en.wikipedia.org/wiki/Number

A number is a mathematical object used to count, measure, and label. The
original examples ... For example, in Western society the number 13 is regarded
as unlucky, and "a ... Today, number sys...

math.stackexchange.com/questions/285520/where-exactly-are-complex-numbers-used-in-the-real-world

Jan 24, 2013 ... So what practical applications of complex numbers exist and what ... of the
complex analysis is used for something meaningful in the real world.

mathforum.org/library/drmath/sets/select/dm_imaginary.html

Imaginary Numbers in Real Life, a selection of answers from the Dr. Math ... of
Imaginary Numbers: Where are imaginary numbers used today in real life, as in ...

galileospendulum.org/2012/06/09/imaginary-numbers-are-real/

Jun 9, 2012 ... Imaginary and complex numbers are handicapped by the name we gave them. ...
made up, perhaps not useful; "complex" similarly seems to argue the numbers
are too hard to use. ... In fact, today is the birthday of mathematician Caspar
Wessel who characterized the complex plane. .... Science and Society.

www.albany.edu/news/12316.php

... appearance in many other areas of mathematics, such as complex numbers (
obtained by introducing the square root ... Q: How is Pi relevant to society today?

plus.maths.org/content/101-uses-quadratic-equation-part-ii

May 1, 2004 ... Differential equations are at the heart of nearly all modern ... and this is the
approach generally used for the very complex differential equations .... Using a
combination of real and imaginary numbers, known as complex ...

uncyclopedia.wikia.com/wiki/Complete_list_of_applications_of_trigonometry_in_today's_society

Complete list of applications of trigonometry in today's society ... one is compelled
by the mystic combination of numbers and symbols that fit together in ... By using
a complex series of integral proofs, the Laureate disposed of each item one ...

www.dpmms.cam.ac.uk/~wtg10/reals.html

A dialogue concerning the need for the real number system. ... rationals, reals,
complex numbers) the biggest jump in sophistication is that between Q ... S. I was
looking at a maths book today and saw a whole lot of complicated stuff ..... own
are a bit restrictive because there are plenty of useful numbers such as root two, ...

www.maa.org/external_archive/devlin/devlin_0708_08.html

What worried me were some blog entries and a number of emails I received ...
the more basic, earlier method, that people used for hundreds of years, and then
... as repeated addition (though I suspect not), but in today's world, that is
definitely not ... is no way they can lead informed lives and contribute adequately
to society.

www.britannica.com/topic/modern-algebra

Sep 6, 2012 ... In itself a set is not very useful, being little more than a well-defined collection of
.... (An algebraic integer is a complex number satisfying an algebraic .... to the
features of society and culture that decisively distinguish humans.