2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/50070We study the contribution to entropy of Black Holes in D=2+1 dimensions from an extension of the Chern Simons theory including higher derivative in a curved space-time.8 pages, AMStexHigh Energy Physics - TheoryGeneral Relativity and Quantum Cosmologytext