Martin Rubey

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Name	Martin Rubey
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279

305

votes

169

answers

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Examples of common false beliefs in mathematics. [closed]

big-list mathematics-education mathematics-psychology

apr 16 at 19:41 Benjamin Steinberg 10.7k●1●14●49

132

84

votes

67

answers

23k

views

Math puzzles for dinner [closed]

big-list puzzle recreational

feb 2 11 at 11:38 klaraspina 105●1●6

30

76

votes

12

answers

10k

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Have any long-suspected irrational numbers turned out to be rational?

real-analysis soft-question nt.number-theory

aug 3 at 15:02 Andile 1

12

32

votes

3

answers

2k

views

Polynomial roots and convexity

polynomials convexity convex-geometry convex-polytopes plane-geometry

oct 5 at 16:21 Jeremy Kahn 306●1●5

15

29

votes

4

answers

2k

views

Integer-valued factorial ratios

nt.number-theory co.combinatorics binomial-coefficients hypergeometric-functions

aug 1 10 at 16:03 darij grinberg 12.6k●1●24●75

12

22

votes

1

answer

2k

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Why is proving P != NP so hard?

computational-complexity

jul 26 10 at 15:26 Greg Kuperberg 36.3k●2●117●179

12

17

votes

4

answers

2k

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Genealogy of the Lagrange inversion theorem

ho.history-overview cv.complex-variables co.combinatorics

may 23 10 at 1:47 Scott Guthery 639●3●7

16

16

votes

7

answers

2k

views

Spectral graph theory: Interpretability of eigenvalues and -vectors

graph-theory intuition

oct 27 at 0:36 unknown (google) 1

5

15

votes

4

answers

878

views

Are the q-Catalan numbers q-holonomic?

generating-functions co.combinatorics hypergeometric-functions

may 20 10 at 2:37 Wadim Zudilin 8,684●1●24●59

7

14

votes

6

answers

2k

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Do convolution and multiplication satisfy any nontrivial algebraic identities?

abstract-algebra ac.commutative-algebra fourier-analysis

jul 21 10 at 11:17 Per Vognsen 1,041●5●15

4

12

votes

1

answer

601

views

Is there a group whose cardinality counts non-intersecting paths?

co.combinatorics gr.group-theory graph-theory

sep 27 10 at 15:09 Greg Kuperberg 36.3k●2●117●179

4

11

votes

3

answers

783

views

Periodic orbits and polynomials

co.combinatorics ds.dynamical-systems finite-fields

sep 6 11 at 15:59 Pietro Majer 19.7k●1●24●69

5

10

votes

1

answer

545

views

Modular equations for quasimodular forms

nt.number-theory modular-forms quasimodular-forms differential-equations functional-equations

jul 16 10 at 2:53 Wadim Zudilin 8,684●1●24●59

3

7

votes

4

answers

485

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If the series Σ pᵃ⁽ʷ⁾·xᴵʷᴵ is rational, is Σ a(w)·xᴵʷᴵ also rational (summation over words w in a regular language)?

co.combinatorics nt.number-theory matrices polynomials

oct 20 10 at 2:52 Gjergji Zaimi 37.5k●2●72●149

4

7

votes

2

answers

706

views

Inverse map for partition transform

reference-request nt.number-theory co.combinatorics partitions

nov 16 at 19:17 Garth Payne 171●1●3