Bourbaki dangerous bend symbol: Difference between revisions
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Knuth's use of the "dangerous bend" sign. Sample image. |
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==References== |
==References== |
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[[Image:Rkinch_db.gif|thumb|left|Knuth's "Dangerous Bend" sign. |
[[Image:Rkinch_db.gif|thumb|left|Knuth's "Dangerous Bend" sign.]] |
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*[http://www.truetex.com/db.htm Knuth's use of the dangerous bend sign. Public domain GIF files.] |
*[http://www.truetex.com/db.htm Knuth's use of the dangerous bend sign. Public domain GIF files.] |
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Revision as of 23:12, 4 September 2006
The dangerous bend symbol was created by Bourbaki and appears in the margins of mathematics books written by the group. It is analogous with a street sign that indicates a "dangerous bend" in the road ahead. Bourbaki, and those who later adopted the symbol, would use it to mark passages that were tricky on a first reading or contained an especially difficult argument. For example, computer scientist Donald Knuth uses it in his textbooks.