Found 92 Documents (Results 1–92)
Frames and doubly resolvable group divisible designs with block size three and index two. (English) Zbl 1533.05035
Reviewer: Giovanni Falcone (Udine)
On dominating graph of graphs, median graphs, partial cubes and complement of minimal dominating sets. (English) Zbl 1531.05192
Reviewer: Doost Ali Mojdeh (Bābolsar)
Minimizing visible edges in polyhedra. (English) Zbl 1527.52008
Reviewer: Gordon Williams (Fairbanks)
Partition lattice with limited block sizes. (English) Zbl 07583962
MSC:
06C10
Block-transitive 3-designs with block size at most 6. (English) Zbl 1504.05029
Reviewer: Stela Zhelezova (Veliko Tarnovo)
The crossing number of twisted graphs. (English) Zbl 1497.05050
Reviewer: Xueliang Li (Tianjin)
On \((1,C_4)\) one-factorization and two orthogonal \((2,C_4)\) one-factorizations of complete graphs. (English) Zbl 1479.05305
The conjecture on the crossing number of \(K_{1, m, n}\) is true if Zarankiewicz’s conjecture holds. (English) Zbl 1470.05045
MSC:
05C10
On \(L\)-close Sperner systems. (English) Zbl 1470.05158
MSC:
05D05
Decompositions of some classes of dense graphs into cycles of lengths 4 and 8. (English) Zbl 1469.05141
MSC:
05C70
Discrete geometry on colored point sets in the plane – a survey. (English) Zbl 1459.05032
MSC:
05B25
On existence of two classes of generalized Howell designs with block size three and index two. (English) Zbl 1459.05026
Reviewer: Charles J. Colbourn (Tempe)
Stirling pairs of permutations. (English) Zbl 1442.05004
MSC:
05A05
On the \(\mathrm{PSU}(4,2)\)-invariant vertex-transitive strongly regular \((216, 40, 4, 8)\) graph. (English) Zbl 1444.05154
Reviewer: Steven T. Dougherty (Scranton)
Alternating sign matrices: extensions, König-properties, and primary sum-sequences. (English) Zbl 1434.05030
MSC:
05B20
Constructing graphs which are permanental cospectral and adjacency cospectral. (English) Zbl 1402.05143
Bounding the independence number in some \((n,k,\ell,\lambda)\)-hypergraphs. (English) Zbl 1402.05162
Total colorings of product graphs. (English) Zbl 1388.05065
Reviewer: László A. Székely (Columbia)
Relationships between the 2-metric dimension and the 2-adjacency dimension in the lexicographic product of graphs. (English) Zbl 1353.05106
The simultaneous metric dimension of families composed by lexicographic product graphs. (English) Zbl 1349.05095
Fair 1-factorizations and fair holey 1-factorizations of complete multipartite graphs. (English) Zbl 1342.05037
Constructing the spectrum of packings and coverings for the complete graph with stars with up to five edges. (English) Zbl 1339.05305
MSC:
05C70
Existence of Yang Hui type magic squares. (English) Zbl 1322.05029
MSC:
05B15
The spectrum \(\mathrm{Meta}(H>T,\lambda)\) for some subgraphs \(H\) and \(T\) of \(K_4\). (English) Zbl 1298.05219
MSC:
05C51
The existence of \(\mathrm{FrGBTD}(4,g^u)\)s. (English) Zbl 1298.05044
MSC:
05B05
On a family of conjectures of Joel Lewis on alternating permutations. (English) Zbl 1296.05002
Reviewer: William G. Brown (Montréal)
MSC:
05A05
Zero divisors among digraphs. (English) Zbl 1292.05221
The Hamilton-Waterloo problem with 4-cycles and a single factor of \(n\)-cycles. (English) Zbl 1282.05189
The existence of \((K_2\times K_6)\)-designs. (English) Zbl 1272.05017
MSC:
05B30
Super-simple resolvable balanced incomplete block designs with block size 4 and index 4. (English) Zbl 1272.05010
MSC:
05B05
Helly numbers of polyominoes. (English) Zbl 1272.05024
MSC:
05B50
Lattice points on similar figures and conics. (English) Zbl 1235.52006
MSC:
52A10
On partitioning the edge set of a graph into internally disjoint paths without exterior vertices. (English) Zbl 1235.05115
2-spreads and transitive and orthogonal 2-parallelisms of \(PG(5, 2)\). (English) Zbl 1227.51003
Reviewer: Basri Çelik (Nilüfer-Bursa)
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