... | Scalar | |

... | Complex conjugate of | |

... | Vector | |

... | Unity vector in direction x | |

... | Scalar inner product | |

... | Partial derivative with respect to | |

... | Nabla operator | |

... | Gradient of | |

... | Divergence of | |

... | LAPLACE operator | |

... | Matrix | |

... | Elements of the matrix | |

... | Conjugate transposed matrix: | |

... | Unity matrix | |

... | Determinant of a matrix | |

... | GREEN's function | |

... | HAMILTONian in the first quantization | |

... | HAMILTONian in the second quantization | |

... | Field operator | |

... | Annihilation operator for bosons | |

... | Annihilation operator for fermions | |

... | Creation operator for bosons | |

... | Creation operator for fermions | |

... | Statistical average | |

... | Convolution |