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This topic has appeared in the English Wikipedia rankings 1 time. It first appeared on 2026-05-01 and was most recently seen on 2026-05-01.
In linear algebra, particularly projective geometry, a semilinear map between vector spaces V and W over a field K is a function that is a linear map "up to a twist", hence semi-linear, where "twist" means "field automorphism of K". Explicitly, it is a function T : V → W that is:additive with respect to vector addition:
there exists a field automorphism θ of K such that . If such an automorphism exists and T is nonzero, it is unique, and T is called θ-semilinear.
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