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Łukasz Grabowski

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2228 views

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Name	Łukasz Grabowski
Member for	3 years
Seen	Jun 12 at 14:48
Website	people.maths.ox.ac.uk/grabowski
Location	Oxford, UK
Age

I'm a research associate at Oxford University

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122

235

votes

3

answers

17k

views

Polynomial bijection from QxQ to Q?

nt.number-theory open-problem

apr 29 at 16:31 unknown (yahoo) 1

93

100

votes

69

answers

27k

views

Awfully sophisticated proof for simple facts [closed]

soft-question big-list examples

may 14 at 20:03 Toink 462●1●9

18

65

votes

4

answers

4k

views

If 2^x and 3^x are integers, must x be as well?

analytic-number-theory open-problem diophantine-approximation

jul 18 10 at 15:59 M. Alaggan 61●7

55

58

votes

62

answers

17k

views

Which mathematicians have influenced you the most? [closed]

soft-question

sep 2 11 at 18:01 Victor Miller 3,395●2●14●26

23

54

votes

1

answer

3k

views

Nontrivial finite group with trivial group homologies?

gr.group-theory group-cohomology open-problem

feb 10 at 22:44 Dennis Sullivan 121●1●2

19

35

votes

7

answers

2k

views

How would one even begin to try to prove that a simple number-theoretic statement is undecidable?

peano-axioms nt.number-theory lo.logic set-theory

jun 15 10 at 4:59 Pierre-Yves Gaillard 543●2●10●16

16

30

votes

1

answer

2k

views

Infinitely many solutions of a diophantine equation

gr.group-theory nt.number-theory diophantine-equations

jul 6 at 20:58 Mark Sapir 28k●2●57●120

6

27

votes

7

answers

1k

views

Does the truth of any statement of real matrix algebra stabilize in sufficiently high dimensions?

matrices lo.logic

aug 2 10 at 21:33 Peter Shor 4,475●22●46

19

26

votes

10

answers

3k

views

Is there a mathematical axiomatization of time (other than, perhaps, entropy)?

statistical-physics geometry ho.history-overview mp.mathematical-physics soft-question

nov 28 11 at 23:07 Peter Arndt 6,918●18●42

9

24

votes

2

answers

1k

views

Invertible matrices satisfying $[x,y,y]=x$.

gr.group-theory geometric-group-theory matrices

mar 19 12 at 3:31 Mark Sapir 28k●2●57●120

12

24

votes

2

answers

1k

views

What is the current status of the Kaplansky zero-divisor conjecture for group rings?

noncommutative-algebra ra.rings-and-algebras gr.group-theory c-star-algebras group-rings

nov 2 11 at 9:30 Joerg Sixt 101●4

9

22

votes

4

answers

2k

views

Adjacency matrices of graphs

graph-theory matrices

jan 19 11 at 5:40 Tracy Hall 1,679●4●12

8

15

votes

1

answer

1k

views

Amenability of groups

gr.group-theory amenability

jun 10 at 14:02 Kate Juschenko 3,864●5●27

7

15

votes

1

answer

682

views

Analogue of Smith normal form for matrices over $\mathbb Z[t]$

ra.rings-and-algebras matrices

jan 21 11 at 23:11 Kamran Reihani 447●2●6

7

14

votes

3

answers

1k

views

Representation of vectors in $\mathbb{R}^2$ via differences of small vectors.

mg.metric-geometry linear-algebra combinatorial-geometry co.combinatorics

oct 7 10 at 15:23 André Henriques 15.3k●2●30●85