Danny Ruberman's user avatar
Danny Ruberman's user avatar
Danny Ruberman's user avatar
Danny Ruberman
  • Member for 14 years, 2 months
  • Last seen this week
47 votes

Books/websites which have motivating stories of mathematicians overcoming hardships in life

36 votes

Misspelling my name on my mathematical publications

27 votes
Accepted

How can gauge theory techniques be useful to study when topological manifolds can be triangulated?

27 votes
Accepted

Is every degree 1 self-map a homotopy equivalence?

23 votes
Accepted

What can we say about the Cartesian product of a manifold with its exotic copy?

23 votes
Accepted

$S^3$ as cyclic branched cover of itself

23 votes
Accepted

Manifold embedded in $R^{n+1}$ with a submanifold that doesn't embed in $R^n$

23 votes

Books that teach other subjects, written for a mathematician

22 votes

Very particular kind of 4-manifolds. Classification

22 votes
Accepted

What is the status of the 4-dimensional Smale Conjecture?

21 votes
Accepted

Acyclic Finite Groups

20 votes
Accepted

Homology spheres and fundamental group

20 votes
Accepted

Is the normal bundle of a torus trivial?

18 votes
Accepted

Thom conjecture in CP3

18 votes
Accepted

Topological rigidity for negatively curved manifolds?

17 votes
Accepted

Handlebody decomposition of an open 4-manifold

17 votes
Accepted

Fibered example of topologically slice knots

16 votes
Accepted

Can a homology $n-1$-sphere divide $\mathbb{S}^{n}$ into non-contractible components?

15 votes
Accepted

Thorough reference on regular homotopy

15 votes
Accepted

What are Kirby diagrams of candidate exotic 4-manifolds?

15 votes
Accepted

Existence of Morse functions on simply connected manifolds

15 votes
Accepted

Is $\pi_{n-1}$ of a non-trivial connected sum of $n$-manifolds always non-zero?

15 votes

Homeomorphisms of $S^n\times S^1$

15 votes
Accepted

Characteristic class that cannot be represented by disjoint tori

14 votes

4-manifold $M$ with intersection form of Leech lattice

14 votes
Accepted

A simple and good reference on surgery theory

13 votes

Famous mathematical quotes

13 votes

formula for Eta invariant

13 votes
Accepted

Non-trivial examples of Stably diffeomorphic 4-manifolds

13 votes

Exotic smooth structure

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