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New posts in discrete-mathematics
Prove that $\sim$ defines an equivalence relation on $\mathbb{Z}$.
discrete-mathematics
relations
equivalence-relations
Maximum number of edges in a simple graph?
combinatorics
discrete-mathematics
graph-theory
Using set notation, define the set of even natural numbers between 100 and 500.
discrete-mathematics
elementary-set-theory
logic
Factorial canceling on expansion of binomial coefficients on Concrete Mathematics
limits
discrete-mathematics
binomial-coefficients
factorial
What is a null set?
elementary-set-theory
discrete-mathematics
Which graphs can be drawn using straight lines with no disjoint edges?
discrete-mathematics
graph-theory
extremal-combinatorics
planar-graphs
Recurrence relation using the master theorem $ T(n) = 4T(n/2) + n^2 \log n$ [duplicate]
algorithms
discrete-mathematics
recurrence-relations
Find non-common elements in lists
python
algorithm
list
set
discrete-mathematics
Is there a general identity for the infinite radicals; $\sqrt{n^{0}+\sqrt{n^{1}+\sqrt{n^{2}+\sqrt{n^{3}+...}}}}$
sequences-and-series
number-theory
discrete-mathematics
radicals
nested-radicals
maximize $\sum_{A\subseteq [q], A\neq \emptyset} \alpha_A \log(|A|)$ with nonlinear constraints
combinatorics
discrete-mathematics
probability-distributions
optimization
convex-optimization
Pigeonhole principle: Coloring $11$ points of a $5\times 5$ square grid
combinatorics
discrete-mathematics
contest-math
pigeonhole-principle
coloring
Find the coefficient of $x^n$ in $(x^2 +x^3 +x^4 +\cdots)^5$
discrete-mathematics
generating-functions
How to calculate equivalence relations
elementary-set-theory
discrete-mathematics
equivalence-relations
How to identify an inverse of 101 modulo 4620
discrete-mathematics
Let $S$ be any set. Prove that $S\setminus\{0\}$ is countable if and only if $S$ is countable
discrete-mathematics
set-theory
Pigeonhole Principle: Among any seven integers, there must be two whose sum or difference is divisible by $10$
combinatorics
discrete-mathematics
pigeonhole-principle
How to approach this discrete graph question about Trees.
discrete-mathematics
graph-theory
trees
What is Double Counting?
combinatorics
discrete-mathematics
permutations
How would you prove $\sum_{i=1}^{n} (3/4^i) < 1$ by induction?
discrete-mathematics
inequality
summation
induction
Using set identities, prove that $\overline A \cup \overline B \cup (A \cap B \cap \overline C)= \overline A \cup \overline B \cup \overline C$
discrete-mathematics
discrete-calculus
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