real number

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Unusual Counting Systems

number zero, 0 balloon

Is Zero an Even or an Odd Number?

Discover

Martin Luther King, Jr.

Why We Celebrate MLK Day

African Americans demonstrating for voting rights in front of the White House as police and others watch, March 12, 1965. One sign reads, "We demand the right to vote everywhere." Voting Rights Act, civil rights.

Timeline of the American Civil Rights Movement

International currencies, money, various banknotes, currency

A Brief (and Fascinating) History of Money

Union Jack flag of Great Britain, united kingdom

What’s the Difference Between Great Britain and the United Kingdom?

Secret Service Agent Listens To Earpiece

Secret Service Code Names of 11 U.S. Presidents

Black widow spider

9 of the World’s Deadliest Spiders

pg 229Nazi parade features a banner proclaiming, "Death to Marxism."The possibility of a peaceful Germany after World War I was precluded entirely by the terms of the Versailles Treaty and theintransigent hostility of France and England. Stripped of indu

Were the Nazis Socialists?

real number: Related Content

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Topics

Dedekind cut absolute value continuum power of the continuum number irrational number algebraic number rational number integer complex number golden ratio perfect number significant figures large numbers scientific notation

Key People

Dedekind

Richard Dedekind

German mathematician

Quiz

barometer. Antique Barometer with readout. Technology measurement, mathematics, measure atmospheric pressure

Fun Facts of Measurement & Math