COROLLARY THEOREMS site was first opened in
February 2004, in order to present the
books written by O G POPA. Between
2005-2009 we worked from
Surrey, British Columbia, Canada. We sold our books in this site,
though also
via Amazon.com, Barnes&Noble, Alibris, Abe Books etc.
In 2009 we moved our business from
Canada to Bucharest (in Romania-EU), due
to some objective&subjective motivations. Regardless, our intention is to continue serving our clients
from Romania-EU, exactly as we did from Canada-NAFTA—hopefully, even
better!

In this respect, we have registered in Romania-EU a new
Publishing House, named COMPLEMENT CONTROL, to take control over this
site, and over the books we publish. However, only the name was changed,
not the people, not our goals, and certainly not our obligations towards
the readers.
Please rest assured that we shall continue serving our clients to the
best we can, without making ANY kind of whatever distinctions. Thank you very much, Ladies
and Gentleman!