Lagrange’s four-square theorem

Table of Contents

Introduction References & Edit History Quick Facts & Related Topics

Images

Joseph-Louis Lagrange, engraving by Robert Hart

Read Next

bunch of numbers

Unusual Counting Systems

Blackboard inscribed with scientific formulas and calculations in physics and mathematics

The World Science Festival’s Pioneers in Science

Spiral Galaxy type Sa-Sb or Sa/Sb in the constellation Virgo. The majestic Sombrero Galaxy Messier 104 (M104) or NGC 4594. The team took six pictures of the galaxy, stitched them together to create the final composite image. Photo from May-June 2003

9 Britannica Articles That Explain the Meaning of Life

number zero, 0 balloon

Is Zero an Even or an Odd Number?

Laboratory glassware (beakers)

5 Quizzes That Will Tell You Whether You Should Have Been a Scientist

Discover

Fish. Lionfish. Lion-fish. Turkey fish. Fire-fish. Red lionfish. Pterois volitans. Venomous fin spines. Coral reefs. Underwater. Ocean. Red lionfish swims by seaweed.

10 of the World’s Most Dangerous Fish

Ahura Mazda - relief of the Zoroastrian god Ahura Mazda at the ancient ruins of Persepolis in Iran. Also known as Ormazd Zoroastrianism,

Which Religion Is the Oldest?

Titanic infographic. The 30th anniversary of its discovery is September 1, 2015. SPOTLIGHT VERSION.

Timeline of the Titanic’s Final Hours

July, 2006, Launch of Space Shuttle Discovery STS-121. See attached for full caption information.

Will Light-Speed Space Travel Ever Be Possible?

Battle of the Alamo from "Texas: An Epitome of Texas History from the Filibustering and Revolutionary Eras to the Independence of the Republic, 1897. Texas Revolution, Texas revolt, Texas independence, Texas history.

6 Wars of Independence

King Cobra snake in Malaysia. (reptile)

9 of the World’s Deadliest Snakes

Two chicks near an egg with a white background (poultry, chick, chickens, birds).

What Do Eggs Have to Do with Easter?

Lagrange’s four-square theorem: Facts & Related Content

Written and fact-checked by The Information Architects of Encyclopaedia Britannica

Facts

Also Known As	Lagrange’s theorem

Photos

Joseph-Louis Lagrange, engraving by Robert Hart

See All Images →

Topics

Waring’s problem number theory theorem fundamental theorem of arithmetic prime number theorem Fermat’s last theorem Chinese remainder theorem Fermat’s theorem Dirichlet’s theorem Wilson’s theorem Vinogradov’s theorem Riemann hypothesis twin prime conjecture

Quiz

Equations written on blackboard

Numbers and Mathematics