# Linkage

The Tutte–Coxeter graph and its construction from the outer automorphisms of \( S_6 \) (G+)

Question: how many arXiv papers are updated to their final journal versions? (Answer: about half of them have non-empty journal-reference metadata; G+)

Keleti's conjecture on the ratio of perimeter to area of a union of unit squares (G+)

Reference for mixed graph acyclicity testing? (Still not adequately answered, but the bounty has since expired; G+)

Six-tetrahedron kaleidocycles don't work (but it takes a computer simulation to demonstrate it, because paper ones do; G+)

The new single-divisible-vote last-place-elimination scheme for Hugo nominations (or as they call it, e pluribus Hugo; G+)

Wikipedia blocked in Russia over its refusal to take down information about illegal drugs (since unblocked; G+)

Six points in general position in 3d can be partitioned into triples determining two linked circles (G+)

Boulet imagines what physicists in a pixelated world might think of it (G+)

Just because a formula looks mathy doesn't mean it makes any sense (G+)

Google teaches spammers how to break security to get their ads through (G+)

Constructing the Golay error-correcting code from a great dodecahedron (G+)