# How come Lambda Calculus is a calculus? [duplicate]

Possible Duplicate:
What do Algebra and Calculus mean?

Where are the numbers? derivatives? integrals? limits? If I understand it correctly, lambda calculus is all about symbols. There are no numbers or operators like addition or multiplications except in a very abstract way like Church encoding and alike. The way I see it, it has nothing to do with what we called calculus in high school or university. Insights?

-
It's a "calculus" in the sense of a system of manipulations (like "logical calculus"), not a "calculus" in the sense of "differential calculus" that you're thinking of. –  Alex Nelson Oct 20 '12 at 18:15
If compact Hausdorff spaces are normal, how come $\beta\mathbb N$ is so crazy? :-) Names are just words. –  Asaf Karagila Oct 20 '12 at 19:14
–  MJD Oct 20 '12 at 19:15