# Finite Dissection of Polyhedra/Historical Note/Mistake

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## Source Work

2008: David Nelson: *The Penguin Dictionary of Mathematics* (4th ed.):

**dissection proof**

## Mistake

*... the German mathematician Max Dehn showed in $1901$ that there are two polyhedra of the same volume for which it is impossible to reconstruct one from the other by dissection.*

## Correction

In fact it was $1900$ in which he performed this feat.

This mistake is repeated in entry **equidecomposable**.

The date of this result is not reported in the second edition.

## Sources

- 2008: David Nelson:
*The Penguin Dictionary of Mathematics*(4th ed.) ... (previous) ... (next):**dissection proof** - 2008: David Nelson:
*The Penguin Dictionary of Mathematics*(4th ed.) ... (previous) ... (next):**equidecomposable**