Koganov, L. M. Number of cyclically irreducible words in the alphabet of a free group of finite rank. (English. Russian original) Zbl 1142.68056 Cybern. Syst. Anal. 43, No. 4, 499-506 (2007); translation from Kibern. Sist. Anal. 2007, No. 4, 39-48 (2007). MSC: 68R15 05C15 20E05 PDF BibTeX XML Cite \textit{L. M. Koganov}, Cybern. Syst. Anal. 43, No. 4, 499--506 (2007; Zbl 1142.68056); translation from Kibern. Sist. Anal. 2007, No. 4, 39--48 (2007) Full Text: DOI
Koganov, Leonid M.; Liskovets, Valery A.; Walsh, Timothy R. S. Total vertex enumeration in rooted planar maps. (English) Zbl 0993.05087 Ars Comb. 54, 149-160 (2000). Reviewer: Martin Klazar (Praha) MSC: 05C30 05C10 05A19 PDF BibTeX XML Cite \textit{L. M. Koganov} et al., Ars Comb. 54, 149--160 (2000; Zbl 0993.05087)
Koganov, L. M. A universal bijection between Gessel-Stanley permutations and diagrams of connections of corresponding ranks. (English. Russian original) Zbl 0879.05004 Russ. Math. Surv. 51, No. 2, 333-335 (1996); translation from Usp. Mat. Nauk 51, No. 2, 165-166 (1996). Reviewer: J.Cigler (Wien) MSC: 05A15 05A05 PDF BibTeX XML Cite \textit{L. M. Koganov}, Russ. Math. Surv. 51, No. 2, 333--335 (1996; Zbl 0879.05004); translation from Usp. Mat. Nauk 51, No. 2, 165--166 (1996) Full Text: DOI
Koganov, L. M. Coding and counting spanning trees in Kleitman-Golden graphs. (English. Russian original) Zbl 0766.05036 Cybernetics 27, No. 3, 311-319 (1991); translation from Kibernetika 1991, No. 3, 1-7 (1991). Reviewer: M.Škoviera (Bratislava) MSC: 05C30 05C05 11B39 PDF BibTeX XML Cite \textit{L. M. Koganov}, Cybernetics 27, No. 3, 311--319 (1991; Zbl 0766.05036); translation from Kibernetika 1991, No. 3, 1--7 (1991) Full Text: DOI
Koganov, L. M. Application of the notion of pseudogenerated two-index sequence and lemmas on substitution. (Russian) Zbl 0733.05004 Komb. Anal. 8, 139-153 (1989). MSC: 05A15 05A19 PDF BibTeX XML Cite \textit{L. M. Koganov}, Komb. Anal. 8, 139--153 (1989; Zbl 0733.05004)
Koganov, L. M. Pseudogenerated two-index sequences. (Psevdoporozhdaemye dvukhindeksnye posledovatel’nosti.) (Russian) Zbl 0759.05003 Moskva: Nedra. 88 p. (1989). MSC: 05A10 05A15 05A18 05A99 PDF BibTeX XML Cite \textit{L. M. Koganov}, Psevdoporozhdaemye dvukhindeksnye posledovatel'nosti (Russian). Moskva: Nedra (1989; Zbl 0759.05003)
Koganov, L. M. On a directed graph connected with an ordered pair of ordered partitionings. (Russian) Zbl 0616.05039 Mat. Zametki 41, No. 1, 101-103 (1987). Reviewer: V.Fleischer MSC: 05C20 05A17 PDF BibTeX XML Cite \textit{L. M. Koganov}, Mat. Zametki 41, No. 1, 101--103 (1987; Zbl 0616.05039)
Koganov, L. M. Use of a combinatorial identity for the enumeration of combinations invariant with respect to permutation. (Russian. English summary) Zbl 0614.05007 Čas. Pěstování Mat. 112, 58-65 (1987). MSC: 05A19 05A15 PDF BibTeX XML Cite \textit{L. M. Koganov}, Čas. Pěstování Mat. 112, 58--65 (1987; Zbl 0614.05007) Full Text: EuDML
Koganov, L. M. Interpretation of the permanent as the sum of the weights of the injections of an m-element set into an n-element set (m\(\leq n)\). (English. Russian original) Zbl 0617.05019 Cybernetics 21, 586-591 (1985); translation from Kibernetika 1985, No. 5, 21-24 (1985). Reviewer: S.S.Agayan MSC: 05B20 15A15 PDF BibTeX XML Cite \textit{L. M. Koganov}, Cybernetics 21, 586--591 (1985; Zbl 0617.05019); translation from Kibernetika 1985, No. 5, 21--24 (1985) Full Text: DOI
Koganov, L. M. Factorization operation on hypergraphs. (Russian) Zbl 0658.05058 Stud. Sci. Math. Hung. 19, 213-220 (1984). MSC: 05C65 05C70 PDF BibTeX XML Cite \textit{L. M. Koganov}, Stud. Sci. Math. Hung. 19, 213--220 (1984; Zbl 0658.05058) Full Text: DOI
Koganov, L. M. Some remarks on two classes of dendroids. (Russian) Zbl 0466.05050 Komb. Anal. 5, 70-74 (1980). MSC: 05C65 05C05 PDF BibTeX XML Cite \textit{L. M. Koganov}, Komb. Anal. 5, 70--74 (1980; Zbl 0466.05050)
Vilenkin, N. Ya.; Koganov, L. M. Combinatorial proof of certain identities. (English) Zbl 0416.05012 Math. Notes 24, 658-660 (1979). MSC: 05A19 05B20 PDF BibTeX XML Cite \textit{N. Ya. Vilenkin} and \textit{L. M. Koganov}, Math. Notes 24, 658--660 (1979; Zbl 0416.05012) Full Text: DOI
Vilenkin, N. Ya.; Koganov, L. M. A combinatorial proof of certain identities. (Russian) Zbl 0392.05010 Mat. Zametki 24, 295-299 (1978). MSC: 05A19 05B20 PDF BibTeX XML Cite \textit{N. Ya. Vilenkin} and \textit{L. M. Koganov}, Mat. Zametki 24, 295--299 (1978; Zbl 0392.05010)