Quotes About Cauchy

Cauchy was not interested in the needs of engineers. Cauchy was interested in the truth.

In making the basis of the calculus more rigorously formal, Weierstrass also attacked the appeal to intuition of continuous motion which is implied in Cauchy's expression -- that a variable approaches a limit.

if, for each t, we write u(t) for the function from to that takes x to u(x, t), then it describes how the function u(t) "evolves" over time. The Cauchy problem for an evolution equation is the problem of determining this evolution from knowledge of its initial value u(0).