Good Fibrations

If you're asked to find the logarithm of a complex number, just do it! You should learn SageMath too :]

Welcome to op hell :)

• The op functor goes from Cat to Cat.
• The op functor on Delta swaps the arrows width-wise and reverses the ordering.
• The dual of the Grothendieck is not obtained by using C op, you have to also compose with the op functor.
• There are three ways to op a 2-category:
  1. Reverse the 1-cells but not the 2-cells.
  2. Reverse the 2-cells but not the 1-cells.
  3. Reverse both.