187 reputation
7
bio website lara.epfl.ch/~psuter
location Lausanne, Switzerland
age 30
visits member for 3 years, 10 months
seen Oct 7 at 17:05

I'm a PhD student at EPFL (École Polytechnique Fédérale de Lausanne, sometimes also referred to as Swiss Federal Institute of Technology).


Jul
29
awarded  Nice Question
Jun
21
comment Resource allocation with minimal differences
Thank you for the answer. I suspected this might be an issue, hence the subquestion with the additional constraint. Any idea on a general construction in that case?
Jun
18
revised Resource allocation with minimal differences
edited tags
Jun
17
asked Resource allocation with minimal differences
Apr
5
comment Cartesian products represented as disjoint unions
Thanks for your answer. It got me thinking a little more, and I wonder now if I cannot get to $k{\cdot}n$, by representing $S$ as $((S_1 \setminus \{ s^1 \}) \times \ldots \times S_k) \cup (\{ s^1 \} \times \ldots \times S_k)$, then splitting $S_2$ in that second member, etc. In fact, I now suspect this could work for $S \setminus X$, where $X$ is an arbitrary Cartesian product from subsets of $S_1, \ldots, S_k$... Maybe someone can work a full answer, or I'll try myself.
Apr
4
asked Cartesian products represented as disjoint unions
Oct
3
comment Simplify a factorial
@LuigiPlinge OK.. My colleague's whiteboard has the same sequence written all over it, complete with lots of little hand-drawn trees, that's why I was asking :) Also, for such things the On-Line Encyclopedia of Integer Sequences is a great resource.
Oct
2
comment Simplify a factorial
Were you computing the possible arrangements of a commutative, non-associative, operator over n terms, by any chance?
Sep
26
comment Multiplications by unimodular matrices
Simple as that. Thanks.
Sep
26
accepted Multiplications by unimodular matrices
Sep
26
asked Multiplications by unimodular matrices
Sep
8
revised How many $n\times m$ binary matrices are there, up to row and column permutations?
deleted 19 characters in body
Sep
8
awarded  Citizen Patrol
Feb
21
awarded  Editor
Feb
21
revised Examples of apparent patterns that eventually fail
formatting
Feb
21
suggested approved edit on Examples of apparent patterns that eventually fail
Sep
18
awarded  Autobiographer
Feb
16
awarded  Scholar
Feb
16
awarded  Supporter
Feb
16
accepted How many $n\times m$ binary matrices are there, up to row and column permutations?