|
Search: id:A057565
|
|
|
| A057565 |
|
Number of regions of linearity for Lusztig's piecewise-linear function in type A_n. |
|
+0
1
|
| |
|
|
OFFSET
|
1,2
|
|
|
COMMENT
|
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}).
|
|
REFERENCES
|
J.W. Cockerton, "Canonical bases and piecewise-linear combinatorics", Ph.D., Warwick, 1995
|
|
CROSSREFS
|
Sequence in context: A156296 A003046 A137884 this_sequence A152804 A060595 A086619
Adjacent sequences: A057562 A057563 A057564 this_sequence A057566 A057567 A057568
|
|
KEYWORD
|
hard,nonn,nice
|
|
AUTHOR
|
R. M. Green (r.m.green(AT)lancaster.ac.uk), Oct 04 2000
|
|
|
Search completed in 0.002 seconds
|
