Shmuely, Zahava Increasing and decreasing operators on complete lattices. (English) Zbl 0343.06009 J. Comb. Theory, Ser. A 21, 369-383 (1976). MSC: 06B23 06A15 PDF BibTeX XML Cite \textit{Z. Shmuely}, J. Comb. Theory, Ser. A 21, 369--383 (1976; Zbl 0343.06009) Full Text: DOI OpenURL
Narushima, Hiroshi Principle of inclusion-exclusion on semilattices. (English) Zbl 0289.05013 J. Comb. Theory, Ser. A 17, 196-203 (1974). MSC: 05A15 05A17 05A19 05C30 06A15 06B05 06E05 60C05 68Q45 03G05 03E05 20B25 05B35 05B99 PDF BibTeX XML Cite \textit{H. Narushima}, J. Comb. Theory, Ser. A 17, 196--203 (1974; Zbl 0289.05013) Full Text: DOI OpenURL