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Past exam of the mathematical methods I course of the University of Oxford / 2015 resit / 7 / iv

Codex (@codex,  0) ... Physics course of the University of Oxford Year 1 of the physics course of the University of Oxford Mathematical methods I course of the University of Oxford Past exam of the mathematical methods I course of the University of Oxford 2015 resit 7
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iv
Yes, over C. The column matrix is diag(1,1+i), with nonzero determinant 1+i. Every (z1​,z2​)∈C2 has the unique expansion
(z1​,z2​)=z1​(1,0)+1+iz2​​(0,1+i).
(1)
The scalar field matters: the same space regarded as a real vector space has dimension four.

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