def METHOD_NAME(self):
    NC = self.number_of_cells()
    NEC = self.NEC
    edge2cell = self.edge2cell
    cell2edgeSign = torch.zeros((NC, NEC), dtype=torch.bool, device=self.device)
    cell2edgeSign[edge2cell[:, 0], edge2cell[:, 2]] = True
    return cell2edgeSign