# Mathematische Annalen Journal Impact Factor & Information

## Journal description

Begründet 1868 durch Alfred Clebsch und Carl Neumann. Fortgeführt durch Felix Klein David Hilbert Otto Blumenthal Erich Hecke Heinrich Behnke Hans Grauert und Heinz Bauer.

## Current impact factor: 1.20

## Impact Factor Rankings

2015 Impact Factor | Available summer 2015 |
---|---|

2013 / 2014 Impact Factor | 1.201 |

2012 Impact Factor | 1.378 |

2011 Impact Factor | 1.297 |

2010 Impact Factor | 1.092 |

2009 Impact Factor | 1.198 |

2008 Impact Factor | 1.027 |

2007 Impact Factor | 0.877 |

2006 Impact Factor | 0.902 |

2005 Impact Factor | 0.828 |

2004 Impact Factor | 0.79 |

2003 Impact Factor | 0.954 |

2002 Impact Factor | 0.755 |

2001 Impact Factor | 0.691 |

2000 Impact Factor | 0.683 |

1999 Impact Factor | 0.596 |

1998 Impact Factor | 0.587 |

1997 Impact Factor | 0.595 |

1996 Impact Factor | 0.672 |

1995 Impact Factor | 0.749 |

1994 Impact Factor | 0.512 |

1993 Impact Factor | 0.543 |

1992 Impact Factor | 0.493 |

## Impact factor over time

## Additional details

5-year impact | 1.30 |
---|---|

Cited half-life | 0.00 |

Immediacy index | 0.49 |

Eigenfactor | 0.02 |

Article influence | 1.75 |

Website | Mathematische Annalen website |

Other titles | Mathematische Annalen |

ISSN | 0025-5831 |

OCLC | 1639684 |

Material type | Periodical, Internet resource |

Document type | Journal / Magazine / Newspaper, Internet Resource |

## Publisher details

- Pre-print
- Author can archive a pre-print version

- Post-print
- Author can archive a post-print version

- Conditions
- Author's pre-print on pre-print servers such as arXiv.org
- Author's post-print on author's personal website immediately
- Author's post-print on any open access repository after 12 months after publication
- Publisher's version/PDF cannot be used
- Published source must be acknowledged
- Must link to publisher version
- Set phrase to accompany link to published version (see policy)
- Articles in some journals can be made Open Access on payment of additional charge

- Classification green

## Publications in this journal

- [Show abstract] [Hide abstract]

**ABSTRACT:**The purpose of this paper is to prove Duflo’s conjecture for \((G,\pi ,\,AN)\) where \(G\) is a real connected simple Lie group of Hermitian type and \(\pi \) is a discrete series of \(G\) and \(AN\) is the maximal exponential solvable subgroup for an Iwasawa decomposition \(G=KAN\) . This is essentially deduced from the following general theorem which we prove in this paper: let \(G\) be a real connected semisimple Lie group with Lie algebra \({\mathfrak {g}}\) . Then a strongly elliptic \(G\) -coadjoint orbit \({\mathcal {O}}\) is holomorphic if and only if \(\text {p}({\mathcal {O}})\) is an open \(AN\) -coadjoint orbit. Here \(\text {p} : {\mathfrak {g}}^* \longrightarrow ({\mathfrak {a}}\oplus {\mathfrak {n}})^*\) is the natural projection.Mathematische Annalen 06/2015; 362(1-2). DOI:10.1007/s00208-014-1102-y - [Show abstract] [Hide abstract]

**ABSTRACT:**We consider a \(C^\infty \) boundary \(b\Omega \subset {\mathbb {C}}^n\) which is \(q\) -convex in the sense that its Levi-form has positive trace on every complex \(q\) -plane. We prove that \(b\Omega \) is tangent of infinite order to the complexification of each of its submanifolds which is complex tangential and of finite bracket type. This generalizes Diederich and Fornaess (Ann Math 107:371–384, 1978) from pseudoconvex to \(q\) -convex domains. We also readily prove that the rows of the Levi-form are \(\frac{1}{2}\) -subelliptic multipliers for the \(\bar{\partial }\) -Neumann problem on \(q\) -forms (cf. Ho in Math Ann 290:3–18, 1991). This allows to run the Kohn algorithm of Acta Math 142:79–122 (1979) in the chain of ideals of subelliptic multipliers for \(q\) -forms. If \(b\Omega \) is real analytic and the algorithm gets stuck on \(q\) -forms, then it produces a variety of holomorphic dimension \(q\) , and in fact, by our result above, a complex \(q\) -manifold which is not only tangent but indeed contained in \(b\Omega \) . Altogether, the absence of complex \(q\) -manifolds in \(b\Omega \) produces a subelliptic estimate on \(q\) -forms.Mathematische Annalen 06/2015; 362(1-2):541-550. DOI:10.1007/s00208-014-1116-5 - [Show abstract] [Hide abstract]

