Hell, Pavol; Nešetřil, Jaroslav In praise of homomorphisms. (English) Zbl 1506.08001 Comput. Sci. Rev. 40, Article ID 100352, 5 p. (2021). MSC: 08A05 08-03 PDFBibTeX XMLCite \textit{P. Hell} and \textit{J. Nešetřil}, Comput. Sci. Rev. 40, Article ID 100352, 5 p. (2021; Zbl 1506.08001) Full Text: DOI
Feder, Tomás; Hell, Pavol; Larose, Benoît; Siggers, Mark; Tardif, Claude Graphs admitting \(k\)-NU operations. II: The irreflexive case. (English) Zbl 1298.05272 SIAM J. Discrete Math. 28, No. 2, 817-834 (2014). MSC: 05C75 08B05 PDFBibTeX XMLCite \textit{T. Feder} et al., SIAM J. Discrete Math. 28, No. 2, 817--834 (2014; Zbl 1298.05272) Full Text: DOI
Feder, Tomás; Hell, Pavol; Larose, Benoît; Loten, Cynthia; Siggers, Mark; Tardif, Claude Graphs admitting \(k\)-NU operations. I: The reflexive case. (English) Zbl 1285.05152 SIAM J. Discrete Math. 27, No. 4, 1940-1963 (2013). MSC: 05C75 08B05 PDFBibTeX XMLCite \textit{T. Feder} et al., SIAM J. Discrete Math. 27, No. 4, 1940--1963 (2013; Zbl 1285.05152) Full Text: DOI
Feder, Tomás; Hell, Pavol; Jonsson, Peter; Krokhin, Andrei; Nordh, Gustav Retractions to pseudoforests. (English) Zbl 1215.05063 SIAM J. Discrete Math. 24, No. 1, 101-112 (2010). MSC: 05C15 08A70 68R10 PDFBibTeX XMLCite \textit{T. Feder} et al., SIAM J. Discrete Math. 24, No. 1, 101--112 (2010; Zbl 1215.05063) Full Text: DOI
Hell, Pavol Graph retractions. (English) Zbl 0362.05072 Colloq. int. Teorie comb., Roma 1973, Tomo II, 263-268 (1976). MSC: 05C99 05C15 05C25 08A05 PDFBibTeX XML
Hell, P. Subdirect products of bipartite graphs. (English) Zbl 0308.05125 Infinite finite Sets, Colloq. Honour Paul Erdös, Keszthely 1973, Colloq. Math. Soc. Janos Bolyai 10, 857-866 (1975). MSC: 05C99 05C10 08A05 PDFBibTeX XML
Hell, Pavol On some strongly rigid families of graphs and the full embeddings they induce. (English) Zbl 0299.05109 Algebra Univers. 4, 108-126 (1974). MSC: 05C25 05C20 18B15 08A05 PDFBibTeX XMLCite \textit{P. Hell}, Algebra Univers. 4, 108--126 (1974; Zbl 0299.05109) Full Text: DOI
Hell, P. Full embeddings into some categories of graphs. (English) Zbl 0257.05115 Algebra Univers. 2, 129-141 (1972). MSC: 05C25 08A05 18B15 05C15 PDFBibTeX XMLCite \textit{P. Hell}, Algebra Univers. 2, 129--141 (1972; Zbl 0257.05115) Full Text: DOI
Nešetřil, Jaroslav; Hell, Pavol \(k\)-societies with given semigroup. (English) Zbl 0254.08002 Combinat. Struct. Appl., Proc. Calgary internat. Conf. combinat. Struct. Appl., Calgary 1969, 301-302 (1970). MSC: 08A05 05C25 05C99 PDFBibTeX XML