# TCA Support¶

## Copiable Symbols¶

Try copying the symbol from the Unicode column. If it doesn't succeed then type the ASCII equivalent from the keyboard.

Name | Unicode | ASCII |
---|---|---|

Epsilon | ε | `e` |

Empty set | ∅ | `{}` |

Superscript plus | ⁺ | `^+` |

Superscript n |
ⁿ | `^n` |

Subset | ⊂ | `subset of` |

Element of a set | ∈ | `in` |

Not an element of a set | ∉ | `not in` |

Union of sets | ∪ | `union` or `U` |

Intersection of sets | ∩ | `intersect` |

Greek letter "phi" | ϕ | `phi` |

Greek letter "psi" | Ψ | `psi` |

Greek letter "Sigma" | Σ | `Sigma` or `E` |

## PDF forms handling¶

Use an appropriate PDF reader (e.g. Adobe Acrobat or Foxit Reader) to fill the form fields. This saves your answers, and you can submit the resulting PDF file after completing the form. Do not use your browser for this -- you may easily lose your work!

If you have a tablet that allows you to write on the PDF freehand then please avoid doing that. Please fill the form fields with plain text (typed from a keyboard).

You may, if you prefer, print the paper and work on it, but please transfer your answers to the PDF form and avoid scanning your work.