**ABSTRACT:**We compute the \(F\) -pure threshold of the affine cone over a Calabi-Yau hypersurface, and relate it to the order of vanishing of the Hasse invariant on the versal deformation space of the hypersurface.Mathematische Annalen 06/2015; 362(1-2):551-567. DOI:10.1007/s00208-014-1129-0 - [Show abstract] [Hide abstract]

**ABSTRACT:**In this paper we consider the topological structure of the solution set of non-autonomous parabolic evolution inclusions with time delay, defined on non-compact intervals. The result restricted to compact intervals is then extended to non-autonomous parabolic control problems with time delay. Moreover, as the applications of the information about the structure, we establish the existence result of global integral solutions for non-autonomous Cauchy problems subject to nonlocal condition, and prove the invariance of a reachability set for non-autonomous control problems under single-valued nonlinear perturbations. Finally, some illustrating examples are supplied.Mathematische Annalen 06/2015; 362(1-2):173-203. DOI:10.1007/s00208-014-1110-y - [Show abstract] [Hide abstract]

**ABSTRACT:**We study the asymptotic behavior of Veronese syzygies as representations of the general linear group. For a fixed homological degree p of the syzygies, we describe the exact asymptotic growth for the number of distinct irreducible representations and for the number of irreducible representations also counting multiplicities. This shows that asymptotically Veronese syzygies have a very rich algebraic and representation-theoretic structure as the degree of the embedding grows.Mathematische Annalen 06/2015; 362(1-2). DOI:10.1007/s00208-014-1125-4 - [Show abstract] [Hide abstract]

**ABSTRACT:**Nous montrons un théorème de semi-continuité supérieure pour l’entropie métrique des applications méromorphes. Abstract We prove a theorem of uppersemicontinuity for the metric entropy of meromorphic maps.Mathematische Annalen 06/2015; 362(1-2):1-23. DOI:10.1007/s00208-014-1101-z - [Show abstract] [Hide abstract]

**ABSTRACT:**Let \(X\) be a proper smooth algebraic variety over a field \(k\) of characteristic zero and let \(D\) be a divisor with simple normal crossings. Let \(M\) be a vector bundle over \(X-D\) equipped with a flat connection with possible irregular singularities along \(D\) . We define a cleanliness condition which roughly says that the singularities of the connection are controlled by the singularities at the generic points of \(D\) . When this condition is satisfied, we compute explicitly the associated log-characteristic cycle, and relate it to the so-called refined irregularities. As a corollary of a log-variant of Kashiwara–Dubson formula, we obtain the Euler characteristic of the de Rham cohomology of the vector bundle, under a mild technical hypothesis on \(M\) .Mathematische Annalen 06/2015; 362(1-2). DOI:10.1007/s00208-014-1118-3 - [Show abstract] [Hide abstract]

**ABSTRACT:**Minimal surfaces in a Riemannian manifold \(M^n\) are surfaces which are stationary for area: the first variation of area vanishes. In this paper, we treat two topics on branch points of minimal surfaces. In the first, we show that a minimal surface \(f:\mathbb RP^2\rightarrow M^3\) which has the smallest area, among those mappings from the projective plane which are not homotopic to a constant mapping, is an immersion. That is, \(f\) is free of branch points, including especially false branch points. As a major step toward treating minimal surfaces of the type of the projective plane, we extend the fundamental theorem of branched immersions to the nonorientable case. In the second topic, we resolve, in the negative, a question on the directions of curves of self-intersection at a true branch point, which was posed by Courant (Dirichlet’s principle, conformal mapping and minimal surfaces. Wiley, New York, 1950).Mathematische Annalen 06/2015; 362(1-2):389-400. DOI:10.1007/s00208-014-1121-8 -
##### Article: The order of higher Brauer groups

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**ABSTRACT:**Let \(X\) be a smooth projective variety of dimension \(2r\) over a finite field \(\mathbb {F}\) . We prove that for every prime \(\ell \ne \mathrm{char }(\mathbb {F})\) the order of the non-divisible quotient of the \(\ell \) -primary torsion group of the higher Brauer group \(\mathrm {Br}^r(X)(\ell )_\mathrm {nd}\) is a square number.Mathematische Annalen 06/2015; 362(1-2):43-54. DOI:10.1007/s00208-014-1105-8 - [Show abstract] [Hide abstract]

