Question

Counting the directed paths in a particular directed graph

score 308 · Answer 1 · 2026-04-14 21:56:09

308

Views

Counting the directed paths in a particular directed graph

Published on 14 Apr 2026 - 21:56

score 128 · Answer 2 · 2026-04-14 15:13:03

128

Views

if modular inverse is injective or not

Published on 14 Apr 2026 - 15:13

score 51 · Answer 3 · 2026-04-14 08:44:41

51

Views

Equivalence relation! Make formula saying that R is not an equivalence relation

Published on 14 Apr 2026 - 8:44

score 2.3k · Answer 4 · 2026-04-13 09:56:03

2.3k

Views

Combinatorial proof $\sum_{i=k}^n {i-1 \choose k-1} = {n \choose k}$

Published on 13 Apr 2026 - 9:56

score 146 · Answer 5 · 2026-04-17 09:36:10

146

Views

Matching of size at least $\frac{|E(G)|}{3}$ in the line graph $L(G)$ of a graph $G$

Published on 17 Apr 2026 - 9:36

score 59 · Answer 6 · 2026-03-26 20:25:50

59

Views

Discrete mathematics, defining (+, *) operations on a equivalence relations.

Published on 26 Mar 2026 - 20:25

score 49 · Answer 7 · 2026-04-12 09:23:54

49

Views

Given two posets $\preccurlyeq$, prove that the following relation $R$ using both of them is transitive

Published on 12 Apr 2026 - 9:23

score 46 · Answer 8 · 2026-04-14 10:38:21

46

Views

Enumerating the image of an integer matrix applied to a lattice

Published on 14 Apr 2026 - 10:38

score 4.9k · Answer 9 · 2026-04-15 06:23:56

4.9k

Views

Can a tree graph have only one vertex? And if so, that means that a tree graph has at minimum one leaf?

Published on 15 Apr 2026 - 6:23

score 264 · Answer 10 · 2026-04-12 10:11:49

264

Views

Need Help With Elementary Proof

Published on 12 Apr 2026 - 10:11

score 254 · Answer 11 · 2026-04-11 02:44:32

254

Views

Expected Value for defined Random Variables $X$ and $Y$

Published on 11 Apr 2026 - 2:44

score 340 · Answer 12 · 2026-04-10 19:01:47

340

Views

Discrete Probability: Expected Value and Random Variable independence

Published on 10 Apr 2026 - 19:01

score 113 · Answer 13 · 2026-04-09 05:53:08

113

Views

How to find the best fit point inside a cluster?

Published on 09 Apr 2026 - 5:53

score 207 · Answer 14 · 2026-04-07 19:19:06

207

Views

Permutation and combination Number of Bits Problem

Published on 07 Apr 2026 - 19:19

score 161 · Answer 15 · 2026-04-10 21:27:04

161

Views

How to solve xor equations with multiple variable?

Published on 10 Apr 2026 - 21:27

List Question

Counting the directed paths in a particular directed graph

if modular inverse is injective or not

Equivalence relation! Make formula saying that R is not an equivalence relation

Combinatorial proof $\sum_{i=k}^n {i-1 \choose k-1} = {n \choose k}$

Matching of size at least $\frac{|E(G)|}{3}$ in the line graph $L(G)$ of a graph $G$

Discrete mathematics, defining (+, *) operations on a equivalence relations.

Given two posets $\preccurlyeq$, prove that the following relation $R$ using both of them is transitive

Enumerating the image of an integer matrix applied to a lattice

Can a tree graph have only one vertex? And if so, that means that a tree graph has at minimum one leaf?

Need Help With Elementary Proof

Expected Value for defined Random Variables $X$ and $Y$

Discrete Probability: Expected Value and Random Variable independence

How to find the best fit point inside a cluster?

Permutation and combination Number of Bits Problem

How to solve xor equations with multiple variable?

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