"She
can't do sums a bit !" the Queens said together, with great emphasis.
"Can
you do sums?" Alice said, turning suddenly to the white Queen,
for
she didn't
like being found fault with so much. The Queen gasped and shut
her
eyes. "I
can do Addition," she said, "if you give me time - but I can't do
Subtraction under any circumstances!"
Email: ostrover at tauex dot tau dot ac dot il (If
you are not a program then you know what to do....)
Yaron Ostrover
School of Mathematical Sciences
Tel Aviv University
Ramat Aviv, Tel Aviv, 69978, ISRAEL