- #1

- 19

- 2

- Homework Statement
- Group table

- Relevant Equations
- n/a

* | s | t | u | v |

s | s? | v? | u | v? |

t | t | v | ||

u | u? | |||

v | v? |

Since s*u=u does that mean s is the identity element? Then I know there can't be repeated values in a row or column so I need to us that to somehow fill in the rest of the blank spaces?