Found 183 Documents (Results 1–100)
On affine real cubic surfaces. (English) Zbl 07900993
The question of Arnold on classification of co-Artin subalgebras in singularity theory. (English) Zbl 07888137
Complements of hypersurfaces in projective spaces. (Complémentaires d’hypersurfaces dans les espaces projectifs.) (English. French summary) Zbl 07881510
On branched coverings of singular \((G, X)\)-manifolds. (English) Zbl 07813352
MSC:
57S20
57N16
57M10
57M12
57K35
57K20
57M30
57M50
53B30
57M60
53C50
83C75
57R45
58D17
14R20
14R05
53B05
Modified Makar-Limanov and Derksen invariants. (English) Zbl 1536.14053
Reviewer: Wenchao Zhang (Huizhou)
On locally nilpotent derivations of Danielewski domains. (English) Zbl 1541.13027
Cheltsov, Ivan (ed.) et al., Birational geometry, Kähler-Einstein metrics and degenerations. Proceedings of the conferences, Moscow, Russia, April 8–13, 2019, Shanghai, China, June 10–14, 2019, Pohang, South Korea, November 18–22, 2019. Cham: Springer. Springer Proc. Math. Stat. 409, 581-590 (2023).
Reviewer: Alexander B. Levin (Washington, D.C.)
Fibrations by affine lines on rational affine surfaces with irreducible boundaries. (English) Zbl 1539.14134
Cheltsov, Ivan (ed.) et al., Birational geometry, Kähler-Einstein metrics and degenerations. Proceedings of the conferences, Moscow, Russia, April 8–13, 2019, Shanghai, China, June 10–14, 2019, Pohang, South Korea, November 18–22, 2019. Cham: Springer. Springer Proc. Math. Stat. 409, 225-248 (2023).
Generalization of the ABC theorem on locally nilpotent derivations. (English. Russian original) Zbl 1533.13027
Sib. Math. J. 64, No. 5, 1167-1178 (2023); translation from Sib. Mat. Zh. 64, No. 5, 1009-1022 (2023).
Reviewer: Alexander B. Levin (Washington, D.C.)
Smooth \(\mathbb{Q} \)-homology planes satisfying the negativity conjecture. (English) Zbl 1529.14036
Reviewer: Alexei Kanel-Belov (Ramat-Gan)
Primary decomposition with differential operators. (English) Zbl 1524.13078
Reviewer: Alexander B. Levin (Washington, D.C.)
Real forms of some Gizatullin surfaces and Koras-Russell threefolds. (English) Zbl 1528.14069
Reviewer: Enrica Floris (Poitiers)
Smooth affine \(\mathbb{G}_m\)-surfaces with finite Picard groups and trivial units. (English) Zbl 1522.14079
Reviewer: Alok Maharana (Mohali)
A diffeomorphism invariant family of metric-affine actions for loop cosmologies. (English) Zbl 1528.83133
On the rigidity of some extensions of domains. (English) Zbl 1522.14076
Reviewer: Wenchao Zhang (Huizhou)
Effective characterization of quasi-abelian surfaces. (English) Zbl 1527.14021
Reviewer: Carlos Rito (Vila Real)
Modified Derksen invariant. arXiv:2312.08421
Preprint, arXiv:2312.08421 [math.AG] (2023).
Affine monoids of corank one. arXiv:2312.08316
Preprint, arXiv:2312.08316 [math.AG] (2023).
Rigidity of Graded Integral Domains and of their Veronese Subrings. arXiv:2308.05066
Preprint, arXiv:2308.05066 [math.AC] (2023).
Affine and Unirational unique factorial domains with unmixed gradings. arXiv:2307.05859
Preprint, arXiv:2307.05859 [math.AG] (2023).
Classification of complex algebraic curves under blow-spherical equivalence. arXiv:2302.02026
Preprint, arXiv:2302.02026 [math.AG] (2023).
Representations and geometrical properties of generalized inverses over fields. (English) Zbl 1514.15011
Bivariables and Vénéreau polynomials. (English. French summary) Zbl 1509.14117
Reviewer: Prosenjit Das (Thiruvananthapuram)
Mixed commuting varieties over nilpotent matrices. (English) Zbl 1511.16016
Reviewer: Wenchao Zhang (Huizhou)
On the characterization of Danielewski surfaces by their automorphism groups. (English) Zbl 1511.14104
Reviewer: Alexei Kanel-Belov (Ramat-Gan)
Generalizations of Samuel’s criteria for a ring to be a unique factorization domain. (English) Zbl 1491.14083
Reviewer: Milena Wrobel (Oldenburg)
Global bi-Lipschitz classification of semi-algebraic surfaces. arXiv:2212.06306
Preprint, arXiv:2212.06306 [math.DG] (2022).
