Symplectic tensor invariants, wave graphs and S-tris 

Aleksandrs Mihailovs
Department of Mathematics
University of Pennsylvania
Philadelphia, PA 19104-6395
http://www.math.upenn.edu/~mihailov/

The spaces of invariants of tensor powers of the defining representation of 
Sp(2n) are provided with the bases parametrized by symplectic wave graphs 
introduced here especially for this purpose. The proof utilizes a game similar 
to Tetris,  named here S-tris. This work continues my previous work  
on the tensor invariants of SL(n), wave graphs and L-tris.

Preprint (March 23, 1998)