scholarly journals A note on Witt groups for a Frobenius extension with involution

1981 ◽  
Vol 22 (3) ◽  
pp. 249-252 ◽  
Author(s):  
Teruo Kanzaki
Keyword(s):  
Frobenius Extension ◽  
Witt Groups

scholarly journals Push-forwards for Witt groups of schemes

2011 ◽  
pp. 437-468 ◽  
Author(s):  
Baptiste Calmès ◽  
Jens Hornbostel
Keyword(s):  
Witt Groups

scholarly journals Twisted K-theory, Real A-bundles and Grothendieck–Witt groups

2017 ◽  
Vol 221 (7) ◽  
pp. 1629-1640 ◽  
Author(s):  
Max Karoubi ◽  
Charles Weibel
Keyword(s):  
K Theory ◽  
Witt Groups

scholarly journals Witt groups of abelian categories and perverse sheaves

2019 ◽  
Vol 4 (4) ◽  
pp. 621-670
Author(s):  
Jörg Schürmann ◽  
Jonathan Woolf
Keyword(s):  
Perverse Sheaves ◽  
Abelian Categories ◽  
Witt Groups

scholarly journals Group-graded and group-bigraded rings

2015 ◽  
Vol 14 (07) ◽  
pp. 1550100 ◽  
Author(s):  
Mitsuo Hoshino ◽  
Noritsugu Kameyama ◽  
Hirotaka Koga
Keyword(s):  
Multiplicative Group ◽  
Unit Element ◽  
Ring Structure ◽  
Ring Extension ◽  
Graded Ring ◽  
Frobenius Extension

Let I be a nontrivial finite multiplicative group with the unit element e and A = ⨁x∈I Ax an I-graded ring. We construct a Frobenius extension Λ of A and study when the ring extension A of Ae can be a Frobenius extension. Also, formulating the ring structure of Λ, we introduce the notion of I-bigraded rings and show that every I-bigraded ring is isomorphic to the I-bigraded ring Λ constructed above.

scholarly journals Derived Witt groups of a scheme

1999 ◽  
Vol 141 (2) ◽  
pp. 101-129 ◽  
Author(s):  
Paul Balmer
Keyword(s):  
Witt Groups
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