Librería Bonilla. Desde 1950

	Título:
	Autor:	Precio: $937.20
	Editorial:	Año: 2011
	Tema:	Edición: 1ª
	Sinopsis	ISBN: 9780821849149
	In this memoir the authors revisit Almgren's theory of Q-valued functions, which are functions taking values in the space \mathcal{A}_Q(\mathbb{R}^{n})$ of unordered $Q$-tuples of points in $\mathbb{R}^{n}$. In particular, the authors: give shorter versions of Almgren's proofs of the existence of $\mathrm{Dir}$-minimizing $Q$-valued functions, of their Hölder regularity, and of the dimension estimate of their singular set; propose an alternative, intrinsic approach to these results, not relying on Almgren's biLipschitz embedding $\xi: \mathcal{A}_Q(\mathbb{R}^{n})\to\mathbb{R}^{N(Q,n)}$; improve upon the estimate of the singular set of planar $\mathrm{D}$-minimizing functions by showing that it consists of isolated points.

Sucursal CDMX