Newbetuts

Graphs: How to prove that chromatic number of graph $G$ is $2^k$ if and only is $G$ is union of $k$ bipartite graphs?

Probability that sum of integer reciprocals is larger than a fixed number.

(Finitely) decimal expressible real numbers between [0,1] countable?

Prove by induction that $5^n - 1$ is divisible by $4$.

Bounding $A(n,d)=\max\{M|$exists a code with parameters $n$,$M$,$d\}$

What's the most efficient way to put all the stones in one pile?

How and what to teach on a first year elementary number theory course?

The truth value of $(P):(\exists m \in \mathbb{Z}) (\forall y\in \mathbb{Q}) : my\in\mathbb{N}$

Is $K_6$ a minor of $K_{2,2,2,2,2}$

What is the most unambiguous digraph representation of NAND/NOR?

Recursive problem - Staircase

Minimum distance of a linear code and its relation with a control matrix of the code

$G=(I_{k}|A)$ is a generator matrix of $\mathcal{C}$ iff $H=(-A^{T}|I_{n-k})$ is a control matrix of $\mathcal{C}$

Help with a recurrence with even and odd terms [duplicate]

Proof that $f(a)$ = $a$ div $d$ is onto

How would you go about learning the combination of coins the man has?

Prove that at most one vertex can have degree at least |V |/2 + 1. [closed]

New posts in discrete-mathematics

Coupon Problem generalized, or Birthday problem backward.

Combinatorics Pigeonhole problem

Number of permutations with restrictions

Graphs: How to prove that chromatic number of graph $G$ is $2^k$ if and only is $G$ is union of $k$ bipartite graphs?

Probability that sum of integer reciprocals is larger than a fixed number.

(Finitely) decimal expressible real numbers between [0,1] countable?

Prove by induction that $5^n - 1$ is divisible by $4$.

Bounding $A(n,d)=\max\{M|$exists a code with parameters $n$,$M$,$d\}$

What's the most efficient way to put all the stones in one pile?

How and what to teach on a first year elementary number theory course?

The truth value of $(P):(\exists m \in \mathbb{Z}) (\forall y\in \mathbb{Q}) : my\in\mathbb{N}$

Is $K_6$ a minor of $K_{2,2,2,2,2}$

What is the most unambiguous digraph representation of NAND/NOR?

Recursive problem - Staircase

Minimum distance of a linear code and its relation with a control matrix of the code

$G=(I_{k}|A)$ is a generator matrix of $\mathcal{C}$ iff $H=(-A^{T}|I_{n-k})$ is a control matrix of $\mathcal{C}$

Help with a recurrence with even and odd terms [duplicate]

Proof that $f(a)$ = $a$ div $d$ is onto

How would you go about learning the combination of coins the man has?

Prove that at most one vertex can have degree at least |V |/2 + 1. [closed]