\(q\)-moment measures and applications: a new approach via optimal transport. (English) Zbl 1482.49012
Isomorphisms between cylinders over Danielewski surfaces. (English) Zbl 1482.14064
Reviewer: Alexei Kanel-Belov (Ramat-Gan)
Bracket width of simple Lie algebras. (English) Zbl 1491.17017
Reviewer: Alexei Kanel-Belov (Ramat-Gan)
Classification of smooth factorial affine surfaces of Kodaira dimension zero with trivial units. (English) Zbl 1479.14076
Reviewer: Adrien Dubouloz (Dijon)
Families of blowups of the real affine plane: classification, isotopies and visualization. (English) Zbl 1461.14019
Reviewer: Hans-Peter Schröcker (Innsbruck)
A smooth complex rational affine surface with uncountably many real forms. arXiv:2105.08044
Preprint, arXiv:2105.08044 [math.AG] (2021).
Equivariant extensions of \(\mathbb{G}_a\)-torsors over punctured surfaces. (English) Zbl 1477.14094
Reviewer: Kayo Masuda (Himeji)
On the theory of Gordan-Noether on homogeneous forms with zero Hessian (Improved Version). (English) Zbl 1455.14118
Kuroda, Shigeru (ed.) et al., Polynomial rings and affine algebraic geometry. Selected papers based on the presentations at the conference, PRAAG 2018, Tokyo, Japan, February 12–16, 2018. Cham: Springer. Springer Proc. Math. Stat. 319, 73-107 (2020).
Characterizations of Gelfand rings specially clean rings and their dual rings. (English) Zbl 1448.14001
Reviewer: François Couchot (Caen)
Canonical threefold singularities with a torus action of complexity one and \(k\)-empty polytopes. (English) Zbl 1469.14007
Reviewer: Milena Wrobel (Oldenburg)
Extensions of isomorphisms of subvarieties in flexible varieties. (English) Zbl 1485.14112
Reviewer: Tuyen Truong (Syracuse)
On the rigidity of certain Pham-Brieskorn rings. (English) Zbl 1469.13052
Reviewer: Prosenjit Das (Thiruvananthapuram)
Some results on open algebraic surfaces of logarithmic Kodaira dimension zero. (English) Zbl 1505.14125
Isolated torus invariants and automorphism groups of rigid varieties. arXiv:2007.07882
Preprint, arXiv:2007.07882 [math.AG] (2020).
Open surfaces of small volume. (English) Zbl 1427.14078
Reviewer: Piotr Pokora (Kraków)
Homogeneous locally nilpotent derivations of nonfactorial trinomial algebras. (English. Russian original) Zbl 1444.13034
Math. Notes 105, No. 6, 818-830 (2019); translation from Mat. Zametki 105, No. 6, 824-838 (2019).
Exotic \({\mathbb{G}}_a\)-quotients of \(\mathrm{SL}_2\times{\mathbb{A}}^1\). (English) Zbl 1460.14137
Log surfaces of Picard rank one from four lines in the plane. (English) Zbl 1423.14233
Reviewer: Piotr Pokora (Kraków)
On accumulation points of volumes of log surfaces. (English. Russian original) Zbl 1423.14234
Izv. Math. 83, No. 4, 657-675 (2019); translation from Izv. Ross. Akad. Nauk, Ser. Mat. 83, No. 4, 5-25 (2019).
Reviewer: Piotr Pokora (Kraków)
Affine surfaces with isomorphic \(\mathbb{A}^2\)-cylinders. (English) Zbl 1436.14100
Reviewer: N. Mohan Kumar (St. Louis)
On double Danielewski surfaces and the cancellation problem. (English) Zbl 1437.14064
Reviewer: N. Mohan Kumar (St. Louis)
Integral points and orbits of endomorphisms on the projective plane. (English) Zbl 1436.11075
Reviewer: Dimitros Poulakis (Thessaloniki)
Smooth factorial affine surfaces of logarithmic Kodaira dimension zero with trivial units. arXiv:1910.03494
Preprint, arXiv:1910.03494 [math.AG] (2019).
Algebraic models of the Euclidean plane. (Modèles algébriques du plan euclidien.) (English. French summary) Zbl 1408.14195
Reviewer: Alexei Kanel-Belov (Ramat-Gan)
A vanishing result for the first twisted cohomology of affine varieties and applications to line arrangements. (English) Zbl 1402.32028
Reviewer: Piotr Pokora (Kraków)
Smooth contractible threefolds with hyperbolic \(\mathbb {G}_{m}\)-actions via polyhedral divisors. (English) Zbl 1408.14151
Reviewer: Adrien Dubouloz (Dijon)
Homogeneous quasi-translations in dimension 5. (English) Zbl 1403.14094
Reviewer: Alexei Kanel-Belov (Ramat-Gan)
Quasi-translations and singular Hessians. (English) Zbl 1396.14054
Reviewer: Yan Dan (Changsha)
New examples of cylindrical Fano fourfolds. (English) Zbl 1396.14062
Masuda, Kayo (ed.) et al., Algebraic varieties and automorphism groups. Proceedings of the workshop held at RIMS, Kyoto University, Kyoto, Japan, July 7–11, 2014. Tokyo: Mathematical Society of Japan (MSJ) (ISBN 978-4-86497-048-8/hbk). Advanced Studies in Pure Mathematics 75, 443-463 (2017).
