Exotic Ga-quotients of SL2 x A(1)

Affiliation auteursAffiliation ok
TitreExotic Ga-quotients of SL2 x A(1)
Type de publicationJournal Article
Year of Publication2019
AuteursDubouloz A
JournalEUROPEAN JOURNAL OF MATHEMATICS
Volume5
Pagination828-844
Date PublishedSEP
Type of ArticleArticle
ISSN2199-675X
Mots-clésAdditive group actions, Deformed Koras-Russell threefolds, Exotic spheres, Zariski Cancellation Problem
Résumé

Every deformed Koras-Russell threefold of the first kind Y = {x(n) z = y(m) - t(r) + xh( x, y, t)} in A4 is the algebraic quotient of proper Zariski locally trivial Ga-action on SL2 x A(1).

DOI10.1007/s40879-019-00355-2