A technical Conjecture which connects algebraic k-Theory to Étale cohomology. The conjecture was made more precise by Dwyer and Friedlander (1982). Thomason (1985) established the first half of this conjecture, but the entire conjecture has not yet been established.
References
Dwyer, W. and Friedlander, E. ``Étale -Theory and Arithmetic.'' Bull. Amer. Math. Soc. 6, 453-455, 1982.
Thomason, R. W. ``Algebraic -Theory and Étale Cohomology.'' Ann. Sci. École Norm. Sup. 18, 437-552, 1985.
Weibel, C. A. ``The Mathematical Enterprises of Robert Thomason.'' Bull. Amer. Math. Soc. 34, 1-13, 1996.