Appl. Categ. Struct. 2, No. 4, 331-350 (1994). Reviewer: P.T.Johnstone (Cambridge) MSC: 54C10 54D10 06D20 PDFBibTeX XMLCite \textit{B. Banaschewski} and \textit{A. Pultr}, Appl. Categ. Struct. 2, No. 4, 331--350 (1994; Zbl 0810.54017) Full Text: DOI
Pultr, Aleš; Tozzi, Anna Separation axioms and frame representation of some topological facts. (English) Zbl 0797.54029 Appl. Categ. Struct. 2, No. 1, 107-118 (1994). Reviewer: P.T.Johnstone (Cambridge) MSC: 54D10 06D99 54C10 PDFBibTeX XMLCite \textit{A. Pultr} and \textit{A. Tozzi}, Appl. Categ. Struct. 2, No. 1, 107--118 (1994; Zbl 0797.54029) Full Text: DOI