Results 1 
9 of
9
DEFORMATION THEORY OF REPRESENTATIONS OF PROP(ERAD)S I
"... Abstract. In this paper and its followup [MV08], we study the deformation theory of morphisms of properads and props thereby extending Quillen’s deformation theory for commutative rings to a nonlinear framework. The associated chain complex is endowed with an L∞algebra structure. Its MaurerCarta ..."
Abstract

Cited by 9 (4 self)
 Add to MetaCart
Abstract. In this paper and its followup [MV08], we study the deformation theory of morphisms of properads and props thereby extending Quillen’s deformation theory for commutative rings to a nonlinear framework. The associated chain complex is endowed with an L∞algebra structure. Its MaurerCartan elements correspond to deformed structures, which allows us to give a geometric interpretation of these results.
Homotopy Batalin–Vilkovisky algebras
"... This paper provides an explicit cofibrant resolution of the operad encoding BatalinVilkovisky algebras. Thus it defines the notion of homotopy BatalinVilkovisky algebras with the required homotopy properties. To define this resolution we extend the theory of Koszul duality to operads and properads ..."
Abstract

Cited by 6 (3 self)
 Add to MetaCart
This paper provides an explicit cofibrant resolution of the operad encoding BatalinVilkovisky algebras. Thus it defines the notion of homotopy BatalinVilkovisky algebras with the required homotopy properties. To define this resolution we extend the theory of Koszul duality to operads and properads that are defined by quadratic and linear relations. The operad encoding Batalin– Vilkovisky algebras is shown to be Koszul in this sense. This allows us to prove a PoincaréBirkhoffWitt Theorem for such an operad and to give an explicit small quasifree resolution for it. This particular resolution enables us to describe the deformation theory and homotopy theory of BValgebras and of homotopy BValgebras. We show that any topological conformal field theory carries a homotopy BValgebra structure which lifts the BValgebra structure on homology. The same result is proved for the singular chain complex of the double loop space of a topological space endowed with an action of the circle. We also prove the cyclic Deligne conjecture with this cofibrant resolution of the operad BV. We develop the general obstruction theory for algebras over the Koszul resolution of a properad and apply it to extend a conjecture of Lian–Zuckerman, showing that certain vertex algebras have an explicit homotopy BValgebra structure.
Cohomology operations and the Deligne conjecture
 Czechoslovak Math. J
"... Abstract. The aim of this note, which raises more questions than it answers, is to study natural operations acting on the cohomology of various types of algebras. It contains a lot of very surprising partial results and examples. ..."
Abstract

Cited by 5 (3 self)
 Add to MetaCart
Abstract. The aim of this note, which raises more questions than it answers, is to study natural operations acting on the cohomology of various types of algebras. It contains a lot of very surprising partial results and examples.
D.: The L∞deformation complex of diagrams of algebras
 Cambridge Studies in Advanced Mathematics
, 1994
"... Abstract. The deformation complex of an algebra over a colored PROP P is defined in terms of a minimal (or, more generally, cofibrant) model of P. It is shown that it carries the structure of an L∞algebra which induces a graded Lie bracket on cohomology. As an example, the L∞algebra structure on t ..."
Abstract

Cited by 3 (0 self)
 Add to MetaCart
Abstract. The deformation complex of an algebra over a colored PROP P is defined in terms of a minimal (or, more generally, cofibrant) model of P. It is shown that it carries the structure of an L∞algebra which induces a graded Lie bracket on cohomology. As an example, the L∞algebra structure on the deformation complex of an associative algebra morphism g is constructed. Another example is the deformation complex of a Lie algebra morphism. The last example is the diagram describing two mutually inverse morphisms of vector spaces. Its L∞deformation complex has nontrivial l0term. Explicit formulas for the L∞operations in the above examples are given. A typical deformation complex of a diagram of algebras is a fullyfledged L∞algebra with nontrivial higher operations. Contents
DEFORMATION THEORY OF REPRESENTATIONS OF PROP(ERAD)S II
"... Abstract. This paper is the followup of [MV08]. ..."
Cohomology Operators and . . .
, 2005
"... The aim of this note, which raises more questions than it answers, is to study natural operations acting on the cohomology of various types of algebras. It contains a lot of very surprising partial results and examples. ..."
Abstract
 Add to MetaCart
The aim of this note, which raises more questions than it answers, is to study natural operations acting on the cohomology of various types of algebras. It contains a lot of very surprising partial results and examples.
STRONG HOMOTOPY PROPERADS
, 2007
"... Abstract. In this paper, we define the notion of strong homotopy properads and prove that this structure transfers over left homotopy inverses. We give explicit formulae for the induced structure. 1. ..."
Abstract
 Add to MetaCart
Abstract. In this paper, we define the notion of strong homotopy properads and prove that this structure transfers over left homotopy inverses. We give explicit formulae for the induced structure. 1.
OPERAD OF FORMAL HOMOGENEOUS SPACES AND BERNOULLI NUMBERS
, 708
"... Abstract. It is shown that for any morphism, φ: g → h, of Lie algebras the vector space underlying the Lie algebra h is canonically a ghomogeneous formal manifold with the action of g being highly nonlinear and twisted by Bernoulli numbers. This fact is obtained from a study of the 2coloured opera ..."
Abstract
 Add to MetaCart
Abstract. It is shown that for any morphism, φ: g → h, of Lie algebras the vector space underlying the Lie algebra h is canonically a ghomogeneous formal manifold with the action of g being highly nonlinear and twisted by Bernoulli numbers. This fact is obtained from a study of the 2coloured operad of formal homogeneous spaces whose minimal resolution gives a new conceptual explanation of both Ziv Ran’s JacobiBernoulli complex and FiorenzaManetti’s L∞algebra structure on the mapping cone of a morphism of two Lie algebras. All these constructions are iteratively extended to the case of a morphism of arbitrary L∞algebras. 1.
THE HOMOTOPY THEORY OF STRONG HOMOTOPY ALGEBRAS AND BIALGEBRAS
, 908
"... Abstract. Lada introduced strong homotopy algebras to describe the structures on a deformation retract of an algebra in topological spaces. However, there is no satisfactory general definition of a morphism of strong homotopy (s.h.) algebras. Given a monad ⊤ on a simplicial category C, we instead sh ..."
Abstract
 Add to MetaCart
Abstract. Lada introduced strong homotopy algebras to describe the structures on a deformation retract of an algebra in topological spaces. However, there is no satisfactory general definition of a morphism of strong homotopy (s.h.) algebras. Given a monad ⊤ on a simplicial category C, we instead show how s.h. ⊤algebras over C naturally form a Segal space. Given a distributive monadcomonad pair (⊤, ⊥), the same is true for s.h. (⊤, ⊥)bialgebras over C; in particular this yields the homotopy theory of s.h. sheaves of s.h. rings. There are similar statements for quasimonads and quasicomonads. We also show how the structures arising are related to derived connections on bundles.