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A057565
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Number of regions of linearity for Lusztig's piecewise-linear function in type A_n.
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0
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OFFSET
| 1,2
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COMMENTS
| Lusztig's piecewise-linear function is of interest because it appears to be related to a description of the canonical basis of the quantized enveloping algebra U^+(sl_{n+1}).
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REFERENCES
| J. W. Cockerton, "Canonical bases and piecewise-linear combinatorics", Ph.D., Warwick, 1995
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CROSSREFS
| Sequence in context: A156296 A003046 A137884 * A152804 A188490 A060595
Adjacent sequences: A057562 A057563 A057564 * A057566 A057567 A057568
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KEYWORD
| hard,nonn,nice
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AUTHOR
| R. M. Green (r.m.green(AT)lancaster.ac.uk), Oct 04 2000
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