Ryshkov, S. S.; Bol’shakova, E. A. On the theory of mainstay parallelohedra. (English. Russian original) Zbl 1104.51012 Izv. Math. 69, No. 6, 1257-1277 (2005); translation from Izv. Ross. Akad. Nauk, Ser. Mat. 69, No. 6, 187-210 (2005). MSC: 51M20 51H20 11H55 11H31 52C17 52C07 11H06 PDFBibTeX XMLCite \textit{S. S. Ryshkov} and \textit{E. A. Bol'shakova}, Izv. Math. 69, No. 6, 1257--1277 (2005; Zbl 1104.51012); translation from Izv. Ross. Akad. Nauk, Ser. Mat. 69, No. 6, 187--210 (2005) Full Text: DOI
Ryshkov, S. S. A direct geometric description of the \(n\)-dimensional Voronoi parallelohedra of second type. (English. Russian original) Zbl 0941.51015 Russ. Math. Surv. 54, No. 1, 264-265 (1999); translation from Usp. Mat. Nauk 54, No. 1, 263-264 (1999). Reviewer: G.Gogishvili (Tbilisi) MSC: 51H20 11H55 PDFBibTeX XMLCite \textit{S. S. Ryshkov}, Russ. Math. Surv. 54, No. 1, 264--265 (1999; Zbl 0941.51015); translation from Usp. Mat. Nauk 54, No. 1, 263--264 (1999) Full Text: DOI
Ryshkov, S. S.; Erdahl, R. M. Dual systems of integer vectors (general questions and applications to the geometry of positive quadratic forms). (English. Russian original) Zbl 0774.52009 Math. USSR, Sb. 74, No. 2, 541-554 (1993); translation from Mat. Sb. 182, No. 12, 1796-1821 (1991). MSC: 52C07 11H55 PDFBibTeX XMLCite \textit{S. S. Ryshkov} and \textit{R. M. Erdahl}, Math. USSR, Sb. 74, No. 2, 541--554 (1993; Zbl 0774.52009); translation from Mat. Sb. 182, No. 12, 1796--1821 (1991) Full Text: DOI
Ryshkov, S. S.; Erdahl, R. M. Dual systems of integral vectors. (General questions, applications to the geometry of positive quadratic forms). (Russian) Zbl 0751.52007 Mat. Sb. 182, No. 12, 1796-1821 (1991). Reviewer: Á.G.Horváth (Budapest) MSC: 52C07 11H55 PDFBibTeX XMLCite \textit{S. S. Ryshkov} and \textit{R. M. Erdahl}, Mat. Sb. 182, No. 12, 1796--1821 (1991; Zbl 0751.52007) Full Text: EuDML
Ryshkov, S. S.; Erdahl, R. M. Dual systems of integer vectors and their applications to the theory of \((0,1)\)-matrices. (English. Russian original) Zbl 0833.11028 Proc. Steklov Inst. Math. 196, 179-193 (1992); translation from Tr. Mat. Inst. Steklova 196, 161-173 (1991). MSC: 11H55 11H31 52C07 PDFBibTeX XMLCite \textit{S. S. Ryshkov} and \textit{R. M. Erdahl}, Proc. Steklov Inst. Math. 196, 179--193 (1991; Zbl 0833.11028); translation from Tr. Mat. Inst. Steklova 196, 161--173 (1991)
Ryshkov, S. S.; Erdahl, R. M. Dual systems of integer vectors and their applications. (English. Russian original) Zbl 0833.11027 Sov. Math., Dokl. 42, No. 2, 366-371 (1991); translation from Dokl. Akad. Nauk SSSR 314, No. 1, 123-128 (1990). MSC: 11H55 52C07 11H31 PDFBibTeX XMLCite \textit{S. S. Ryshkov} and \textit{R. M. Erdahl}, Sov. Math., Dokl. 42, No. 2, 366--371 (1990; Zbl 0833.11027); translation from Dokl. Akad. Nauk SSSR 314, No. 1, 123--128 (1990)
Ryshkov, S. S.; Erdahl, R. M. The empty sphere. II. (English) Zbl 0653.10027 Can. J. Math. 40, No. 5, 1058-1073 (1988). Reviewer: R. M. Erdahl MSC: 11H55 11H31 PDFBibTeX XMLCite \textit{S. S. Ryshkov} and \textit{R. M. Erdahl}, Can. J. Math. 40, No. 5, 1058--1073 (1988; Zbl 0653.10027) Full Text: DOI
Ryshkov, S. S.; Umarov, M. Kh. Construction of finite faces of the polyhedron of \(\mu _ n(m)\) for \(n\leq 4\). (Russian) Zbl 0653.10028 Stud. Sci. Math. Hung. 22, No. 1-4, 115-121 (1987). Reviewer: G. Gogishvili MSC: 11H55 11H31 PDFBibTeX XMLCite \textit{S. S. Ryshkov} and \textit{M. Kh. Umarov}, Stud. Sci. Math. Hung. 22, No. 1--4, 115--121 (1987; Zbl 0653.10028)
Erdahl, R. M.; Ryshkov, S. S. The empty sphere. (English) Zbl 0643.10025 Can. J. Math. 39, No. 4, 794-824 (1987). Reviewer: P.Gruber MSC: 11H55 11H31 PDFBibTeX XMLCite \textit{R. M. Erdahl} and \textit{S. S. Ryshkov}, Can. J. Math. 39, No. 4, 794--824 (1987; Zbl 0643.10025) Full Text: DOI
