Research output: Contribution to journal › Article › peer-review
The special linear version of the projective bundle theorem. / Ananyevskiy, A.
In: Compositio Mathematica, Vol. 151, No. 3, 2015, p. 461-501.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - The special linear version of the projective bundle theorem
AU - Ananyevskiy, A.
PY - 2015
Y1 - 2015
N2 - © The Author 2014. A special linear Grassmann variety SGr(k, n) is the complement to the zero section of the determinant of the tautological vector bundle over Gr(k, n). For an SL-oriented representable ring cohomology theory A∗(-) with invertible stable Hopf map η, including Witt groups and MSLη∗,∗, we have A∗(SGr(2, 2n + 1)) ≅ A∗(pt)[e]/(e2n), and A∗(SGr(k, n)) is a truncated polynomial algebra over A∗(pt) whenever k(n - k) is even. A splitting principle for such theories is established. Using the computations for the special linear Grassmann varieties, we obtain a description of A∗(BSLn) in terms of homogeneous power series in certain characteristic classes of tautological bundles.
AB - © The Author 2014. A special linear Grassmann variety SGr(k, n) is the complement to the zero section of the determinant of the tautological vector bundle over Gr(k, n). For an SL-oriented representable ring cohomology theory A∗(-) with invertible stable Hopf map η, including Witt groups and MSLη∗,∗, we have A∗(SGr(2, 2n + 1)) ≅ A∗(pt)[e]/(e2n), and A∗(SGr(k, n)) is a truncated polynomial algebra over A∗(pt) whenever k(n - k) is even. A splitting principle for such theories is established. Using the computations for the special linear Grassmann varieties, we obtain a description of A∗(BSLn) in terms of homogeneous power series in certain characteristic classes of tautological bundles.
U2 - 10.1112/S0010437X14007702
DO - 10.1112/S0010437X14007702
M3 - Article
VL - 151
SP - 461
EP - 501
JO - Compositio Mathematica
JF - Compositio Mathematica
SN - 0010-437X
IS - 3
ER -
ID: 3992689