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15
Math.TechQA.Club
2026-03-25 13:59:45
52
Views
Finding a bound for the number of cards in a deck
Published on
25 Mar 2026 - 13:59
#combinatorics
#combinatorial-designs
#finite-geometry
42
Views
How many different $2n$-block $A_i$ can we construct such that $|A_i\cap A_j|=n$?
Published on
18 Sep 2021 - 15:12
#combinatorics
#combinatorial-designs
336
Views
How to find a set of combinations of 5 that cover all the combinations of 3 once?
Published on
09 Oct 2021 - 22:54
#combinatorics
#algorithms
#combinatorial-designs
111
Views
Edge cover in a regular uniform hypergraph
Published on
25 Mar 2026 - 21:45
#combinatorics
#graph-theory
#discrete-optimization
#combinatorial-designs
#hypergraphs
31
Views
How to find the maximum number of edges that exactly contain x vertices in a k-uniform hypergraph？
Published on
25 Mar 2026 - 21:49
#combinatorics
#discrete-mathematics
#combinatorial-designs
#hypergraphs
25
Views
The goal is to obtain the minimum number of subsets of size s from a set of items of size a, so that pair of items should appear in exactly n subsets
Published on
14 Nov 2021 - 9:36
#algorithms
#combinatorial-designs
170
Views
Combinatorial design to compress a Boolean lattice without confusing small sets
Published on
26 Nov 2021 - 22:23
#combinatorics
#reference-request
#coding-theory
#combinatorial-designs
138
Views
To find the minimum number of $3$-toppings pizza so that it meets the demand of my friend!
Published on
18 Dec 2021 - 3:55
#combinatorics
#discrete-mathematics
#recreational-mathematics
#pigeonhole-principle
#combinatorial-designs
277
Views
Maximally unique beach volleyball games
Published on
02 Jan 2022 - 16:46
#combinatorics
#graph-theory
#optimization
#combinatorial-designs
392
Views
how to construct a binary matrix with given row and column distribution
Published on
04 Jan 2022 - 2:53
#combinatorics
#matrices
#graph-theory
#coding-theory
#combinatorial-designs
32
Views
traffic assignment
Published on
15 Jan 2022 - 4:27
#graph-theory
#algorithms
#discrete-optimization
#np-complete
#combinatorial-designs
50
Views
Latin squares with one cycle type?
Published on
26 Mar 2026 - 4:14
#permutations
#combinatorial-designs
#latin-square
111
Views
In search of the most symmetric Steiner quadruple systems
Published on
01 Feb 2022 - 16:16
#combinatorics
#group-theory
#automorphism-group
#combinatorial-designs
309
Views
Number of triangles in $K_n$ that don't share any edges
Published on
05 Feb 2022 - 20:43
#combinatorics
#graph-theory
#extremal-combinatorics
#combinatorial-designs
#extremal-graph-theory
166
Views
Number of 3-element subsets with only 1 common element
Published on
14 Feb 2022 - 21:43
#set-theory
#combinations
#extremal-combinatorics
#combinatorial-designs
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