User:Calvinballing
I'm a person.
en
This user is a
native speaker
of the
English language
.
es
-2
Este usuario puede contribuir con un nivel
intermedio
de
español
.
This user has been on Wikipedia for
18 years, 3 months and 30 days
.
e
i
π
{\displaystyle e^{i\pi \ }}
This user is a
mathematician
.
This user is proud to be a
Wikipedian
.
This user remembers using
a
rotary dial
telephone.
