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This tag is used if a reference is needed in a paper or textbook on a specific result.

93 votes
0 answers
17k views

Hironaka's proof of resolution of singularities in positive characteristics

Recent publication of Hironaka seems to provoke extended discussions, like Atiyah's proof of almost complex structure of $S^6$ earlier... Unlike Atiyah's paper, Hironaka's paper does not have a histor …
Henry.L's user avatar
  • 8,071
48 votes
2 answers
14k views

Research situation in the field of Information Geometry

I am now doing an article survey on the field of information geometry started by S.Amari and Barndorff-Nielson. I want to know some research situation in this field. I have read (4) and parts of (3). …
Henry.L's user avatar
  • 8,071
32 votes
3 answers
12k views

What is the Katz-Sarnak philosophy?

It has been recently mentioned by a speaker (his talk is completely not relevant to random matrix theory/RMT though) that modern statistics, especially random matrices theory, will help solving some n …
Henry.L's user avatar
  • 8,071
27 votes
4 answers
13k views

Hamiltonian, Lagrangian and Newton formalism of mechanics

If my thinking is wrong please let me know. I have little knowledge on beyond-college physics. For research purposes, I read a few introductions to these three formalisms of classical mechanics [1,2, …
Henry.L's user avatar
  • 8,071
18 votes
0 answers
572 views

What is the geometric intuition behind Wilf-Zeilberger theory?

This problem is somehow inspired by a bunch of impressive posts of combinatorial identities by T. Amdeberhan. Earlier this month I learnt from computer scientists that they have a generic algorithmic …
Henry.L's user avatar
  • 8,071
18 votes

Manifold of probability measures: connections between two types of metrics

In response to the critical comments below I revised my answer. Hope this is more helpful! (1) Two kinds of metrics are defined on generally different spaces. It is not fair to compare these two met …
Henry.L's user avatar
  • 8,071
14 votes
1 answer
3k views

How is the "conformal prediction" conformal?

The question is clarified by Prof.V.Vovk. See his answer below for discussion. Recently, early works of Gammerman, Vanpnik and Vovk[4] are rediscovered by Wasserman et.al[1] and proposed it as a promi …
Henry.L's user avatar
  • 8,071
11 votes
1 answer
440 views

Example of Banach spaces with non-unique uniform structures

While it is known that compact Hausdorff spaces admit unique uniform structures, it is further shown by Johson and Lindenstrauss's result that Banach spaces are characterized by their uniform structur …
Henry.L's user avatar
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9 votes
Accepted

What are some of the surprising results of finite sample statistical estimation?

First of all I have to express my opinion that the gap between large sample behavior and the finite sample behavior should be considered "unsurprising". Basically speaking, the theory of asymptotics …
Henry.L's user avatar
  • 8,071
9 votes

Why is free probability a generalization of probability theory?

First of all, you are mixing many questions into one post... It depends on what do you mean by "generalization". And I am not sure what you mean by talking about "commutative" without mentioning noti …
Henry.L's user avatar
  • 8,071
9 votes
1 answer
2k views

When will the supporting hyperplane of a convex set coincide with the tangent?

Due to the supporting hyperplane theorem, a convex set $C$ in a separable topological space has supporting hyperplance at each of its boundary points. The theorem only guarantees its existence, now I …
Henry.L's user avatar
  • 8,071
9 votes
1 answer
936 views

A necessary condition for differential entropy to be finite

An ensemble corresponding to a probability distribution usually has finite free energy so it is not a great loss of generality to assume that the ensemble also has finite energy in following discussio …
Henry.L's user avatar
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9 votes
Accepted

References for reasoning about the spectrum of a convex body?

A very direct result giving characteristic function control for uniform measures on compact convex sets and hence spectrum is [Kulikova& Prokhorov]. It sounds to me that all you want to study is th …
Henry.L's user avatar
  • 8,071
7 votes
0 answers
270 views

Relations between Betti numbers for clique complex

Given a clique complex $K$ constructed from a discrete set of vertices (i.e. its faces are isomorphic to the set of cliques in the 1-skeleton of $K$.), it seems that the Betti numbers $\beta_k$ define …
Henry.L's user avatar
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7 votes
Accepted

Geometric characterization of martingales

I do not think Hsu's book is a good place to start with, although it has some strong holds-like details in calculation, neither its depth nor its clarity is comparable to Stroock, Daniel W. An in …
Henry.L's user avatar
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