"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!"

I am a senior lecturer in the School of Mathematical Sciences at Tel Aviv University.

Before that, I was a member in the school of Mathematics at the Institute for Advanced Study.

Even before that, I was a C.L.E Moore instructor in the department of Mathematics at MIT.

Before that, I was a member in the school of Mathematics at the Institute for Advanced Study.

Even before that, I was a C.L.E Moore instructor in the department of Mathematics at MIT.

I received my Ph.D. from Tel-Aviv University
in 2006, under the supervision of Leonid Polterovich.