Pablo Escobar him to surrender and cease all criminal activity in exchange for a reduced sentence and preferential treatment during his captivity. Declaring an end to a series of previous violent acts meant to pressure authorities and public opinion, Escobar surrendered to Colombian authorities in 1991. Before he gave himself up, the extradition of Colombian citizens to the United States had been prohibited by the newly approved Colombian Constitution of 1991. This act was controversial, as it was suspected that Escobar and other drug lords had influenced members of the Constituent Assembly in passing the law. Escobar was confined in what became
José F. Escobar José F. Escobar José Fernando "Chepe" Escobar (born 20 December 1954, in Manizales, Colombia) was a Colombian mathematician known for his work on differential geometry and partial differential equations. He was professor at Cornell University. He completed his mathematical undergraduate program at Universidad del Valle, Colombia. He received a scholarship that permitted him to do a master in science studies in the Institute of Pure and Applied Mathematics (IMPA) in Rio de Janeiro, Brazil. Escobar obtained his Ph.D. from the University of California, Berkeley in 1986, under the supervision of Richard Schoen. In his thesis he solved the problem known