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Chain complex
A cochain complex $\mathcal{C}$ is a collection of vector spaces ${C^k}_{k\in\mathcal{Z}}$ together with sequence of linear maps $d_k:C^k \...
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==Problem 1== Find the multiplication table for group with 3 elements and prove that it is unique. ==Solution== Clear that if \(e,a\) are t...
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==Problem 2A== Find all components of matrix \(e^{i\alpha A}\) where \(A\) is \begin{equation} A = \begin{pmatrix} 0&&0&&1...
Thanx
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