Abstract:We show the undecidability of the question of isomorphism of forms over a polynomial ring R[t 1 , . . . , tn], assuming a hypothesis about units in certain quaternion rings. Assuming this, it follows that isomorphisms of modules, and of affine algebraic varieties over R are undecidable.
“…In [11] Kim and Roush prove a conditional undecidability result for the isomorphism of forms over certain polynomial rings. This is applied to related decision problems.…”
Section: Results On Undecidability Of Isomorphism Of Forms Over Polynmentioning
“…In [11] Kim and Roush prove a conditional undecidability result for the isomorphism of forms over certain polynomial rings. This is applied to related decision problems.…”
Section: Results On Undecidability Of Isomorphism Of Forms Over Polynmentioning
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