toy theorem

A toy theorem is a simplified version of a more general theorem. For instance, by introducing some simplifying assumptionsPlanetmathPlanetmath in a theorem, one obtains a toy theorem.

Usually, a toy theorem is used to illustrate the claim of a theorem. It can also be illustrative and insightful to study proofs of a toy theorem derived from a non-trivial theorem. Toy theorems also have a great education value. After presenting a theorem (with, say, a highly non-trivial proof), one can sometimes give some assurance that the theorem really holds, by proving a toy version of the theorem.

For instance, a toy theorem of the Brouwer fixed point theoremMathworldPlanetmath is obtained by restricting the dimensionMathworldPlanetmath to one. In this case, the Brouwer fixed point theorem follows almost immediately from the intermediate value theorem (see page).

Title toy theorem
Canonical name ToyTheorem
Date of creation 2013-03-22 13:55:35
Last modified on 2013-03-22 13:55:35
Owner matte (1858)
Last modified by matte (1858)
Numerical id 7
Author matte (1858)
Entry type Definition
Classification msc 00-01