Vladimir Igorevich Arnold
Walk versus Wait: The Lazy Mathematician Wins
Weierstraß
Weyl geometry in late 20th century physics
What is a superrigid subgroup?
What is Aperiodic Order?
What is good mathematics?
What is special about the divisors of 24?
What scalars should we use ?
When is .999... less than 1?
When is the (co)sine of a rational angle equal to a rational number?
Who Gave you the Cauchy-Weierstrass Tale? The Dual History of Rigorous Calculus
Why I don't like "pure mathematics"
Why prove things?
Yet another proof from the Book: the Gauss theorem on regular polygons
You could simplify calculus
Zeno's Paradoxes. A Cardinal Problem 1. On Zenonian Plurality
Zooming in on infinitesimal 1-.9.. in a post-triumvirate era
Zum 200. Geburtstag von Evariste Galois