Diagram Chasing
This graph can be used to do interactive
diagram chasing. In this example, use the graph to the right to prove the
snake lemma.
How to Use
- Hold SHIFT and click to create an element of a module.
- Click and drag elements to map them forward.
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If an element maps to zero, you can pull it back. A new diagram
chase will be created with the kernel of the pullback.
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Hold ALT (or OPTION) and drag to shift the position of the
notation grid to improve readability.