New posts in algebraic-combinatorics

Proving an identity for complete homogenous symmetric polynomials

combinatorics symmetric-polynomials symmetric-functions algebraic-combinatorics

why $\frac{f_n}{f_kf_{n-k}}$ is an integer for this sequence

sequences-and-series number-theory fibonacci-numbers algebraic-combinatorics

Does in plane exist $22$ points and $22$ such circles that each circle contains at least $7$ points and each point is on at least $7$ circles.

linear-algebra combinatorics matrices contest-math algebraic-combinatorics

Motivation/intuition behind using linear algebra behind these combinatorics problem

linear-algebra combinatorics algebraic-combinatorics

Intuition behind picking group actions and Sylow

group-theory soft-question group-actions sylow-theory algebraic-combinatorics

Property of a polynomial with no positive real roots

polynomials roots algebraic-combinatorics

Hartshorne Problem 1.2.14 on Segre Embedding

algebraic-geometry commutative-algebra invariant-theory algebraic-combinatorics

Combinatorial interpretation of an alternating binomial sum

combinatorics summation binomial-coefficients combinatorial-proofs algebraic-combinatorics

A conference uses $4$ main languages. Prove that there is a language that at least $\dfrac{3}{5}$ of the delegates know.

combinatorics discrete-mathematics contest-math extremal-combinatorics algebraic-combinatorics

Family of sets with $|F_i| \equiv 2\pmod 3$ and $|F_i \cap F_j| \equiv 0 \pmod 3$

linear-algebra combinatorics finite-fields extremal-combinatorics algebraic-combinatorics

Identity involving partitions of even and odd parts.

combinatorics integer-partitions algebraic-combinatorics

Undergrad-level combinatorics texts easier than Stanley's Enumerative Combinatorics?

combinatorics reference-request book-recommendation algebraic-combinatorics