He also gave a short elegant proof of Kruskal's tree theorem.
Here is elegant proof that preparations for the future don't have to mean a wrenching break with the past.
This interpretation leads to an elegant proof of the identity via involution.
An elegant direct proof based on comparison of a smooth simple closed curve with an appropriate circle was given by E. Schmidt in 1938.
Among his notable achievements was a short and elegant proof of the soul conjecture.
LoF includes elegant new proofs of the following standard metatheory:
There is an elegant proof using Minkowski's theorem about convex sets.
Einstein's elegant proof was impossibly far from the pressing truth of this elevator.
Crofton's formula yields elegant proofs of the following results, among others:
"Matinee Idylls" is elegant proof that he has learned.