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New posts in integer-lattices
Elementary proof that if $A$ is a matrix map from $\mathbb{Z}^m$ to $\mathbb Z^n$, then the map is surjective iff the gcd of maximal minors is $1$
abstract-algebra
modules
determinant
integer-lattices
Probability that a random pair of points are opposite corners of a square in an $n\times n$ integer lattice
probability
combinatorics
geometry
integer-lattices
Pick's Theorem on a triangular (or hex) grid
geometry
discrete-geometry
integer-lattices
Index of a sublattice in a lattice and a homomorphism between them
abstract-algebra
group-theory
integer-lattices
How can I find the number of the shortest paths between two points on a 2D lattice grid?
combinatorics
graph-theory
integer-lattices
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