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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

User: Richard M. Green

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A057565 Number of regions of linearity for Lusztig's piecewise-linear function in type A_n.

Original entry on oeis.org

1, 2, 10, 144, 6608
Offset: 1

Author

Richard M. Green, Oct 04 2000

Keywords

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}).

References

  • J. W. Cockerton, "Canonical bases and piecewise-linear combinatorics", Ph.D., Warwick, 1995