On subadditivity of the logarithmic Kodaira dimension. (English) Zbl 1408.14196
J. Math. Soc. Japan 69, No. 4, 1565-1581 (2017); corrigendum ibid. 72, No. 4, 1181-1187 (2020).
Reviewer: Adrien Dubouloz (Dijon)
Quadratic homogeneous polynomial maps \(H\) and Keller maps \(x+H\) with \(3 \le {\rm rk} J H \le 4\). arXiv:1711.00904
Preprint, arXiv:1711.00904 [math.AC] (2017).
On the cancellation problem for algebraic tori. (Sur le problème de simplification pour les tores algébriques.) (English. French summary) Zbl 1390.14189
Reviewer: Kayo Masuda (Himeji)
Affine-ruled varieties without the Laurent cancellation property. (English) Zbl 1394.14039
Reviewer: Alexei Kanel-Belov (Ramat-Gan)
On rigidity of factorial trinomial hypersurfaces. (English) Zbl 1350.13008
Reviewer: Ivo M. Michailov (Shumen)
Affine extensions of principal additive bundles over a punctured surface. (English) Zbl 1391.14116
Reviewer: Adrien Dubouloz (Dijon)
Examples of cylindrical Fano fourfolds. (English) Zbl 1375.14206
Reviewer: Adrien Dubouloz (Dijon)
Real frontiers of fake planes. (English) Zbl 1397.14076
Additive group actions on affine \(\mathbb{T}\)-varieties of complexity one in arbitrary characteristic. (English) Zbl 1360.14147
Reviewer: N. Mohan Kumar (St. Louis)
Algorithms for curves with one place at infinity. (English) Zbl 1331.14057
Reviewer: Gema Maria Diaz Toca (Murcia)
Transitivity of automorphism groups of Gizatullin surfaces. (English) Zbl 1375.14205
Reviewer: Adrien Dubouloz (Dijon)
Factorially closed subrings of commutative rings. (English) Zbl 1318.13002
Reviewer: Hamid Kulosman (Louisville)
Complements of hyperplane sub-bundles in projective spaces bundles over \(\mathbb P^1\). (English) Zbl 1398.14051
Affine cones over Fano threefolds and additive group actions. (English) Zbl 1308.14066
Reviewer: Karol Palka (Warszawa)
Variants of the Kakeya problem over an algebraically closed field. (English) Zbl 1307.14084
Reviewer: Hans-Peter Schröcker (Innsbruck)
Symplectic invariance of uniruled affine varieties and log Kodaira dimension. (English) Zbl 1312.53107
Reviewer: David Auckly (Manhattan)
On exotic affine \(3\)-spheres. (English) Zbl 1327.14247
Reviewer: Karol Palka (Warszawa) (MR3205588)
A homology plane of general type can have at most a cyclic quotient singularity. (English) Zbl 1295.14055
Reviewer: Stéphane Lamy (Toulouse)
Affine homogeneous strictly pseudoconvex hypersurfaces of the type (1/2,0) in \(\mathbb{C}^3\). arXiv:1401.2252
Preprint, arXiv:1401.2252 [math.CV] (2014).
Classification of singular \(\mathbb Q\)-homology planes. I: Structure and singularities. (English) Zbl 1281.14048
Reviewer: Rajendra Gurjar (Mumbai)
Integral closure and operations of algebraic tori of complexity 1 in affine varieties. (Clôture intégrale et opérations de tores algébriques de complexité un dans les variétés affines.) (French. English introduction) Zbl 1286.13003
Reviewer: Dmitri A. Timashev (Moskva)
Newtonian and affine classifications of irreducible cubics. (English. Russian original) Zbl 1308.51022
St. Petersbg. Math. J. 24, No. 5, 759-781 (2013); translation from Algebra Anal. 24, No. 5, 94-123 (2012).
Reviewer: Alex Degtyarev (Ankara)
Singular \(\mathbb{Q}\)-homology planes of negative Kodaira dimension have smooth locus of non-general type. (English) Zbl 1287.14031
Reviewer: Rajendra Gurjar (Mumbai)
Cyclic Automorphisms groups of genus 10 non-hyperelliptic curves. arXiv:1307.1254
Preprint, arXiv:1307.1254 [math.AG] (2013).
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