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# Technical errors

• Errors due to k-point sampling. This will be discussed in Number of k points and method for smearing. Mind that the errors due to the k-point mesh are not transferable i.e. a ${\displaystyle 9\times 9\times 9}$ k-points grid leads to a completely different error for fcc, bcc and sc. It is therefore absolutely essential to be very careful with respect to the k-point sampling.