**ABSTRACT:**Let \((z,s)\in \mathbb {C}^n\times \mathbb {C}^m\) and \(\pi :\mathbb {C}^n\times \mathbb {C}^m\rightarrow \mathbb {C}^m\) be the projection on the second factor. Let \(D\) be a smooth domain in \(\mathbb {C}^{n+m}\) such that for each \(s\in \pi (D)\) , the \(n\) -dimensional slice \(D_s=D\cap \pi ^{-1}(s)=\{z:(z,s)\in {D}\}\) is a smooth bounded strongly pseudoconvex domain. By a theorem of Cheng and Yau, for each slice \(D_s\) there exists a unique complete Kähler–Einstein metric \(h_{\alpha \bar{\beta }}(z,s)\) with a negative constant Ricci curvature. We prove that if the slice dimension \(n\) is greater than or equal to \(3\) , then \(\log \det (h_{\alpha \bar{\beta }})_{1\le \alpha ,\beta \le {n}}\) is a plurisubharmonic function on \(D\) . We also prove that it is a strictly plurisubharmonic function if \(D\) is a strongly pseudoconvex domain.Mathematische Annalen 06/2015; 362(1-2):121-146. DOI:10.1007/s00208-014-1109-4 - [Show abstract] [Hide abstract]

**ABSTRACT:**It was once conjectured that if \(A\) is a uniform algebra on its maximal ideal space \(X\), and if each point of \(X\) is a peak point for \(A\), then \(A = C(X)\). This peak-point conjecture was disproved by Brian Cole in 1968. Here we establish a peak-point theorem for uniform algebras generated by real-analytic functions on real-analytic varieties, generalizing previous results of the authors and John Wermer.Mathematische Annalen 05/2015; DOI:10.1007/s00208-015-1224-x - [Show abstract] [Hide abstract]

**ABSTRACT:**We compute the local factors of the nongeneric supercuspidal representations of \({ GSp}_4\) , constructed by Piatetski-Shapiro, over a nonarchemedian local field of residue characteristic not equal to two. The results are in terms of the local factors of the irreducible representations of quaternion division algebra.Mathematische Annalen 04/2015; 361(3-4). DOI:10.1007/s00208-014-1096-5 - [Show abstract] [Hide abstract]

**ABSTRACT:**In this paper, we study the equidistribution of certain families of special subvarieties in general mixed Shimura varieties. We introduce the notion of bounded sequences of special subvarieties, and we prove that the André-Oort conjecture holds for such sequences. The proof follows the equidistribution approach used by Clozel, Ullmo, and Yafaev in the pure case. We then propose the notion of test invariant of a special subvariety, which is adapted from the lower bound formula of degrees of special subvarieties in the pure case studied by Ullmo and Yafaev, and we show that sequences of special subvarieties with bounded test invariants are bounded, hence the André-Oort conjecture holds in this case.Mathematische Annalen 03/2015; DOI:10.1007/s00208-015-1204-1 - [Show abstract] [Hide abstract]

**ABSTRACT:**We prove automorphy lifting theorems for 2-dimensional Galois representations of absolute Galois groups of totally real fields when the residual representation is of "exceptional" type. This exceptional case is when we are in characteristic 5, the residual representation has projective image PGL_2(F_5), and the fixed field of its kernel contains a primitive 5th root of unity. In this case the Taylor-Wiles patching method does not suffice and we prove our theorem by combining patching with the technique of automorphy by p-adic approximation.Mathematische Annalen 03/2015; DOI:10.1007/s00208-015-1214-z - [Show abstract] [Hide abstract]

**ABSTRACT:**We find the \(E\) -polynomials of a family of twisted character varieties \({\mathcal {M}}({\text {Sl}}_n)\) of Riemann surfaces by proving they have polynomial count, and applying a result of Katz regarding the counting functions. To count the number of \(\mathbb {F}_q\) -points of these varieties as a function of \(q,\) we invoke a formula from Frobenius. Our calculations make use of the character tables of \({\text {Sl}}_n(q),\) partially computed by Lehrer, and a result of Hanlon on the Möbius function of a fixed subposet of set-partitions. We compute the Euler characteristic of the \({\mathcal {M}}({\text {Sl}}_n)\) with these polynomials, and show they are connected.Mathematische Annalen 03/2015; DOI:10.1007/s00208-015-1183-2 - [Show abstract] [Hide abstract]

**ABSTRACT:**We show that the Kac-Moody 2-categories defined by Rouquier and by Khovanov and Lauda are the same.Mathematische Annalen 01/2015; DOI:10.1007/s00208-015-1207-y

Data provided are for informational purposes only. Although carefully collected, accuracy cannot be guaranteed. The impact factor represents a rough estimation of the journal's impact factor and does not reflect the actual current impact factor. Publisher conditions are provided by RoMEO. Differing provisions from the publisher's actual policy or licence agreement may be applicable.