D. Vassilev

发表

Convexity of the entropy of positive solutions to the heat equation on quaternionic contact and CR manifolds

D. Vassilev, 2017 .

L p ESTIMATES AND ASYMPTOTIC BEHAVIOR FOR FINITE ENERGY SOLUTIONS OF EXTREMALS TO HARDY-SOBOLEV INEQUALITIES

D. Vassilev, 2006, math/0601662.

L p ESTIMATES AND ASYMPTOTIC BEHAVIOR FOR FINITE ENERGY SOLUTIONS OF EXTREMALS TO HARDY-SOBOLEV INEQUALITIES

D. Vassilev, 2006, math/0601662.

Bianchi type A hyper-symplectic metrics, gravitational instantons and their duality

L. Ugarte, S. Ivanov, J. Santisteban, 2011 .

Optimal decay for solutions of nonlocal semilinear equations with critical exponent in homogeneous group

N. Garofalo, D. Vassilev, Annunziata Loiudice, 2022, 2210.16893.

Extremals for the Sobolev inequality on the seven-dimensional quaternionic Heisenberg group and the quaternionic contact Yamabe problem

S. Ivanov, D. Vassilev, I. Minchev, 2007, math/0703044.

Quaternionic Heisenberg Group and Heterotic String Solutions with Non-Constant Dilaton in Dimensions 7 and 5

L. Ugarte, S. Ivanov, D. Vassilev, 2015, Communications in Mathematical Physics.

Quaternionic contact hypersurfaces in hyper-Kähler manifolds

S. Ivanov, D. Vassilev, I. Minchev, 2016, Annali di Matematica Pura ed Applicata (1923 -).

Quaternionic Kähler and Spin(7) metrics arising from quaternionic contact Einstein structures

L. Ugarte, S. Ivanov, J. Santisteban, 2012, Annali di Matematica Pura ed Applicata.

Quaternionic Contact Einstein Structures and the Quaternionic Contact Yamabe Problem

S. Ivanov, D. Vassilev, I. Minchev, 2006, math/0611658.

The quaternionic Heisenberg group and Heterotic String Solutions with non-constant dilaton in dimensions 7 and 5

L. Ugarte, S. Ivanov, D. Vassilev, 2014, 1410.4130.

The Asymptotic Distribution of Eigenvalues of Partial Differential Operators

Yu Safarov, D. Vassilev, D. Vassilev, 1996 .

Non-Kaehler heterotic string solutions with non-zero fluxes and non-constant dilaton

L. Ugarte, S. Ivanov, D. Vassilev, 2014, 1402.6107.

The Lichnerowicz and Obata first eigenvalue theorems and the Obata uniqueness result in the Yamabe problem on CR and quaternionic contact manifolds

S. Ivanov, D. Vassilev, 2015, 1504.03259.

Arithmetic Differential Operators on Z_p^r

A. Buium, D. Vassilev, J. Vassilev, 2020 .

A lower bound on the spectrum of the sublaplacian Amine Aribi

E., D. Vassilev, Barletta, 2019 .

AN OBATA-TYPE THEOREM ON A THREE-DIMENSIONAL CR MANIFOLD

S. Ivanov, D. Vassilev, 2012, Glasgow Mathematical Journal.

Solution of the qc Yamabe equation on a 3-Sasakian manifold and the quaternionic Heisenberg group

S. Ivanov, D. Vassilev, I. Minchev, 2015, Analysis & PDE.

The optimal constant in the $L^2$ Folland-Stein inequality on the quaternionic Heisenberg group

S. Ivanov, D. Vassilev, I. Minchev, 2010, 1009.2978.

EXISTENCE OF SOLUTIONS AND REGULARITY NEAR THE CHARACTERISTIC BOUNDARY FOR SUB-LAPLACIAN EQUATIONS ON CARNOT GROUPS

D. Vassilev, 2006 .

Symmetry properties of positive entire solutions of Yamabe-type equations on groups of Heisenberg type

N. Garofalo, D. Vassilev, 2001 .

Regularity near the characteristic set in the non-linear Dirichlet problem and conformal geometry of sub-Laplacians on Carnot groups

N. Garofalo, D. Vassilev, 2000 .

The non-linear Dirichlet problem and the CR Yamabe problem

N. Garofalo, D. Vassilev, 1999 .

A NECESSARY AND SUFFICIENT CONDITION FOR THE EXISTENCE OF AN

T. Maruta, M. Andreica, N. Tapus, 2012 .

Extremals for the Sobolev Inequality and the Quaternionic Contact Yamabe Problem

Stefan Ivanov, S. Ivanov, Dimiter Vassilev, 2011 .

