Deformations of a two-generator purely inseparable field of exponent 1

Callahan, Francis P.

doi:10.1090/S0002-9939-1977-0568489-2

Deformations of a two-generator purely inseparable field of exponent $1$
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Proc. Amer. Math. Soc. 62 (1977), 189-195 Request permission

Abstract:

This paper gives a discussion of the algebraic deformations of a two-generator purely inseparable field of exponent 1, this being the simplest field having noncommutative deformations. It gives a necessary condition for a 2-cocycle to be integrable and, if it is allowed to adjoin a single separable element to the groundfield, also a sufficient condition for a 2-cocycle to be integrable. The method used is to study certain skew symmetric biderivations associated with the field.

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