ORBIT CLOSURES IN THE WITT ALGEBRA AND ITS DUAL SPACE
2014 ◽
Vol 13
(05)
◽
pp. 1350146
◽
Keyword(s):
Working over an algebraically closed field of characteristic p > 3, we calculate the orbit closures in the Witt algebra W under the action of its automorphism group G. We also outline how the same techniques can be used to determine closures of orbits of all heights except p - 1 (in which case we only obtain a conditional statement) in the dual space W* under the induced action of G. As a corollary we prove that the algebra of invariants k[W*]G is trivial.
2009 ◽
Vol 05
(05)
◽
pp. 897-910
◽
2018 ◽
Vol 2019
(18)
◽
pp. 5811-5853
◽
Keyword(s):
2012 ◽
Vol 11
(05)
◽
pp. 1250091
◽
1979 ◽
Vol 27
(2)
◽
pp. 163-166
Keyword(s):