 93
 93
 10 11 15
Adjacency matrix 83
Antichain 77
Arborescence 82
Assignment problem 77
Binomial coefficient 1 2
Block design 93
Block design with repeated blocks 99 125
C-matrix 97 120
Chebyshev polynomial 10
Combinations 1
Convex cone 65 80
Convex space 80
Cyclic code 89
De Bruijn sequence 82
De Bruijn sequence, shortened 88
Derangement 6
Desargues' theorem 105
Difference set 103
Dilworth's Theorem 77
Equidistant code 89
Eulerian graph 82
Feedback shift register 87
Ferrers graph 36
Finite geometry 105
Ford sequence 85
Free projective plane 106
Friendship theorem 96
Generating function 21 27
Hadamard matrix 91 97 120
Incidence algebra 11
Inclusion - exclusion 4
| Independent set 44
Latin squares, incomplete 62
Latin squares, orthogonal 111
Latin squares, partial 62
Matching 62
Menage numbers 7 15
Moebius inversion 12 13
Near-field 108
Orthogonal Latin squares 111
Oval 111
Pappus' theorem 105
Partitions 33
Partitions, conjugate 37
Permanent 4 54
Permutation 15 30
Permutation, with restricted positions 15
Primitive repetition design (RPD) 100 125
Pseudo-noise sequence (PN-sequence) 90 103
Ramsey's theorem 69
Recursion 21 52
Reflection principle 22
Root 21
S-matrix 97 120
SDR 40 50
Shift register sequence 87
SIR 44
span 49
Steiner triple system (STS) 126
Stirling numbers 27
Stirling numbers, relations for 28
Transversal system 111
TREE 21
Turan's theorem 74
Up-down code 24
Van der Waerden conjecture 58
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