There are only 8 Complex Infinitesimal identities. They are.
1/infinity, -1/infinity, i/infinity, -i/infinity
(1+i)/infinity, (1-i)/infinity, (-1+i)/infinity And
(-1-i)/infinity.
0 is not an Infinitesimal, for if it were then (1/0) would equal infinity and not +/-infinity just as a limit, as it does.
(1+2 i)/infinity=(1+i)/infinity
And this fraction cannot be reduced any further.