threshold-combined

Adding blur and threshold distorts the dual graph.

Sam is a PhD student at Durham Univeristy working on structures in the solar wind. His pastimes include pestering Clare about Linux and making Adam feel old. Seriously, who remembers the 90s?

Chalkdust dissertation prize 2025
Calling all final-year students! This is your opportunity to get your work published as a Chalkdust article.
A symmetric universe
Sam Kay reflects on building a universe
The big argument: Should we write another issue?
How much barrel is left to scrape?
The big argument: What’s the best way to end a proof?
QED or $\square$?
Chalkdust issue 15 – Coming 25 May
Roll up, roll up! Squid Game, hidden harmonies and DnD coming your way in Issue 15. (Plus all the usual nonsense.)
Top Ten: Mathematical symbols
It's time to reveal the Top Ten Symbols in Algebra!