Abstract
Let k be an algebraically closed field of arbitrary characteristic. Let A be an affine domain over k with transcendence degree 1 which is not isomorphic to k [ x ] , and let B be a domain over k. We show that the AK invariant distributes over the tensor product of A by B. As a consequence, we obtain a generalization of the cancellation theorem of S. Abhyankar, P. Eakin, and W. Heinzer.
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