- integers with operations of addition,
subtraction, multiplication; see the examples of big
integers
- integers under modular arithmetic
where m is a positive integer
- rational numbers with operations of
addition, subtraction, multiplication and division; see the
examples of rational numbers
- Gaussian
integers, i.e., complex numbers which have integer real and
imaginary parts; see the complex numbers examples
- algebraic extension
field; the algebraic number is defined by the
polynomial with integer coefficients which can be
represented precisely; the algebraic number is a
root of the polynomial , e.g., is represented by the polynomial and
the algebraic number could be defined by the
polynomial ; see the examples of
algebraic numbers
- floating point numbers with a
precision of decimal digits where
is an arbitrary positive integer--it can be or
; see the examples of big floating
point numbers

Richard Liska