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Fermat's last theorem

American  
[fer-mahz] / fɛrˈmɑz /

noun

Mathematics.
  1. the unproved theorem that the equation xn + yn = zn has no solution for x, y, z nonzero integers when n is greater than 2.


Fermat's last theorem British  
/ fɜːˈmæts /

noun

  1. (in number theory) the hypothesis that the equation xn + yn = zn has no integral solutions for n greater than two

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Fermat's last theorem Scientific  
/ fĕr-mäz′ /
  1. A theorem stating that the equation a n + b n = c n has no solution if a, b, and c are positive integers and if n is an integer greater than 2. The theorem was first stated by the French mathematician Pierre de Fermat around 1630, but not proved until 1994.


Etymology

Origin of Fermat's last theorem

First recorded in 1860–65; named after P. de Fermat


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The meaning of life, the laws of general relativity, quantum mechanics, Fermat's last theorem.

From BBC ● Oct. 9, 2025

The exception came to be known as Fermat’s last theorem.

From New York Times ● Jan. 31, 2022

Or, for a more recent example, consider mathematician Andrew Wiles working in his attic for years to prove Fermat’s last theorem before finally announcing his success in 1995.

From Scientific American ● May 6, 2020

Fermat's last theorem is also connected to another deep question in number theory called the abc conjecture, Rognes points out.

From Nature ● Mar. 14, 2016

It was discovered by Pierre Fermat, the same French mathematician who came up with the famous Fermat’s last theorem.

From Slate ● Jun. 3, 2013

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