Strong Unique Continuation Properties of Generalized Baouendi–Grushin Operators

N. Garofalo, D. Vassilev, 2007 .

Strong Unique Continuation for Generalized Baouendi-Grushin Operators

N. Garofalo, D. Vassilev, 2005 .

The Obata sphere theorems on a quaternionic contact manifold of dimension bigger than seven

S. Ivanov, D. Vassilev, A. Petkov, 2013, 1303.0409.

Overdetermined Boundary Value Problems, Quadrature Domains and Applications

A. Solynin, D. Khavinson, D. Vassilev, 2005 .

The monotonicity of an entropy like energy for the heat equation on a quaternionic contact and CR manifolds

D. Vassilev, 2016, 1608.02545.

An Obata type result for the first eigenvalue of the sub-Laplacian on a CR manifold with a divergence-free torsion

S. Ivanov, D. Vassilev, 2012, Journal of Geometry.

An Obata type result for the first eigenvalue of the sub-Laplacian on a CR manifold with a divergence-free torsion

S. Ivanov, D. Vassilev, 2012, 1203.5812.

The Sharp Lower Bound of the First Eigenvalue of the Sub-Laplacian on a Quaternionic Contact Manifold

S. Ivanov, D. Vassilev, A. Petkov, 2011, The Journal of Geometric Analysis.

The Obata First Eigenvalue Theorem on a Seven-Dimensional Quaternionic Contact Manifold

Abdel-rahman Mohamed, D. Vassilev, 2020, The Journal of Geometric Analysis.

Non-umbilical quaternionic contact hypersurfaces in hyper-K\"ahler manifolds

S. Ivanov, D. Vassilev, I. Minchev, 2014, 1609.02838.

Quaternionic contact Einstein manifolds

S. Ivanov, D. Vassilev, I. Minchev, 2013, 1306.0474.

The Sharp Lower Bound of the First Eigenvalue of the Sub-Laplacian on a Quaternionic Contact Manifold

S. Ivanov, D. Vassilev, A. Petkov, 2011 .

Quaternionic Kähler and Spin(7) metrics arising from quaternionic contact Einstein structures

L. Ugarte, S. Ivanov, J. Santisteban, 2010, 1009.2745.

Explicit Quaternionic Contact Structures and Metrics with Special Holonomy

L. Ugarte, S. Ivanov, J. Santisteban, 2009, 0903.1398.

Quaternionic contact manifolds with a closed fundamental 4‐form

S. Ivanov, D. Vassilev, 2008, 0810.3888.

Conformal quaternionic contact curvature and the local sphere theorem

S. Ivanov, D. Vassilev, 2007, 0707.1289.

Quaternionic contact hypersurfaces in hyper-Kähler manifolds

S. Ivanov, D. Vassilev, I. Minchev, 2014 .

Bianchi type A hyper-symplectic and hyper-Kähler metrics in 4D

J. Santisteban, D. Vassilev, L. C. D. Andr'es, 2011, 1102.1518.

Overdetermined problems in groups of Heisenberg type: conjectures and partial results

D. Vassilev, Nicola Garofalo, 2023, 2309.12567.

A note on the stability of local zeta functions

D. Vassilev, 2005 .

Conformal paracontact curvature and the local flatness theorem

S. Ivanov, D. Vassilev, Simeon Zamkovoy, 2007, 0707.3773.

Quaternionic Heisenberg Group and Heterotic String Solutions with Non-Constant Dilaton in Dimensions 7 and 5

L. Ugarte, S. Ivanov, D. Vassilev, 2015, Communications in Mathematical Physics.