Algebraic Structures and Their Representations: XV Coloquio Latinoamericano de Algebra, Cocoyoc, Morelos, México, July 20-26, 2003 Book

	Recent results on ring constructions for error-correcting codes	1
	Algebras determined by their left and right parts	13
	The work of Roberto Martinez-Villa	49
	A survey on fat points on a smooth quadric	61
	Bautista and the development of the representation theory of Artin algebras	89
	A survey on Nichols algebras	105
	Approximations by modules of G-dimension zero	119
	Representations of matched pairs of groupoids and applications to weak Hopf algebras	127
	On symmetries of quasicrystals	175
	Frattini-type and fitting-type subgroups	189
	Representations of the quantum algebra su[subscript q](1, 1) and duality of q-orthogonal polynomials	195
	Internal bialgebroids, entwining structures and corings	207
	The A[subscript 2] Ocneanu quantum groupoid	227
	Skew Armendariz rings and annihilator ideals of skew polynomial rings	249
	Quantum symmetric algebras as braided Hopf algebras	261
	Blowup algebras of ideals of vertex covers of bipartite graphs	273
	Minimal elements in the poset of tilting modules	281
	Dynamical twists and quantization	289
	On the combinatorial rank of Hopf algebras	299
	A tensor product of projective G-groups	309
	The minimum degree of a surface that passes through all the points of a 0-dimensional scheme but a point P	315
	Primitive ideals and Jacobson radicals in Hopf Galois extensions	333
	On the algebraic decomposition of a centralizer algebra of the hyperoctahedral group	345
	Quantum group global symmetries of quantum chains : states for linear chains with left end open and right end closed	359
	One-sided Hopf algebras	377
	BTZ black hole and Jacobi inversion for fundamental domains of infinite volume	385
	Galois correspondence theorem for Hopf algebra actions	393
	One two-point differentiation and its generalization	413