Veldsman, Stefan The significance of the contributions of congruences to the theory of connectednesses and disconnectednesses for topological spaces and graphs. (English) Zbl 07768613 Quaest. Math. 46, No. 12, 2669-2700 (2023). MSC: 54B15 54D05 05C40 05C25 16N80 PDFBibTeX XMLCite \textit{S. Veldsman}, Quaest. Math. 46, No. 12, 2669--2700 (2023; Zbl 07768613) Full Text: DOI arXiv
Veldsman, Stefan Connectednesses of graphs and congruences. (English) Zbl 1475.05086 Asian-Eur. J. Math. 14, No. 10, Article ID 2150178, 19 p. (2021). MSC: 05C25 05C76 16N80 05C40 PDFBibTeX XMLCite \textit{S. Veldsman}, Asian-Eur. J. Math. 14, No. 10, Article ID 2150178, 19 p. (2021; Zbl 1475.05086) Full Text: DOI
Veldsman, S. Hereditary torsion theories for graphs. (English) Zbl 1499.18019 Acta Math. Hung. 163, No. 2, 363-378 (2021). Reviewer: Robert Jajcay (Bratislava) MSC: 18E40 18B99 05C25 05C76 16N80 08A30 PDFBibTeX XMLCite \textit{S. Veldsman}, Acta Math. Hung. 163, No. 2, 363--378 (2021; Zbl 1499.18019) Full Text: DOI
Broere, Izak; Heidema, Johannes; Veldsman, Stefan Congruences and Hoehnke radicals on graphs. (English) Zbl 1446.05043 Discuss. Math., Graph Theory 40, No. 4, 1067-1084 (2020). MSC: 05C25 05C76 16N80 08A30 PDFBibTeX XMLCite \textit{I. Broere} et al., Discuss. Math., Graph Theory 40, No. 4, 1067--1084 (2020; Zbl 1446.05043) Full Text: DOI
Mlitz, Rainer Richard Wiegandt – 65 years for radical theory. (English) Zbl 0954.01019 Quaest. Math. 22, No. 3, 427-447 (1999). MSC: 01A70 16N80 17A65 17D05 20M11 54B15 05A99 08A05 PDFBibTeX XMLCite \textit{R. Mlitz}, Quaest. Math. 22, No. 3, 427--447 (1999; Zbl 0954.01019) Full Text: DOI