Results 11 to 20 of about 41 (41)
Gysin sequences and SU(2)‐symmetries of C∗‐algebras
Transactions of the London Mathematical Society, Volume 8, Issue 1, Page 440-492, December 2021., 2021 Abstract Motivated by the study of symmetries of C∗‐algebras, as well as by multivariate operator theory, we introduce the notion of an SU(2)‐equivariant subproduct system of Hilbert spaces. We analyse the resulting Toeplitz and Cuntz–Pimsner algebras and provide results about their topological invariants through Kasparov's bivariant K‐theory.
Francesca Arici, Jens Kaad
wiley +1 more source
L‐equivalence for degree five elliptic curves, elliptic fibrations and K3 surfaces
Bulletin of the London Mathematical Society, Volume 52, Issue 2, Page 395-409, April 2020., 2020 Abstract We construct non‐trivial L‐equivalence between curves of genus one and degree five, and between elliptic surfaces of multisection index five. These results give the first examples of L‐equivalence for curves (necessarily over non‐algebraically closed fields) and provide a new bit of evidence for the conjectural relationship between L ...
Evgeny Shinder, Ziyu Zhang
wiley +1 more source
On fuzzy subbundles of vector bundles
International Journal of Mathematics and Mathematical Sciences, Volume 2003, Issue 40, Page 2553-2565, 2003., 2003 This paper considers fuzzy subbundles of a vector bundle. We define the operations sum, product, tensor product, Hom, and intersection of fuzzy subbundles and in each case, we characterize the corresponding flag of vector subbundles. We then propose two alternative definitions of integrability on fuzzy subbundles of a given type and discuss their ...
V. Murali, G. Lubczonok
wiley +1 more source
Optimal bound for the number of (−1)‐curves on extremal rational surfaces
International Journal of Mathematics and Mathematical Sciences, Volume 31, Issue 2, Page 123-126, 2002., 2002 We give an optimal bound for the number of (−1)‐curves on an extremal rational surface X under the assumption that −KX is numerically effective and having self‐intersection zero. We also prove that a nonelliptic extremal rational surface has at most nine (−1)‐curves.
Mustapha Lahyane
wiley +1 more source
Categorical Torelli theorems: results and open problems. [PDF]
Rend Circ Mat Palermo, 2023 Pertusi L, Stellari P.
europepmc +1 more source
On Buchsbaum bundles on quadric hypersurfaces
Open Mathematics, 2012 Ballico Edoardo +3 more
doaj +1 more source
Design and introduction of a quality of life assessment and practice support system: perspectives from palliative care settings. [PDF]
J Patient Rep Outcomes, 2017 Sawatzky R +10 more
europepmc +1 more source
ACM bundles, quintic threefolds and counting problems
Open Mathematics, 2012 Mohan Kumar N., Rao Aroor
doaj +1 more source
Moduli of symplectic instanton vector bundles of higher rank on projective space ℙ3
Open Mathematics, 2012 Bruzzo Ugo +2 more
doaj +1 more source
Derived category of toric varieties with small Picard number
Open Mathematics, 2012 Costa Laura, Miró-Roig Rosa
doaj +1 more source