Numeros

Who Is the Luckiest NHL Team?

The Math of the Dumbest Record in Sports

The Crazy Math of the NYC Championship Drought

The Crazy Math of the Canadian Cup Drought

This Guy Revolutionized Math Education (And Really Liked Frogs!)

Why This Mathematician Is on the Colombian Bill

The Man Who Was Good at Everything

Proving that min{a, b} = (a + b - |a - b|)/2

Verifying that e^(2πinθ/L) is L-Periodic

An orientation where the deg⁺(v) = deg⁻(v) in an Eulerian graph

A mutual vertex in every subtree if all subtrees have a non-empty intersection

There exists a vertex contained in every maximum length path in a tree

Existence of a non-leaf vertex adjacent to at most one non-leaf

9 points of intersection of the same colour on the xy grid

ordₙ(ab) = ordₙ(a)ordₙ(b) if ordₙ(a) and ordₙ(b) are co-prime

Position in a deck of cards and minimum number of shuffles

Minimum Shipping Cost from production centers to markets

Proving Fₙ₊₁Fₙ₋₁ = Fₙ² - (-1)ⁿ

Proving R(3, 4) = 9

Proving that a prime 2n + 1 divides 2ⁿ - 1 or 2ⁿ + 1

Showing that any positive integer greater than 1 does not divide 2ⁿ - 1

Computing expected profit for a taxi driver travelling in two different zones

Proving the Annihilator is an Ideal

Proving (-1)² = 1 in a ring with unity 1 and additive inverse -1

Determining what proportion of vehicles on the road are trucks

Identifying transient and recurrent classes given a transition probability matrix

Expressing NapLog(xy) and NapLog(x/y) in terms of NapLogx and NapLogy

Determining area of Shoemaker's Knife

Proving that countable subsets of ℝ have measure zero

Showing that the sum of squares from 1 to n equals n(n+1)(n+2)/6