The logarithm function notably provides one from the additive group of real num- bers to the multiplicative group of positive real numbers, and an automorphism is one from a set to itself.
The Ax-Kochen this theorem relates p-adic numbers to formal power se- ries, and Dye's Theorem guarantees the existence of one of these for probability spaces. Testing whether one of these exists for any two graphs has not been proved to be either P or NP, and Skiena suggested that it is neither; one al- gorithm for  nding one of these for two   graphs is canonical labeling. The logarithm function notably provides one from the additive group of real num- bers to the multiplicative group of positive real numbers, and an automorphism is one from a set to itself. For ten points, identify this term used to describe structure-preserving bijections.
The Ax-Kochen this theorem relates p-adic numbers to formal power se- ries, and Dye's Theorem guarantees the existence of one of these for probability spaces.
isomorphism [prompt on homomorphism but do not accept or prompt on  homeomorphism ]