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0 I have an SSD with a CRC Error. When I connect the drive to the PC, it does not appear as a drive (with associated drive letter) so I cannot run CHKDSK against it but it does appear in Disk Management. When I open Disk Management, I get the Initialise Disk window appear asking if I want to select GPT or MBR for the drive. Whichever I select fails and the drive is unuseable. It's selectable in DISKPART and I can run the clean command against it but I cannot format it or create a partition. Is there any way I can recover this drive please? ssd crc recovery share | improve this question asked Nov 22 at 16:24 Rich M

0 I am interested in $mathfrak{g}$ -invariant tensors for a simple Lie algebra $mathfrak{g}$ . That is, in tensors $kappa_{i_1dots i_n}$ such that $$ sumlimits_{s=1}^m f^rho_{nu i_s} kappa_{i_1dotshat{i_s}rho i_{s+1}dots i_m} = 0~, $$ where $f^rho_{nu i_s}$ are the structure constants of $mathfrak{g}$ . These correspond to the invariant polynomials often denoted as $mathcal{P}(mathfrak{g})^{mathfrak{g}}$ . I can only find sources (Humphreys, Tauvel-Yu etc.) that treat the completely symmetric or skew-symmetric cases. It is, e.g., known that there are $r$ symmetric, primitive invariant polynomials corresponding to the Casimirs of $mathcal{G}$ , where $mathcal{G}$ is the Lie group integrating $mathfrak{g}$ and $r$ is the Lie algebra's rank. There are also $r$ skew-symmetric primitive invariant polynomials