"diffy Q" vs. "D.E." for "Differential Equations"

[Gerald Cohen]

        A retired professor of Mathematics at my campus tells me he is
familiar with the colloquial  "Diffy Q" (for "Differential Equations") only
from our campus (University of Missouri-Rolla).  Elsewhere he has heard the
reference only as "D.E."
He has been retired for ten years.

        I told him I would ask ADS-L about this.  Can anyone help?  Is
anyone familiar with "Diffy Q" at other universities?

-----Gerald Cohen



gcohen at umr.edu