@MISC{NEWTON.MIZ,
  AUTHOR = {Kwiatek, Rafa{\l}},
  TITLE = {Factorial and {N}ewton Coefficients},
  DAY = {27},
  MONTH = {July},
  YEAR = {1990},
  ADDRESS1 = {Nicolaus Copernicus University\\Toru\'n},
  SUMMARY = {We define the following functions: exponential function (for natural
exponent), factorial function and Newton coefficients. We prove
some basic properties of notions introduced.
There is also a proof of binominal
formula. We prove also that $\sum_{k=0}^n {n \choose k}=2^n$.}}

