img044 ..Z/n and groups
img045 ..groups
img046  consequence of LaGrange's theorem
     see, for example, this  link 
img047  cyclic group, generator
img048  example of generator
img049  example non-cyclic group
img050  will redo this transparency
img051  Euler totient function, def and examples
img052  group of reduced residues order of the group, generalization of Fermat
img053  formal way of computing inverse using totient function
img054  Fermat's little theorem and Wilsons result
img055  subgroup of a group
img056  example of subgroups
img057  example of subgroup of dihedral group

 algorithm  for the inverse of an element