D.S. Turaga, K. Ratakonda, et al.
SCC 2006
Using 1947 work of Post showing that the word problem for semigroups is unsolvable, we explicitly exhibit an algebraic characterization of the bits of the halting probability Ω. Our proof closely follows a 1978 formulation of Post's work by M. Davis. The proof is self-contained and not very complicated.
D.S. Turaga, K. Ratakonda, et al.
SCC 2006
Fausto Bernardini, Holly Rushmeier
Proceedings of SPIE - The International Society for Optical Engineering
Charles Micchelli
Journal of Approximation Theory
Harpreet S. Sawhney
IS&T/SPIE Electronic Imaging 1994