Ryshkov, S. S.; Baranovskij, E. P. Perfect lattices as admissible centerings. (English) Zbl 0624.10024 J. Sov. Math. 37, 1155-1183 (1987). MSC: 11H55 11H06 52C07 11H31 52C17 PDFBibTeX XMLCite \textit{S. S. Ryshkov} and \textit{E. P. Baranovskij}, J. Sov. Math. 37, 1155--1183 (1987; Zbl 0624.10024) Full Text: DOI
Baranovskiĭ, E. P.; Ryshkov, S. S. Derivation of perfect lattices from admissible centerings. (English. Russian original) Zbl 0588.10032 Russ. Math. Surv. 40, No. 4, 155-156 (1985); translation from Usp. Mat. Nauk 40, No. 4(244), 139-140 (1985). Reviewer: Peter M. Gruber (Wien) MSC: 11H55 11H31 52C17 PDFBibTeX XMLCite \textit{E. P. Baranovskiĭ} and \textit{S. S. Ryshkov}, Russ. Math. Surv. 40, No. 4, 155--156 (1985; Zbl 0588.10032); translation from Usp. Mat. Nauk 40, No. 4(244), 139--140 (1985) Full Text: DOI
Ryshkov, S. S.; Shushbaev, S. Sh. Construction of the L-partition for the second perfect lattice. (English) Zbl 0502.52014 Math. USSR, Sb. 44, 195-206 (1983). MSC: 52C07 52C17 11H31 11H55 PDFBibTeX XMLCite \textit{S. S. Ryshkov} and \textit{S. Sh. Shushbaev}, Math. USSR, Sb. 44, 195--206 (1983; Zbl 0502.52014) Full Text: DOI
Ryshkov, S. S.; Shushbaev, S. Sh. Construction of the L-partition for the second perfect lattice. (English) Zbl 0481.52008 Mat. Sb., N. Ser. 116(158), 218-231 (1981). MSC: 52C07 52C17 11H55 11H31 PDFBibTeX XMLCite \textit{S. S. Ryshkov} and \textit{S. Sh. Shushbaev}, Mat. Sb., Nov. Ser. 116(158), 218--231 (1981; Zbl 0481.52008) Full Text: EuDML
Ryshkov, S. S. The geometry of positive quadratic forms. (English) Zbl 0367.10028 Am. Math. Soc., Translat., II. Ser. 109, 27-32 (1977). MSC: 11H55 11H06 11H31 PDFBibTeX XMLCite \textit{S. S. Ryshkov}, Transl., Ser. 2, Am. Math. Soc. 109, 27--32 (1977; Zbl 0367.10028) Full Text: DOI
Ryshkov, S. S.; Baranovskii, E. P. \(C\)-types of \(n\)-dimensional lattices and 5-dimensional primitive parallelohedra (with application to the theory of coverings). (English. Russian original) Zbl 0419.10031 Proc. Steklov Inst. Math. 137, 140 p. (1976); translation from Tr. Mat. Inst. Steklov 137, 131 p. (1976). MSC: 11H31 11H55 52C17 PDFBibTeX XML
Ryshkov, S. S. Geometry of positive quadratic forms. (Russian) Zbl 0335.10033 Proc. int. Congr. Math., Vancouver 1974, Vol. 1, 501-506 (1975). MSC: 11H55 11H06 11H31 PDFBibTeX XML
Ryshkov, S. S. On the question of final \(\zeta\)-optimality of lattices providing the closest lattice packing of \(n\)-dimensional spheres. (English) Zbl 0282.10020 Sib. Math. J. 14(1973), 743-750 (1974). MSC: 11H31 11M35 11H50 11H55 PDFBibTeX XMLCite \textit{S. S. Ryshkov}, Sib. Math. J. 14, 743--750 (1974; Zbl 0282.10020) Full Text: DOI
Baranovskij, E. P.; Ryshkov, S. S. Primitive five-dimensional parallelehedra. (English. Russian original) Zbl 0291.10025 Sov. Math., Dokl. 14, 1391-1395 (1973); translation from Dokl. Akad. Nauk SSSR 212, 532-535 (1973). MSC: 11H55 11H06 11H31 PDFBibTeX XMLCite \textit{E. P. Baranovskij} and \textit{S. S. Ryshkov}, Sov. Math., Dokl. 14, 1391--1395 (1973; Zbl 0291.10025); translation from Dokl. Akad. Nauk SSSR 212, 532--535 (1973)
Ryshkov, S. S. C-type of \(n\)-dimensional parallelehedra. (English. Russian original) Zbl 0291.10024 Sov. Math., Dokl. 14, 1314-1318 (1973); translation from Dokl. Akad. Nauk SSSR 212, 46-49 (1973). MSC: 11H55 11H06 11H31 PDFBibTeX XMLCite \textit{S. S. Ryshkov}, Sov. Math., Dokl. 14, 1314--1318 (1973; Zbl 0291.10024); translation from Dokl. Akad. Nauk SSSR 212, 46--49 (1973)
Ryshkov, S. S. Zur Frage der finalen \(\zeta\)-Optimalität von Gittern, die die allerdichteste Gitterpackung \(n\)-dimensionaler Kugeln ergeben. (Russian) Zbl 0272.10016 Sib. Mat. Zh. 14, 1065-1075 (1973). MSC: 11H31 11M35 11H55 11H50 PDFBibTeX XMLCite \textit{S. S. Ryshkov}, Sib. Mat. Zh. 14, 1065--1075 (1973; Zbl 0272.10016)