PL EN


Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników
2014 | 225 | 1 | 229-242
Tytuł artykułu

A formula for topology/deformations and its significance

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The formula is
$∂e = (ad_e)b + ∑_{i=0}^{∞} (B_i)/i! (ad_e)^{i}(b-a)$,
with ∂a + 1/2 [a,a] = 0 and ∂b + 1/2 [b,b] = 0, where a, b and e in degrees -1, -1 and 0 are the free generators of a completed free graded Lie algebra L[a,b,e]. The coefficients are defined by
$x/(e^{x} - 1) = ∑_{n=0}^{∞} Bₙ/n! xⁿ$.
The theorem is that
∙ this formula for ∂ on generators extends to a derivation of square zero on L[a,b,e];
∙ the formula for ∂e is unique satisfying the first property, once given the formulae for ∂a and ∂b, along with the condition that the "flow" generated by e moves a to b in unit time.
The immediate significance of this formula is that it computes the infinity cocommutative coalgebra structure on the chains of the closed interval. It may be derived and proved using the geometrical idea of flat connections and one-parameter groups or flows of gauge transformations. The deeper significance of such general DGLAs which want to combine deformation theory and rational homotopy theory is proposed as a research problem.
Słowa kluczowe
Twórcy
  • Einstein Institute of Mathematics, Hebrew University of Jerusalem, Givat Ram, Jerusalem 91904, Israel
  • SUNY Department of Mathematics, Stony Brook, NY 11794-3651, U.S.A.
  • CUNY Graduate Center, New York, NY 10016, U.S.A.
Bibliografia
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.bwnjournal-article-doi-10_4064-fm225-1-10
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.