My real name is Erik P. G. Johansson. My "professional" skills are physics, theoretical physics and mathematics (from my education).

Found Wikipedia during 2005 and was very impressed by it. Wikipedian since August 26th 2005 (created user account and first edit).

Same person as Erik J on Swedish Wikipedia.

Den här användaren talar svenska som modersmål.

This user can contribute with an advanced level of English.

Dieser Benutzer hat fortgeschrittene Deutschkenntnisse.

Some favorites (which I have neither written nor edited)